Author: Editorial Team

Last updated: October 2026

Most water heater repairs cost between $228 and $1,017, with a national average of about $616, according to Angi and HomeAdvisor project data. Simple fixes like relighting a pilot or replacing a thermocouple often cost $90 to $200, while a gas control valve or tankless circuit board can run $350 to $900. If the tank itself is leaking, it can’t be repaired, and replacement typically costs $880 to $1,800 or more.

Water heater repair cost at a glance

Ranges combine national cost data from Angi, HomeAdvisor, Fixr and HomeServe. Prices are higher in large coastal metros: Angi’s 2026 city data shows typical repairs of $250 to $1,200 in New York City and $300 to $1,200 in San Francisco, versus $200 to $850 in cities like Memphis and Indianapolis.

What drives water heater repair costs

• Labor rate. Plumbers typically charge $45 to $200 an hour depending on region and experience; most water heater repairs take 1 to 3 hours.
• Service call or trip fee. Many companies charge $50 to $150 just to show up and diagnose. Some waive it if you go ahead with the repair.
• Fuel type. Gas repairs (valves, burners, venting) generally cost more than electric repairs. HomeAdvisor puts typical gas repairs at $150 to $500.
• Tank vs tankless. Tankless parts and diagnostics cost more, and some brands require factory-trained technicians.
• Timing. Evening, weekend and holiday calls can cost 1.5 to 3 times the standard rate.
• Access. Heaters in tight closets, attics or crawl spaces take longer to work on.
• Permits. Gas valve and venting work may require a permit in some jurisdictions, typically $50 to $150.

Electric water heater repair costs

Heating element: $200 – $300

Electric tanks have one or two elements (upper and lower). A burned-out element is the most common reason for lukewarm water or running out fast. The part itself costs about $15 to $60, but replacement requires draining the tank and testing with a multimeter. Angi and HomeAdvisor put professional replacement at $200 to $300; Fixr’s range runs up to $750 for more involved jobs. Sediment buildup is the usual culprit, so ask the plumber to flush the tank at the same visit.

Thermostat: $150 – $250

A faulty upper or lower thermostat can cause no hot water, scalding hot water, or a tripping high-limit reset button. The part is often around $20, but diagnosis takes time. Expect $150 to $250 with a pro; HomeServe reports a national average of about $242.

Tripped breaker or reset button: $0 – $150

Check your electrical panel and the red reset button behind the upper access panel before calling anyone. If the reset trips repeatedly, there’s an underlying fault (often a shorted element or failed thermostat) and you’ll need a repair.

Gas water heater repair costs

Pilot light and igniter: $50 – $350

If the pilot keeps going out, the problem is often a dirty pilot orifice, a draft, or a failing thermocouple. A service call to diagnose and relight typically costs $50 to $150. Fixr puts full pilot assembly replacement at about $75 to $175. Power-vent and electronic-ignition tanks use a hot surface igniter instead; the part alone can cost over $100 (for example, an A.O. Smith hot surface igniter lists around $120 at SupplyHouse), so installed costs of $150 to $350 are typical.

Thermocouple: $150 – $325

The thermocouple tells the gas valve the pilot is lit. When it fails, the pilot won’t stay lit. The part is cheap, but Angi and HomeAdvisor put professional replacement at about $150, and Fixr reports $150 to $325. Some newer tanks use a sealed combustion chamber with a thermopile or flame sensor assembly that costs more.

Gas control valve: $150 – $500

The gas control valve (with the temperature dial on the front of the tank) regulates gas to the burner. Signs of failure include no ignition, flashing status lights, or water that won’t reach temperature. The part costs about $70 to $200; installed cost averages around $350, with HomeServe reporting a $495 national average. On an older tank, Angi and HomeAdvisor note that replacing the whole heater is often more cost-effective than replacing this part.

Burner, flue and venting: $100 – $350+

Rust flakes, soot or a yellow flame point to burner or venting problems. Angi puts flue vent pipe repairs at $100 to $350, and a gas burner part at about $175. Any sign of backdrafting, scorch marks around the top of the heater, or a carbon monoxide alarm is an emergency: shut off the gas and call a pro.

Tank component repair costs (gas and electric)

Anode rod: $50 – $300

The anode rod is a sacrificial metal rod that corrodes so your tank doesn’t. Most need replacing every 3 to 5 years, sooner with softened water. A rotten-egg smell from hot water is a common sign the rod needs attention (often swapped for an aluminum-zinc or powered anode). The rod costs $20 to $75; installed prices range from about $50 to $150 (HomeAdvisor) to $125 to $300 (Fixr), depending on how seized the old rod is and whether you have overhead clearance.

Temperature and pressure (T&P) relief valve: $75 – $275

The T&P valve is a safety device that opens if tank temperature or pressure gets too high. A valve that drips or discharges constantly needs replacing, and so does the cause (high house pressure, thermal expansion, or an overheating thermostat). The valve costs about $20; installed cost is up to around $200 per Angi, with HomeServe reporting a $271 average. Never cap or plug a leaking T&P valve.

Dip tube: $100 – $250

The dip tube carries cold water to the bottom of the tank. If it cracks or disintegrates, cold water mixes with hot at the top, so you get lukewarm water quickly, and plastic bits may clog faucet aerators. The part is about $25; professional replacement averages about $150 per Angi, with Fixr reporting $100 to $250.

Drain valve: $100 – $250

Plastic drain valves often crack or won’t seal after flushing. Fixr puts replacement at $100 to $200; HomeServe reports a $248 average. Many plumbers swap a plastic valve for a full-port brass one, which makes future flushing easier.

Expansion tank: $100 – $400

Homes with a check valve, backflow preventer or pressure-reducing valve have a “closed” plumbing system. When water heats, it expands and has nowhere to go, which raises pressure and can make the T&P valve drip. A thermal expansion tank absorbs that pressure. Angi puts installation at $100 to $400, and many local codes require one in closed systems.

Sediment flush: $100 – $200

Popping or rumbling noises usually mean sediment on the tank bottom. A professional flush costs about $110 to $200 according to Angi. You can do it yourself with our guide on how to flush a water heater.

Leaking tank: replacement required

Leaks from fittings, valves or pipe connections can usually be repaired. A leak from the tank body itself (water seeping from the bottom or under the jacket) means the steel tank has corroded through and must be replaced. Angi puts that at $850 to $1,800. Read our water heater leaking guide to find the source and limit damage, then see our water heater replacement cost guide.

Tankless water heater repair costs

HomeAdvisor puts the average tankless repair at about $600, with most jobs between $75 and $1,300 and complex repairs up to about $1,950. Tankless units have more electronics than tanks, so diagnosis matters.

Descaling and vent costs are from HomeAdvisor; flow sensor, igniter and board ranges are from plumbing contractor pricing and vary by brand. Heat exchangers typically carry the longest warranty on a tankless unit, so check coverage before paying for one.

Common tankless error codes

Error codes vary by brand, so always check your owner’s manual. Some widely seen examples:

• Rinnai 11: no ignition (gas supply, igniter or venting). Rinnai 12: flame failure. Rinnai 10: air supply or exhaust blockage. Rinnai LC: scale buildup, so the unit needs descaling.
• Navien E003: ignition failure. Navien E012: flame loss.

Before calling a plumber for an ignition code, check that the gas supply valve is open, other gas appliances work, and the vent termination outside isn’t blocked by snow, leaves or a nest. Scale codes are the most preventable: annual descaling usually costs less than one repair visit.

Tankless pricing and conversion costs are covered in our tankless water heater cost guide.

Service call fees, emergency and after-hours rates

Hourly ranges are from Angi’s emergency plumber data, which says emergency rates typically run 1.5 to 3 times normal rates. Fixr estimates emergency water heater repairs add about $100 to $200 to the job.

Can it wait until morning? If the tank is leaking, shut off the cold water supply valve on top of the heater and turn off power (breaker) or set the gas valve to “pilot” or “off,” then drain the tank if needed. Without active leaking or a gas smell, no hot water overnight usually isn’t an emergency, and waiting for standard hours can save $150 to $300 or more. A gas smell is always an emergency: leave the home and call your gas utility.

Repair or replace? The rules of thumb

A $200 repair on a 3-year-old heater is an easy yes. A $450 gas valve on a 12-year-old tank usually isn’t. Use these checks together:

1. Age vs typical lifespan

DOE estimates storage tank heaters last about 10 to 15 years and tankless units more than 20 years. Many gas tanks fail closer to 8 to 12 years, especially with hard water. You can often estimate age from the serial number: on many brands the first four digits encode the month and year of manufacture, but formats vary by manufacturer. See our water heater lifespan guide.

2. The 50% rule

If a repair costs more than half the price of a new installed heater, replacement usually makes more sense, especially past the halfway point of the heater’s lifespan.

3. The age × repair cost rule

Borrowed from HVAC, this rule of thumb multiplies the heater’s age in years by the repair quote. If the result is more than the cost of a new installed water heater, replace; if it’s less, repair.

Examples are illustrative. Because tankless units last 20+ years, a mid-life repair on a well-maintained tankless can still be worth it even when this rule says replace. Treat it as a starting point, not a hard cutoff.

4. Signs replacement is the better call

• Water leaking from the tank body or rust-colored water from the hot side only
• Second significant repair within a year or two
• Heater is undersized for your household (see what size water heater do I need)
• Rising energy bills from an old, inefficient unit
• You want to switch to a more efficient type; compare options in tankless vs tank water heater or heat pump water heater cost

For replacement budgets, see 50-gallon water heater replacement cost, gas vs electric replacement cost and installation labor cost.

Water heater warranties: what’s actually covered

Most manufacturer warranties require registration, often within 30 to 60 days of installation, and many exclude damage from improper installation, unapproved parts, or units installed by someone other than a licensed professional. Rheem’s standard warranties, for example, cover tank and parts for 6 to 12 years depending on series but not labor. Before paying for any repair, find the model and serial number on the rating label and check coverage with the manufacturer; a “covered” part can still mean $100 to $300 in labor and trip fees.

How to keep repair costs down

• Flush tanks yearly to slow sediment buildup that burns out elements and causes noise.
• Descale tankless units annually, or every six months in very hard water.
• Check the anode rod every 3 to 5 years; replacing it is far cheaper than a new tank.
• Test the T&P valve once a year by lifting the lever briefly (water will be hot).
• Keep the thermostat around 120°F to reduce scale, stress on the tank and scald risk.
• Install an expansion tank if you have a closed system and a dripping relief valve.
• Get two quotes for anything over $400, and ask for parts and labor to be listed separately.

FAQs

How much does it cost to fix a water heater?

Most water heater repairs cost $228 to $1,017, with a national average around $616 according to Angi and HomeAdvisor. Minor fixes like a pilot relight or thermocouple can cost $90 to $200, while major repairs such as a gas valve or tankless control board run $350 to $900.

Is it worth repairing a 10-year-old water heater?

Small, inexpensive repairs like a thermocouple, element or T&P valve can be worth doing on a 10-year-old tank. For bigger repairs such as a gas control valve, or any leak from the tank itself, replacement usually makes more sense because storage tanks typically last about 10 to 15 years.

How much does a plumber charge to replace a heating element?

Expect about $200 to $300 for professional heating element replacement on an electric water heater, including draining and refilling the tank. The element itself costs roughly $15 to $60.

How much does it cost to replace a thermocouple on a water heater?

Professional thermocouple replacement typically costs about $150, with a range up to about $325 depending on access and whether the heater has a sealed combustion chamber.

How much does it cost to replace a gas valve on a water heater?

Gas control valve replacement averages about $350, with typical ranges of $150 to $500. On an older tank, the cost often justifies replacing the whole heater instead.

Why is my water heater not getting hot?

For electric heaters, the usual causes are a tripped breaker, a tripped high-limit reset, a burned-out element, or a failed thermostat. For gas heaters, check that the pilot is lit and the gas valve is on; a pilot that won’t stay lit often means a failed thermocouple. A broken dip tube can also cause lukewarm water on either type.

How much does it cost to repair a tankless water heater?

HomeAdvisor puts the average tankless repair at about $600, with most between $75 and $1,300. Descaling costs $150 to $300, while flow sensor, igniter or control board replacements commonly run $350 to $900.

Does a water heater warranty cover labor?

Usually not for long. Manufacturer warranties often cover the tank and parts for 6 to 12 years but labor for only 1 year or not at all. Installer workmanship warranties or extended plans may add labor coverage.

Can a leaking water heater be repaired?

It depends on where the leak is. Leaks from the T&P valve, drain valve or pipe connections can usually be repaired for $100 to $300. A leak from the tank body means the tank has corroded through and must be replaced.

Is a water heater repair an emergency?

A gas smell, an active leak you can’t stop, or signs of carbon monoxide are emergencies. No hot water on its own usually isn’t, and waiting for normal business hours can avoid emergency rates that run 1.5 to 3 times standard pricing.

Last updated: October 2026

Replacing a standard 50-gallon water heater typically costs $800 to $2,800 installed, with electric models usually landing around $800 to $2,200 and gas models around $1,000 to $2,800. A 40-gallon replacement costs a little less, typically $700 to $2,300, while upgrading to a 50-gallon heat pump (hybrid) model usually runs $2,500 to $4,500 or more.

The 40- and 50-gallon sizes are the most common in American homes, so they’re also the most competitively priced. Below you’ll find cost tables for every common tank size from 30 to 80 gallons, gas vs electric, along with the add-ons that turn a $1,200 job into a $2,500 one.

50-gallon water heater replacement cost at a glance

Figures are compiled from Fixr (50-gallon installed $700–$2,500 and 40-gallon by fuel type, updated January 2026), HomeAdvisor (50-gallon $800–$2,500; 40-gallon $800–$2,300), Sears Home Services (50-gallon electric $500–$2,500, gas $1,100–$4,000, updated December 2025), NerdWallet (50-gallon unit $530–$2,900) and Inch Calculator. The Sears gas high end reflects jobs with venting or gas line work; most straightforward gas swaps fall below $2,800.

Water heater replacement cost by tank size: gas vs electric

This table shows typical installed prices for a like-for-like replacement of a standard-efficiency tank, including the unit, labor, basic materials and haul-away. It does not include major upgrades like new venting, gas lines or electrical service.

Sources: Fixr size and fuel ranges (30, 40, 50, 75, 80 gallons), HomeAdvisor size ranges, Sears Home Services 50-gallon fuel ranges, Angi and HomeServe heat pump unit prices plus typical labor. 30-, 65- and 80-gallon fuel splits are our estimates based on these sources. *Federal efficiency standards require most electric tanks over 55 gallons to use heat pump technology, with limited exceptions such as grid-enabled models, so standard electric 75- and 80-gallon tanks are less common and selection is limited.

Why 65- and 80-gallon tanks cost more than you’d expect

Since 2015, federal efficiency standards have required electric storage water heaters above 55 gallons to meet much higher efficiency levels that, in practice, mean heat pump technology for most models. Large gas tanks above 55 gallons face similarly strict rules that push them toward condensing designs. As a result, moving from 50 to 65 or 80 gallons isn’t just a matter of a slightly bigger tank: it often means a different, pricier class of heater. Before upsizing, make sure you actually need the extra capacity. Our guide on what size water heater you need explains how to size by first-hour rating.

50-gallon water heater cost breakdown

Unit cost by fuel type

Sources: Sears Home Services (unit and installation by type), Fixr (power venting $300–$1,000) and HomeAdvisor (power-vent system $600–$1,100 more, including electrical).

Cost by brand (50-gallon tank, unit only)

Source: Inch Calculator in-store pricing ranges, before tax and installation. Prices vary by model, warranty length and retailer.

Retail brands sold at big-box stores and contractor brands sold through plumbing supply houses are often built to similar standards. The bigger differences tend to be warranty length (6, 9 or 12 years), anode rod quality and the availability of local service.

Labor cost

Labor for a standard tank replacement typically runs $150 to $450 for a quick swap (HomeAdvisor) and up to $1,150 for more involved jobs (Fixr). Labor is often 20% to 50% of the total project price.

• Plumber rates: $45 to $200 per hour.
• Time on site: about 2 to 4 hours for a like-for-like replacement.
• Many plumbers quote a flat rate that includes the heater, connectors, haul-away and permit.

See our full guide to water heater installation labor cost for more detail on how plumbers price the job.

Extra costs to expect

These line items show up on many quotes, especially when the old heater was installed before current codes:

Sources: HomeAdvisor (expansion tank $90–$350 plus labor, permits $25–$300, power-vent $600–$1,100, relocation $150–$3,400), Fixr (expansion tank $150–$400, disposal $50–$150, power venting $300–$1,000, removal up to $500, utility rough-in $400–$1,800, direct/power venting up to $3,400–$10,200 in major cases, permits $25–$1,500 in high-cost areas).

40-gallon vs 50-gallon: which should you choose?

The price difference between a 40-gallon and a 50-gallon tank is usually modest, often $100 to $300 for the unit, so many homeowners choose 50 gallons for a comfort margin. But bigger isn’t always better.

Operating costs for 40-gallon tanks from Fixr. Actual costs depend on local energy rates and usage.

A practical tip: if your current tank size has been working fine, replace it with the same size. If you regularly run out of hot water, a 50-gallon tank, a higher first-hour rating, or a different technology may solve the problem. Gas tanks recover faster than electric tanks of the same size, so a 40-gallon gas tank can often do the job of a 50-gallon electric tank.

Gas vs electric 50-gallon water heater

• Up-front cost: electric tanks are cheaper to buy and install because they need no venting or gas connection.
• Running cost: gas is usually cheaper to operate. Fixr estimates a 40-gallon electric tank costs $550–$700 a year to run versus $300–$450 for gas; Inch Calculator says electric typically costs $100–$300 more per year than gas.
• Recovery: gas tanks reheat water faster.
• Lifespan: both typically last 8–12 years, depending on water quality and maintenance. See water heater lifespan.
• Switching fuels: going from electric to gas (or gas to electric) can add hundreds to thousands of dollars for new lines or circuits.

For a complete comparison, see our gas vs electric water heater replacement cost guide. If you have an electric tank and want lower bills, a heat pump water heater is worth pricing; if you want endless hot water and have gas, see tankless water heater cost and tankless vs tank.

Factors that affect replacement cost

• Fuel type and venting: gas tanks need a proper vent; power-vent models cost more and need an outlet.
• Efficiency: high-efficiency and heat pump models cost more up front.
• Location and access: attics, crawl spaces, tight closets and stairs increase labor.
• Code compliance: older installs often need upgrades such as expansion tanks, drain pans or seismic straps (required in California).
• Emergency service: after-hours or weekend calls cost more.
• Warranty length: 9- and 12-year models cost more than 6-year models.
• Permit fees: vary dramatically by city and county.

Regional variation

The same 50-gallon tank swap can cost noticeably more in a high-cost metro than in a rural area. Plumber rates range from about $45 to $200 per hour nationally, and the highest rates are common in the Northeast, California, the Pacific Northwest and large metro areas. Permit costs also vary widely, from around $25 to $1,500 according to Fixr. Local code adds cost in some regions: seismic strapping in California and other earthquake-prone areas, expansion tanks where water utilities install backflow devices, and drain pans for heaters in attics or finished spaces. Climate matters too: in cold northern states, incoming water is colder, so households may need more capacity to get the same amount of hot water.

How to save on a 40- or 50-gallon replacement

• Replace before it fails. If your tank is 10+ years old, start getting quotes now. Waiting until a leak means paying emergency rates and possibly water damage repairs.
• Get three quotes and ask for itemized pricing.
• Stick with the same size and fuel unless you have a reason to change.
• Check whether repair makes sense. A failed thermostat, element or thermocouple can be a much cheaper fix on a younger tank. See water heater repair cost.
• Look for utility rebates on high-efficiency gas or heat pump models.
• Maintain the new one. Annual flushing and anode rod checks can add years of life. See how to flush a water heater.

Tax credits in 2026

The federal Section 25C credit, which covered qualifying heat pump and high-efficiency gas water heaters, ended for equipment placed in service after December 31, 2025 under the One Big Beautiful Bill Act. Water heaters installed in 2026 do not qualify for that credit. Income-qualified households may still find state HEEHRA rebates of up to $1,750 for heat pump water heaters where those programs have launched.

DIY vs professional replacement

Experienced DIYers sometimes replace electric tanks themselves, and some areas allow homeowners to pull their own permit. But there are good reasons most homeowners hire a licensed plumber:

• Gas safety: connecting gas lines and venting incorrectly can cause gas leaks or carbon monoxide poisoning. Many jurisdictions require a licensed professional for gas work.
• Permits and code: most areas require a permit and inspection for water heater replacement. Unpermitted work can create problems with insurance claims or a home sale.
• T&P valve and discharge pipe: must be installed correctly to prevent a dangerous pressure buildup.
• Weight: a full 50-gallon tank weighs over 400 pounds; even empty, a tank is heavy and awkward on stairs.
• Warranty: some manufacturers require professional installation.

If you do the work yourself, turn off power or gas, drain the tank fully, follow the manufacturer’s instructions and local code, and have the work inspected.

How to hire a plumber for a water heater replacement

1. Verify the plumber’s state license and liability insurance.
2. Read recent reviews and ask how many water heaters they install each month.
3. Get at least three written quotes with the brand, model, size and warranty listed.
4. Confirm who pulls the permit and schedules inspection.
5. Ask about the labor warranty separately from the manufacturer’s warranty.

Questions to ask

• Is the price all-in, including permit, haul-away, connectors and any expansion tank?
• What code upgrades will my installation need?
• Is my current size right for my household, or would you recommend a change?
• Does my gas vent meet current requirements?
• How long is the tank warranty, and what does it cover?
• Can you install it today or tomorrow if my tank is leaking?
• Would a heat pump or tankless model make sense for my home?

For overall pricing across every water heater type, read our main water heater replacement cost guide.

FAQs

How much does it cost to replace a 50-gallon water heater?

A standard 50-gallon tank typically costs $800 to $2,800 installed. Electric models usually cost $800 to $2,200 and gas models $1,000 to $2,800. A 50-gallon heat pump model typically costs $2,500 to $4,500 installed.

How much does it cost to install a 40-gallon water heater?

Fixr puts a 40-gallon electric replacement at $700 to $1,650 and a 40-gallon gas replacement at $700 to $2,300, with a standard gas replacement averaging about $1,650.

How much does a 50-gallon water heater cost at Home Depot or Lowe’s?

Standard 50-gallon tanks generally retail for about $500 to $1,800 depending on brand, fuel type and warranty. NerdWallet cites Home Depot’s average total installed cost for tank water heaters at about $1,950.

How long does it take to replace a 50-gallon water heater?

A like-for-like replacement usually takes 2 to 4 hours. Jobs that require new venting, gas lines, electrical work or relocation can take a full day or more.

Is 50 gallons enough for a family of four?

Usually, yes. A 50-gallon tank is the most common choice for three to four people. Check the first-hour rating on the label, which tells you how much hot water the tank can deliver in an hour of heavy use.

Should I replace my 40-gallon water heater with a 50-gallon?

Only if you regularly run out of hot water or your household has grown. A bigger tank costs more to buy and has more standby heat loss. Make sure the larger tank fits the space and venting.

How long does a 50-gallon water heater last?

Most tank water heaters last about 8 to 12 years, sometimes longer with regular flushing and anode rod replacement. Hard water and high temperature settings can shorten that.

Is it cheaper to replace a gas or electric water heater?

Electric water heaters are usually cheaper to buy and install, but gas water heaters usually cost less to run each year. Over the life of the unit, gas often comes out ahead where natural gas is cheap.

Do I need a permit to replace a water heater?

In most US jurisdictions, yes. Permit fees typically range from about $25 to $300, though some cities charge more. Your plumber normally pulls the permit as part of the job.

Why is an 80-gallon water heater so much more expensive?

Federal efficiency standards require most electric water heaters over 55 gallons to use heat pump technology and push large gas tanks toward high-efficiency designs, so 65- to 80-gallon units are often premium models. Fixr puts 80-gallon installations at $1,200 to $3,600, and heat pump models can cost more.

Last updated: October 2026

A heat pump (hybrid) water heater typically costs $2,500 to $5,500 installed in the US, with the heater itself running about $1,200 to $3,000 for a 40- to 65-gallon model. A simple swap for an existing electric tank can come in near the low end, while replacing a gas water heater that needs a new 240-volt circuit, a condensate drain or a panel upgrade can push the total to $6,000 to $10,000 or more.

Heat pump water heaters cost more up front than standard tanks, but they use a fraction of the electricity of a conventional electric water heater. Below you’ll find detailed cost tables, realistic savings estimates, the current status of tax credits and rebates (the federal 25C credit ended after 2025), and the space and climate requirements that decide whether one will work in your home.

Heat pump water heater cost at a glance

Sources disagree more on heat pump water heaters than on any other type, largely because some quote only simple electric-to-electric swaps while others include gas-to-electric conversions. Angi and HomeAdvisor put typical projects at $1,200 to $3,500; Fixr gives $1,200 to $4,600; Rewiring America’s cost analysis found $3,600 to $4,800 when replacing an electric tank and $4,300 to $6,500 when replacing a gas unit. Real-world project data published by Santa Barbara, California (updated May 2026) showed installed prices from about $2,100 to $10,200 for 240V units without a panel upgrade. Our “most homes” range reflects the overlap.

Heat pump water heater cost by tank size

Unit prices from Angi (updated July 2026) and HomeServe (updated October 2026). Installed estimates add typical labor of $600 to $2,000 and assume an existing 240V circuit. Gas-to-heat-pump conversions cost more (see below).

Because a heat pump heats water more slowly than a gas burner, many installers recommend going up one size (for example, 50 to 65 gallons) when replacing a gas tank, especially for larger households. See our guide to what size water heater you need for first-hour rating math.

Cost by efficiency rating (UEF)

Heat pump water heaters are rated by Uniform Energy Factor (UEF). A standard electric tank has a UEF a little under 1.0; heat pump models typically range from about 2.75 to 4.0. Higher UEF means lower running costs, but a higher price.

Source: HomeServe cost guide (October 2026).

Heat pump water heater installation cost breakdown

The installation cost is where projects diverge. A like-for-like swap from an electric tank in a roomy basement is straightforward. A conversion from gas in a small closet is not.

Sources: HomeServe (labor, circuit, pipe, code updates), This Old House (panel upgrade, removal), HomeAdvisor and Fixr (permits).

The Santa Barbara project data shows how much an electrical panel changes the picture: five projects that needed a panel upgrade ranged from about $8,300 to $15,700, compared with roughly $2,100 to $10,200 for 240V projects without one. If your home has 100-amp service and you’re also planning an EV charger or heat pump HVAC, it’s worth having an electrician do a load calculation before you buy anything.

For more on how plumbers price installations, see our water heater installation labor cost guide.

120V plug-in heat pump water heaters

The newest option for avoiding electrical work is a 120-volt plug-in heat pump water heater. These units plug into a standard household outlet instead of needing a 240V circuit. Rheem’s ProTerra line, for example, includes 120V plug-in models in 40-, 50- and 65-gallon sizes, and other major manufacturers have introduced 120V models as well.

• Best for: replacing a gas water heater where running a 240V circuit would be expensive or would require a panel upgrade.
• Circuit options: some models need a dedicated 15A or 20A circuit; others are designed to share an existing circuit. Check the specific model’s installation manual.
• Trade-off: 120V units generally have no high-power resistance backup element, so they recover more slowly after heavy use. Many installers size up (for example, 65 gallons instead of 50) and set a mixing valve to stretch capacity.
• Cost: the units are priced similarly to 240V heat pump models; the savings come from avoiding electrical upgrades. In the Santa Barbara data, 120V projects without panel upgrades ranged from about $3,600 to $8,500, which reflects California labor costs.

Operating cost and savings

A heat pump water heater moves heat from the surrounding air into the water instead of generating heat directly. The US Department of Energy says these units can be two to three times more energy efficient than conventional electric resistance water heaters, and ENERGY STAR says certified models can be up to four times more efficient.

How much you save depends on your electricity rate, how much hot water you use and what you’re replacing:

Example: estimating your own savings

Here’s a simple illustration (assumptions, not a guarantee). Suppose your electric tank uses 3,500 kWh a year and you pay $0.17 per kWh. That’s about $595 a year. A heat pump unit with a UEF of 3.5 compared with a standard tank at about 0.93 would use roughly a quarter of that electricity, around 930 kWh, or about $160 a year. Your savings would be roughly $435 a year. Smaller households, cheaper electricity or a cold basement would reduce that number; larger families and expensive electricity would increase it.

Replacing gas? Savings are less certain. Where natural gas is cheap, a heat pump water heater may cost about the same to run as a gas tank, or slightly more. Where electricity is cheap or gas is expensive, it can come out ahead. Compare fuel costs in our gas vs electric water heater replacement cost guide.

Payback period

Replacing a failing electric tank is where heat pump water heaters make the strongest financial case. If a heat pump model costs $1,500 more installed than a standard electric tank and saves $300 to $500 a year, simple payback is about three to five years. ENERGY STAR’s own estimate was 2.7 years for a family of four. Rebates shorten that further.

Tax credits and rebates for heat pump water heaters (October 2026)

Federal tax credit (25C): ended for 2026 installations

The Energy Efficient Home Improvement Credit (Section 25C) used to cover 30% of the cost of a qualifying heat pump water heater, up to $2,000 a year. The One Big Beautiful Bill Act, signed in July 2025, terminated this credit for property placed in service after December 31, 2025. Per IRS guidance, the date that matters is when the system is installed and placed in service, not when you paid for it.

• Installed in 2026: no federal 25C tax credit.
• Installed and placed in service by December 31, 2025: you can still claim the credit on your 2025 federal return (IRS Form 5695).

Be cautious of any contractor or website still advertising a “30% federal tax credit” on a new 2026 installation.

HEEHRA (Home Electrification and Appliance Rebates)

The separate Inflation Reduction Act rebate program, known as HEEHRA or HEAR, was not repealed by the One Big Beautiful Bill Act. It offers up to $1,750 toward a heat pump water heater for income-qualified households. It is run by each state, not the IRS, and is usually applied as an instant discount through an approved contractor.

• Eligibility: households earning up to 80% of area median income (AMI) can get up to 100% of costs covered (capped at $1,750); households between 80% and 150% of AMI can get up to 50% of costs (capped at $1,750). Households above 150% AMI are not eligible.
• Availability: as of June 2026, the Building Performance Association reported that 12 states and Washington, DC had launched home energy rebate programs. The rest had not yet launched, and South Dakota did not apply for funding.
• Program changes: DOE issued updated HEEHRA guidance on June 1, 2026 that, among other changes, limits rebates for replacing non-electric appliances under some circumstances. If you’re switching from gas to a heat pump, confirm your state program still covers that.
• Funding can run out: some programs have used up initial funding and moved to waitlists.

Check your state energy office’s website for current program status before you sign a contract, because many programs require pre-approval and an enrolled contractor.

Utility and manufacturer rebates

Many electric utilities offer rebates on ENERGY STAR heat pump water heaters, sometimes as instant discounts at retailers. Amounts vary widely, from about $100 to $1,000 or more in states with strong efficiency programs. Use the ENERGY STAR Rebate Finder or the DSIRE database to search by ZIP code, and ask your plumber which programs they’re enrolled in.

Space and climate requirements

A heat pump water heater pulls heat from the air around it, so location matters more than with any other type.

• Temperature: DOE and ENERGY STAR say the space should stay between 40°F and 90°F year-round.
• Air volume: at least 1,000 cubic feet of air space around the unit (about a 12 x 12 ft room with 7 ft ceilings). Smaller closets can work with louvered doors or ducting.
• Height and clearance: the heat pump sits on top of the tank, so units are often taller than standard tanks. Measure ceiling height and service clearance.
• Condensate: heat pumps produce water that must drain to a floor drain, sink or condensate pump.
• Cooling effect: the unit cools and dehumidifies the room. That’s a bonus in a hot garage or humid basement, but a drawback if the unit is in heated living space during a cold winter.
• Noise: the compressor and fan make some noise, so avoid placing it right next to a bedroom.

Does a heat pump water heater work in cold climates?

Yes, as long as the unit is inside a space that stays above about 40°F, such as a basement or conditioned utility room. In very cold spaces, the unit switches to its electric resistance backup (hybrid mode), which uses more energy. Unheated garages in northern states are often a poor location. Warm-climate homes in the South and West get the best efficiency because the air is warmer.

Factors that affect heat pump water heater cost

• Existing fuel: electric-to-heat-pump is cheapest; gas-to-heat-pump adds electrical work, gas capping and sometimes a bigger tank.
• Electrical capacity: a 100-amp panel with no free spaces is the most common cause of a big price jump.
• Tank size and UEF: bigger and more efficient units cost more.
• Location and access: tight closets, attics and stairs add labor; relocation adds piping.
• Drainage: no floor drain means a condensate pump.
• Local code: expansion tanks, drain pans, seismic straps (required in California and other seismic areas) and permits.
• Contractor familiarity: installers who do many heat pump installs often price more competitively and size more accurately.

Regional cost differences

Labor and permit costs are higher in high-cost metro areas, particularly in the Northeast, California and the Pacific Northwest. The Santa Barbara data illustrates this: median completed project costs were about $5,370 in the city and $6,600 countywide, well above national averages. At the same time, states with strong incentive programs can bring net costs down dramatically. Climate matters too: homes in the South and Southwest get the highest efficiency, while homes in cold northern states should plan for basement installation.

How to save on a heat pump water heater

• Replace before failure. If your tank is 10+ years old, plan ahead. Emergency replacements often default to whatever standard tank is on the truck. See our water heater lifespan guide.
• Stack incentives. Combine utility rebates, retailer discounts and, if you qualify, state HEEHRA rebates.
• Consider a 120V plug-in model if a 240V circuit would trigger a panel upgrade.
• Use the right mode. Running in heat pump only or eco mode maximizes savings; high-demand mode uses the resistance elements more.
• Get three itemized quotes that separate the unit, labor, electrical and drain work.
• Maintain it. Clean the air filter every few months and flush the tank annually. See how to flush a water heater.

Federal efficiency rules to know

Under current federal standards, most electric storage water heaters larger than 55 gallons must already use heat pump technology. DOE has also finalized a rule taking effect May 6, 2029 that requires most electric storage water heaters between 35 and 120 gallons to use heat pump technology. Federal rules can change, but if you’re buying an electric tank today, a heat pump model is where the market is heading.

DIY vs professional installation

A handy homeowner with plumbing experience may be able to swap an electric tank for a heat pump unit of the same size, but most homeowners should hire a pro. The job involves:

• Draining and removing a heavy tank (and safely disposing of it)
• Sweating or connecting water lines, installing a T&P discharge line and sometimes an expansion tank
• Running a condensate drain
• Wiring a 240V circuit, which in most areas requires a licensed electrician and permit
• Capping a gas line and sealing an old vent when converting from gas

Most jurisdictions require a permit for water heater replacement, and rebates (especially HEEHRA) usually require installation by an approved contractor. DIY installation can also affect the manufacturer warranty. If your current tank is failing or leaking, a professional can usually complete the job in a day.

How to hire a plumber for a heat pump water heater

1. Check state licensing and insurance.
2. Ask how many heat pump water heaters they’ve installed and which brands they service.
3. Confirm whether they’re enrolled in your utility or state rebate program.
4. Request an on-site evaluation of your space, panel and drainage.
5. Get at least three written, itemized quotes.

Questions to ask

• Does my space meet the 40°F–90°F and 1,000-cubic-foot guidelines?
• Do I need a new 240V circuit or panel upgrade, or would a 120V model work?
• Where will the condensate drain go? Is a pump needed?
• What size and UEF do you recommend for my household, and why?
• Which rebates can you process for me, and do they require pre-approval?
• Does the quote include permits, removal of the old heater and gas line capping?
• What is your labor warranty?

For overall pricing on every type of water heater, see our water heater replacement cost guide, or compare with tankless water heater cost.

FAQs

How much does a heat pump water heater cost installed?

Most homeowners pay about $2,500 to $5,500 installed. Replacing an existing electric tank is usually at the lower end; replacing a gas heater with new electrical work is often $4,300 to $6,500 or more, and a panel upgrade can push projects above $8,000.

Is a heat pump water heater worth it?

For homes with electric water heaters, usually yes. ENERGY STAR estimates a family of four can save about $550 a year versus a standard electric tank, with payback in about three years. Savings are smaller when replacing gas where natural gas is cheap.

Is there a federal tax credit for heat pump water heaters in 2026?

No. The 25C credit (30% up to $2,000) ended for property placed in service after December 31, 2025. Income-qualified households may still get up to $1,750 through their state’s HEEHRA rebate program where it has launched, and many utilities offer rebates.

What are the disadvantages of a heat pump water heater?

Higher up-front cost, the need for space (about 1,000 cubic feet) in an area that stays between 40°F and 90°F, slower recovery than gas, some fan noise, a condensate drain requirement and a cooling effect on the surrounding room.

How long do heat pump water heaters last?

Fixr cites a typical lifespan of about 13 to 15 years, similar to or slightly longer than a standard tank. Annual flushing and regular filter cleaning help them last.

Can I plug a heat pump water heater into a regular outlet?

Only if it’s a 120V plug-in model. Standard heat pump water heaters need a 240V circuit. 120V models from manufacturers such as Rheem plug into a standard outlet, sometimes on a dedicated circuit, and recover hot water more slowly.

Do heat pump water heaters work in cold climates?

Yes, when installed in a space that stays above about 40°F, such as a basement. In colder spaces they rely more on backup resistance heating, which reduces savings.

How much does it cost to run a heat pump water heater?

Rewiring America estimated a median of about $90 a year versus about $230 for a conventional electric water heater. Your cost depends on your electricity rate, hot water use and installation location.

Does a heat pump water heater need a drain?

Yes. It produces condensate that must be routed to a floor drain, sink or condensate pump, just like a central air conditioner.

What size heat pump water heater do I need?

Most households of two to four people choose 50 gallons; larger families often go with 65 or 80 gallons. When replacing a gas heater, many installers recommend going up one size because heat pumps recover more slowly.

Last updated: October 2026

Most US homeowners pay $1,400 to $3,900 to have a whole-house tankless water heater installed, with national averages clustering around $2,500 to $2,800. A small electric point-of-use unit can cost a few hundred dollars, while converting a gas tank to a large gas tankless unit, with a new gas line, new venting and a condensate drain, can run $4,500 to $6,000 or more.

The single biggest swing factor is not the heater itself. It is what your home needs to support it: a bigger gas line, a new vent through the wall or roof, or an electrical service that can handle 100+ amps for an electric whole-house model. Below we break down every cost line so you can read a plumber’s quote with confidence.

Tankless water heater cost at a glance

These ranges are compiled from Angi (national average $2,641, typical range $1,406–$3,902, updated August 2026), HomeAdvisor (average $2,547, range $1,393–$3,814), This Old House (average $2,800, range $1,200–$3,500, updated June 2026) and Fixr (average about $2,811). Where sources differ, we show the overlap that most homeowners fall into.

How much does a tankless water heater cost by fuel type?

The fuel you use determines both the price of the unit and the work needed to install it. Gas units cost more to buy and install, but they usually cost less to run and can supply more hot water at once.

Sources: This Old House and Fixr fuel-type breakdowns. Totals assume a straightforward replacement; conversion work is extra (see below).

Electric tankless water heater cost

Electric tankless water heaters are the cheapest to buy and the simplest to plumb because they need no gas line and no vent. A whole-house electric unit typically costs $450 to $1,500, and installed prices commonly fall between $650 and $3,000. The catch is power. A 27 kW whole-house electric model draws well over 100 amps at 240 volts, which usually means two or three dedicated double-pole breakers and heavy-gauge wiring. HomeAdvisor notes that whole-house electric units need at least 240V, 80-amp hard-wired service and that the home should have at least 150-amp service; many electricians prefer 200 amps. If your panel is full or undersized, the electrical work can cost more than the heater.

Electric tankless is also limited by incoming water temperature. In northern states where groundwater may enter the house at 40–50°F, an electric unit has to raise the temperature by 70°F or more, which cuts its flow rate. Electric whole-house models are a better fit in warm-climate states, smaller homes, or as point-of-use units.

Gas tankless water heater cost

Gas tankless units cost $500 to $2,000 for the heater and roughly $1,400 to $3,500 installed for a like-for-like job. Large condensing models rated around 199,000 BTU/h can deliver enough hot water for two showers plus an appliance, even in cold climates. Condensing units run more efficiently and can vent through inexpensive PVC pipe, but they cost more up front (Bob Vila estimates about 25% more than non-condensing models) and need a condensate drain.

Propane tankless units cost about the same as natural gas units. Many models can be converted between fuels, but some require a conversion kit, so confirm which fuel the unit is configured for before you buy.

Tankless water heater cost by size (flow rate)

Tankless units are sized by gallons per minute (GPM) at a given temperature rise, not by gallons of storage. A typical shower uses about 2 GPM, so a home that needs two showers and a dishwasher running at once needs roughly 5–7 GPM of capacity at your local temperature rise.

Unit prices only, from Fixr. Premium brands, condensing technology, built-in recirculation pumps and Wi-Fi controls push prices toward the top of each band.

Not sure what capacity you need? Our guide to what size water heater you need walks through peak-demand math for both tank and tankless systems.

Tankless water heater installation cost: labor

Labor for a tankless installation typically runs $500 to $1,850, compared with roughly $150 to $450 for a simple tank-for-tank swap (HomeAdvisor). Tankless jobs take longer because the plumber usually has to wall-mount the unit, re-pipe the water connections, add isolation (service) valves for future descaling, and often modify gas, venting and electrical.

• Plumber rates: $45 to $200 per hour nationally; Fixr and This Old House put most licensed plumbers between $75 and $150 per hour.
• Time on site: 3 hours for an easy electric replacement up to 6–10 hours for a gas conversion.
• Electrician: $50 to $100 per hour for new circuits or breakers.
• Hard-to-reach locations: attics, crawl spaces and tight closets can add 10% to 15% to labor.

For a deeper look at how plumbers price their time, see our breakdown of water heater installation labor cost.

Cost to convert from a tank to a tankless water heater

If you are replacing an existing tankless unit, most of the infrastructure is already in place and you’ll pay close to the base installed price. Converting from a tank is where costs climb. Here is what can be added:

Sources: This Old House (gas line upsizing, venting, circuits, panel, removal, permits), Angi (gas line, pressure regulator), Fixr (gas line, wall repair). Fixr estimates a typical gas tank-to-tankless conversion adds about $1,700 including the gas line, and an electric conversion adds $90 to $450 when no panel work is needed.

Why gas line size matters

A typical 40- or 50-gallon gas tank uses about 40,000 BTU/h. A whole-house gas tankless heater can draw up to about 199,000 BTU/h when several taps are open. The ½-inch gas line feeding most tanks often can’t deliver that volume over any real distance, especially if your furnace, range and dryer are also on gas. Your plumber should calculate total connected load and pipe length before quoting. If a quote doesn’t mention gas line sizing on a tank-to-tankless conversion, ask about it.

Venting requirements

Tank water heaters often vent into a shared metal flue or chimney. Tankless units need their own vent. Non-condensing units require stainless steel vent pipe, while condensing units can usually use PVC or polypropylene. Both are typically run through an exterior wall or the roof. Location matters: moving the heater to an exterior wall can cut vent costs, but may lengthen water and gas lines.

Electrical requirements

Even gas tankless units need a 120V outlet for their fan and controls. Electric whole-house models are much more demanding. Expect to need dedicated 240V circuits sized to the unit’s amperage. Ask an electrician to do a load calculation before you buy an electric tankless model, since a $700 heater can trigger a panel or service upgrade.

Tankless water heater cost by brand

Unit-only price ranges from Fixr. Prices vary by model, capacity and retailer, and change frequently.

Brand matters less than correct sizing and a quality installation. That said, check the heat exchanger warranty (often 10–15 years for residential use on major brands) and whether a local plumber stocks parts for that brand.

Tankless water heater maintenance cost

Tankless water heaters need regular descaling, especially in hard-water areas. Minerals build up on the heat exchanger, reducing efficiency and eventually triggering error codes or failures.

Sources: Angi (preventive maintenance $50–$350 per visit, flush $110–$200), This Old House (system cleaning $100–$200, descaling up to $500 in some cases), Fixr (yearly, or every 6 months with hard water or high temperature settings).

Many homeowners descale their own units using a small submersible pump, hoses and white vinegar connected to the isolation valves. If your installer adds isolation valves (and they should), DIY descaling is a manageable job. Our guide on how to flush a water heater covers both tank and tankless units.

Common tankless repair costs

Angi puts the average tankless repair at about $600, with typical line items like a gas valve ($150–$550), heating element on electric units ($200–$300) and vent repairs ($50–$125). See our full water heater repair cost guide for more.

Operating costs and savings: is tankless worth it?

The US Department of Energy estimates that for homes using 41 gallons or less of hot water a day, tankless (demand) water heaters are 24% to 34% more energy efficient than conventional storage tanks. For homes using a lot of hot water (around 86 gallons a day), the advantage drops to 8% to 14%. In dollars, that is modest: Angi cites DOE estimates of roughly $100 a year in savings for gas units and $50 a year for electric.

Sources: This Old House and Fixr. Your actual cost depends on local gas and electricity rates and how much hot water you use.

With an extra $1,000 to $2,500 up front versus a tank, energy savings alone often take a long time to pay back. Tankless makes the most financial sense when:

• You already have a gas line and vent route that need little modification.
• You plan to stay in the home long enough to benefit from the longer lifespan (Fixr cites 20+ years for tankless vs 10–15 for tanks).
• You need endless hot water for a large tub or back-to-back showers.
• You need to free up floor space in a small utility room or closet.

For a full side-by-side comparison, read tankless vs tank water heater. If you want the lowest operating cost on an electric system, compare tankless against a heat pump water heater, which typically uses far less electricity than either electric tankless or a standard electric tank.

Factors that affect tankless water heater cost

• Fuel switch: Going from electric tank to gas tankless (or the reverse) adds the most cost because you need new utility service to the heater.
• Capacity: Larger GPM ratings and cold incoming water require bigger, more expensive units.
• Condensing vs non-condensing: Condensing units cost more but are more efficient and use cheaper vent materials.
• Location: Moving the heater to an exterior wall, garage or attic changes piping, venting and labor.
• Recirculation: Units with a built-in recirculation pump, or adding a separate pump and return line, reduce wait time for hot water but add cost.
• Water quality: Hard water may justify a scale-prevention system and more frequent maintenance.
• Local code: Requirements for permits, sediment traps, gas shutoffs, combustion air and condensate neutralizers vary by city.
• Old unit disposal: Some plumbers include haul-away; others charge separately.

Regional cost differences

National averages hide large local swings. Plumber rates range from about $45 to $200 an hour, and the high end is typical in big metro areas in the Northeast and on the West Coast, where licensing, insurance and overhead costs are higher. Permit fees also vary widely, from under $50 in some towns to several hundred dollars in others.

Climate plays a role too. In colder northern states, incoming water is colder, so you need a higher-capacity unit to deliver the same flow. Outdoor-mounted tankless units are common in warm states like Florida, Texas, Arizona and California, which can reduce venting cost, but cold-climate installations may require freeze protection and pipe insulation (Fixr estimates up to $400 extra for cold-climate venting and insulation). The only reliable way to know your local price is to get several itemized quotes.

How to save on a tankless water heater

• Get at least three itemized quotes. Ask each plumber to break out unit, labor, gas line, venting, electrical and permits.
• Keep the heater near the existing location when possible to limit re-piping.
• Check utility rebates. Some gas utilities offer rebates on high-efficiency condensing units; ENERGY STAR’s Rebate Finder lets you search by ZIP code.
• Don’t oversize. A correctly sized unit costs less and runs efficiently. Ask your plumber to show the GPM and temperature-rise math.
• Time it before failure. Replacing a tank that is 10+ years old before it leaks lets you shop calmly instead of paying emergency rates. See our guide to water heater lifespan.
• Consider a tank if the conversion is expensive. If your quotes include $2,000+ in gas line and venting work, a high-efficiency tank or heat pump unit may be the better value. Compare with our water heater replacement cost guide.

A note on federal tax credits

The federal Energy Efficient Home Improvement Credit (Section 25C), which offered up to $600 for qualifying gas tankless water heaters, was ended by the One Big Beautiful Bill Act for property placed in service after December 31, 2025. A tankless heater installed in 2026 does not qualify for that credit. If your unit was installed and placed in service in 2025, you can still claim it on your 2025 tax return. Check local utility and state programs for any remaining incentives.

DIY vs professional tankless installation

Installing a tankless water heater is not a beginner DIY job, and in most places it legally requires a permit. Gas tankless installations involve sizing and connecting gas lines, venting combustion gases, and in many jurisdictions only a licensed plumber or gas fitter may do that work. Mistakes can cause gas leaks, carbon monoxide exposure or fires.

Electric whole-house tankless units involve high-amperage 240V circuits that should be installed by a licensed electrician. A small point-of-use electric unit under a sink is the one realistic DIY project, provided the circuit already exists and your local code allows it.

Doing it yourself can also void the manufacturer’s warranty, since many brands require professional installation. For a $1,000+ heater with a 10–15 year heat exchanger warranty, that is a real risk. If you’re replacing a leaking water heater in a hurry, a professional also handles permits, inspections and haul-away.

How to hire a plumber for a tankless installation

1. Verify licensing and insurance. Check your state’s license lookup and ask for proof of liability insurance.
2. Look for tankless experience. Ask how many tankless units they install per year and which brands they’re certified with.
3. Request an on-site visit. Good quotes require checking your gas meter, gas line size, vent route and electrical panel.
4. Get itemized, written quotes from at least three contractors.
5. Confirm who pulls the permit and that the price includes inspection.

Questions to ask before you sign

• What GPM do I need, and what temperature rise did you assume for my area?
• Does my gas line need to be upsized, and is that included?
• Where will the vent terminate, and what material will you use?
• Will you install isolation valves for descaling?
• Is the unit condensing? Where will the condensate drain go?
• Does the price include permits, disposal of the old tank and wall patching?
• What does your labor warranty cover, and for how long?
• Will you register the unit for the manufacturer’s warranty?

FAQs

How much does a tankless water heater cost installed?

Most homeowners pay $1,400 to $3,900 for a professionally installed whole-house tankless water heater, with national averages around $2,500 to $2,800. Converting from a gas tank, with a new gas line and venting, can push the total to $4,500 to $6,000 or more.

How much does it cost to convert from a tank to a tankless water heater?

On top of the heater and basic labor, conversions commonly add $400 to $800 for gas line upsizing, $400 to $800 for new venting, $200 to $600 for an electrical circuit and $1,000 to $2,000+ if an electric unit requires a panel upgrade. Fixr estimates a typical gas conversion adds about $1,700.

Is a tankless water heater worth the money?

It can be if you have gas service nearby, plan to stay in your home long term, want endless hot water or need to save space. DOE estimates tankless units are 24% to 34% more efficient for homes using 41 gallons or less a day, but the dollar savings (often $50 to $100+ a year) mean payback on the higher up-front cost can take many years.

How long does a tankless water heater last?

With regular descaling, many tankless water heaters last 20 years or more, compared with about 10 to 15 years for a typical tank. Lifespan depends on water hardness, usage and maintenance.

Do tankless water heaters need maintenance?

Yes. They should be descaled about once a year, or every six months with hard water. A professional service typically costs $110 to $350, or you can do it yourself with a pump-and-vinegar kit if isolation valves are installed.

Is electric or gas tankless cheaper?

Electric tankless is cheaper to buy and install ($650 to $3,000 installed) but often costs more to run. Gas tankless costs more up front ($1,400 to $3,500 installed) and usually costs less per year to operate, especially for larger households.

What size tankless water heater do I need?

Add up the flow rates of fixtures you’ll run at the same time (a shower is about 2 GPM) and size for the temperature rise in your area. Many homes with two bathrooms need 5 to 7 GPM. Cold-climate homes need more capacity than warm-climate homes for the same flow.

Can a tankless water heater run out of hot water?

It won’t run out the way a tank does, but if you open more fixtures than the unit is sized for, the water temperature will drop. Proper sizing prevents this.

Is there a tax credit for tankless water heaters in 2026?

No federal tax credit applies to tankless water heaters installed in 2026. The Section 25C credit ended for property placed in service after December 31, 2025. Some gas utilities and local programs still offer rebates, so check with your utility.

Do I need a permit to install a tankless water heater?

In most US jurisdictions, yes. Gas line, venting and electrical changes typically require a permit and inspection. Permit fees usually range from about $50 to $300, and a licensed plumber normally pulls the permit for you.

Last updated: October 2026

Replacing a gas water heater typically costs $700 to $3,100 installed, with a national average of about $1,900 for a standard tank. An electric water heater replacement usually costs $600 to $1,900, averaging about $1,000. Electric is cheaper to buy and install. Gas is usually cheaper to run, while a hybrid heat pump electric unit ($2,000 to $4,600 installed) has the lowest running cost of the three.

Below we compare upfront prices, labor, add-ons, operating costs and conversion costs side by side, so you can decide whether to stay with your current fuel or switch.

Gas vs electric water heater cost at a glance

Installed and labor ranges come from Fixr (January 2026), HomeGuide (January 2026) and Angi/HomeAdvisor. Running costs are HomeGuide and Fixr estimates. Heat pump lifespan is ENERGY STAR’s assumption. Your actual costs depend on local utility rates.

Gas water heater replacement cost

According to Fixr’s 2026 data, the average cost to replace a gas water heater is about $1,900, with most standard tank replacements in an existing gas setup between $1,000 and $2,700. HomeGuide puts a 40–50 gallon gas tank at $900 to $3,100 installed, and Angi at $700 to $2,700.

Gas water heater cost by tank size

Source: Fixr gas water heater cost data (2026).

Gas water heater cost by venting type

The vent is where gas installs get expensive. There are three common setups:

• Atmospheric (natural draft): Exhaust rises through a metal flue or chimney. This is the cheapest option, and it’s usually what you already have.
• Power vent: A fan pushes exhaust out through PVC pipe, often through a side wall. It costs $300 to $600 more than a standard unit and needs an electrical outlet. Budget another $300 to $500 if one has to be added.
• Direct vent: This sealed system draws combustion air from outside. Fixr puts direct-vent venting work at about $500.

New venting runs $500 to $1,500 when needed, while replacing existing vent pipe costs $100 to $600 (HomeGuide). If the heater vents into an unlined masonry chimney, a liner can add $500 to $700.

Gas water heater installation cost: labor and extras

Ranges are compiled from HomeGuide, Angi, Fixr and This Old House. For a deeper look at installer pricing, see our water heater installation labor cost guide.

Propane water heaters

Propane units cost about the same as natural gas to buy and install, roughly $700 to $2,500 (Angi, Fixr). They’re common in rural homes without utility gas. Running costs are usually higher than natural gas because propane costs more per unit of heat. A new propane tank installation, if you don’t already have one, is a separate cost.

Electric water heater replacement cost

Fixr reports an average of about $1,000 to replace an electric water heater, with most jobs between $800 and $1,500 and a full range of $500 to $3,500. HomeGuide puts a 40–50 gallon electric tank at $600 to $1,800 installed.

Electric water heater cost by size and type

Sources: Fixr (2026) and HomeGuide (2026).

Electric water heater installation cost: labor and electrical work

Labor for a like-for-like electric tank swap is typically $150 to $600. Electrical upgrades only come into play if your circuit is inadequate or you’re switching fuel:

Sources: HomeGuide and Fixr. Whole-home electric tankless heaters draw much more current than tank models, and they’re the most likely to need a panel upgrade.

For heat pump models specifically, which need room air, a condensate drain and sometimes a dedicated circuit, see heat pump water heater cost.

Operating costs: gas vs electric over the life of the heater

Water heating is one of the largest energy uses in a home, so running cost matters as much as the price tag. Typical estimates:

Annual figures come from HomeGuide, with Fixr estimating about $575 per year for gas and about $720 per year for electric. The 10-year column is simple multiplication with no rate changes. ENERGY STAR estimates a certified heat pump water heater saves a household of four about $550 per year, or about $5,610 over its lifetime, compared with a standard electric unit. That assumes electricity at $0.146/kWh.

What this means in practice: A standard electric tank is cheapest to install but often costs the most to run. Over a 10-year life, a gas tank’s higher installation cost is usually recovered through lower energy bills in areas with typical gas prices. A heat pump water heater costs the most upfront but can be the cheapest to own, especially where electricity rates are moderate or rebates are available. Your local gas and electric rates decide the winner, so check your utility bills.

Gas vs electric: pros and cons

Gas water heaters

• Pros: Usually lower running cost. Faster recovery, which is good for big households. Many standing-pilot models work during a power outage.
• Cons: Higher installation cost. Need venting, combustion air and a carbon monoxide detector nearby. A gas leak or backdraft risk if installed poorly. Annual safety checks are recommended.

Electric water heaters

• Pros: Lowest upfront cost. No venting or combustion. Can be installed almost anywhere with a 240V circuit. Simple, low-maintenance design.
• Cons: Standard resistance models are often the most expensive to run. Slower recovery. No hot water in a power outage.

Hybrid heat pump (electric)

• Pros: Lowest operating cost. Rebates are available in many states and utilities. It also dehumidifies and cools the space around it.
• Cons: Highest upfront cost. Needs space and air volume (often a garage or basement), a condensate drain, and is noisier than a standard tank. Some models need a 240V circuit, though 120V plug-in models exist for easier replacements.

Cost to switch from gas to electric, or electric to gas

Switching fuel is where a simple replacement becomes a larger project. HomeGuide and Fixr give these ranges:

Electric-to-gas costs the most when your home doesn’t already have gas service near the water heater. Gas-to-electric is often cheaper, but an older 100-amp panel may need upgrading first. Ask your plumber to price both before you commit. The energy savings may take years to recover a $2,000+ conversion.

Choosing between tank and tankless at the same time? Read tankless vs tank water heater and tankless water heater cost.

Regional factors that change the gas vs electric math

• Utility rates: In states with expensive electricity, gas or heat pump units usually win on running cost. Where gas is pricey or unavailable, electric and heat pump units make more sense.
• Labor rates: Installed costs run up to 45% above average in the Pacific Northwest and about 20% below in South Florida, per Home Depot data cited by This Old House. City averages range from about $1,300 (Austin, Phoenix) to $1,900 (Los Angeles, San Diego) according to Angi data compiled by Bob Vila.
• Climate: Heat pump water heaters work best in spaces that stay roughly 40°F to 90°F. In a cold garage, they rely more on their backup resistance elements.
• Local rules: Some cities and states have adopted rules or incentives favoring electric appliances in new construction. Seismic straps are mandatory in California and other earthquake zones regardless of fuel.

Ways to save, and an accurate rebate picture for 2026

• Federal tax credit: ended. The 25C Energy Efficient Home Improvement Credit (up to $2,000 for heat pump water heaters and up to $600 for qualifying gas water heaters) was terminated by the One Big Beautiful Bill Act for property placed in service after December 31, 2025. Units installed in 2026 don’t qualify. If your unit was installed by the end of 2025, you can still claim it on your 2025 tax return.
• State rebates (HEEHRA/HEAR): These IRA-funded programs, run by states, can pay up to $1,750 toward a heat pump water heater for income-qualified households (up to 150% of area median income). Rollout differs by state, and some programs have waitlists, so check your state energy office.
• Utility rebates: Many utilities offer rebates on heat pump and high-efficiency gas water heaters. Check before you buy, because some require pre-approval or a participating contractor.
• Stay with your current fuel unless the operating savings clearly outweigh the conversion cost.
• Set the thermostat to 120°F. The DOE recommends this setting for most households. It cuts standby losses and scalding risk.
• Maintain it. Flushing sediment helps both gas and electric tanks last longer. See how to flush a water heater.

A note on future federal efficiency rules

In 2024 the DOE finalized new efficiency standards for residential water heaters. According to manufacturer A.O. Smith, they take effect May 6, 2029. Under those rules, most electric tanks from 35 to 120 gallons would effectively need heat pump technology, and common 20–55 gallon gas tanks would face higher efficiency requirements. Federal energy rules have been under review since 2025, so confirm the current status if you’re planning several years ahead. These rules don’t affect heaters already installed.

Repair or replace: gas vs electric problems

Rule of thumb: replace if the heater is past 10 years or the repair costs 50% or more of a new unit. See water heater repair cost, water heater lifespan and water heater leaking.

DIY vs professional: gas and electric safety

• Gas: Leaks and venting errors can cause fires or carbon monoxide poisoning. Many jurisdictions require a licensed plumber and a gas permit. This is not a beginner DIY job.
• Electric: 240V circuits can be lethal. Always shut off the breaker and confirm the power is off, and fill the tank completely before restoring power to avoid burning out the elements.
• Both: Permits, inspections and code items (expansion tank, T&P discharge, straps, pans) still apply. An unpermitted install can affect insurance and home sales.

How to hire a plumber and compare gas vs electric quotes

1. Ask each plumber to quote both options if you’re considering switching, with the conversion work itemized.
2. Verify the license and insurance. For conversions, check that the electrician or gas fitter is licensed too.
3. Compare the exact models, their efficiency (UEF) ratings and warranty lengths, not just the price.
4. Confirm permits, haul-away and code upgrades are included.

Questions to ask

• Is my existing gas line large enough, and is my vent in good condition and up to code?
• Does my electrical panel have capacity for an electric or heat pump water heater?
• What will this unit cost to run per year at my utility rates?
• Do I qualify for any state or utility rebates, and will you handle the paperwork?
• What’s the tank warranty and your labor warranty?
• How long will the job take, and will I lose hot water overnight?

FAQs

Is it cheaper to replace a gas or electric water heater?

Electric is usually cheaper to replace, at about $600 to $1,900 installed versus $700 to $3,100 for gas. Gas units need venting and gas connections, which add labor.

How much does it cost to replace a gas water heater?

Most homeowners pay $1,000 to $2,700 to replace a gas tank water heater in a home with existing gas, and the average is about $1,900 according to Fixr. Broader ranges from HomeGuide and Angi run $700 to $3,100.

How much is a 50-gallon gas water heater installed?

A 50-gallon gas water heater typically costs $900 to $2,500 installed, depending on brand, venting type and code upgrades. See our 50-gallon water heater replacement cost guide for more.

Is a gas water heater cheaper to run than electric?

In most areas, yes. Estimates put a gas tank at about $250 to $575 per year versus $530 to $720 for a standard electric tank. A heat pump water heater, at about $160 to $190 per year, is cheaper to run than either.

Which lasts longer, a gas or electric water heater?

Both typically last 8 to 12 years. Electric tanks sometimes last a little longer because they have no burner or flue exposed to combustion, but water quality and maintenance matter more than fuel.

How much does it cost to convert from gas to an electric water heater?

Expect roughly $250 to $2,500 on top of the heater. That covers a new 240V circuit, capping the gas line and possibly a panel upgrade.

How much does it cost to switch from electric to gas?

Typically $400 to $3,500+ on top of the heater, depending on how far the gas line has to run, venting requirements, and whether you need new gas service.

Are heat pump water heaters still eligible for a tax credit?

Not for installations in 2026. The federal 25C credit ended for property placed in service after December 31, 2025. State rebates (up to $1,750 for eligible households) and utility rebates may still apply.

Does a gas water heater work without electricity?

Many standard gas tanks with a standing pilot keep heating during a power outage. Power-vent, direct-vent with electronic ignition, and most tankless gas models need electricity to run.

Should I replace my electric water heater with a heat pump model?

If you have the space (usually a garage, basement or large utility room), a heat pump unit can cut water heating bills substantially. ENERGY STAR estimates about $550 per year for a family of four. It costs more upfront, so check your state and utility rebates first.

Last updated: October 2026

Labor to install a standard tank water heater typically costs $150 to $1,000, with most like-for-like swaps between $200 and $600 for electric and $400 to $1,000 for gas. Tankless installs cost $600 to $3,000 in labor alone. Once you add a typical $400 to $2,100 unit, the total water heater installation cost usually comes to $600 to $3,100 for a tank and $1,400 to $5,600 for tankless.

This guide breaks down what plumbers charge per hour and per job, why gas labor costs more than electric, which extras get added to the labor line, and how Home Depot and Lowe’s installation programs work.

Water heater installation cost at a glance

Figures combine HomeGuide (December 2025/January 2026), Angi/HomeAdvisor, Fixr (January 2026) and This Old House (June 2026). For the complete project cost, including the unit itself, see our water heater replacement cost pillar guide.

Labor cost to install a water heater by type

The labor share of your bill depends mostly on the kind of heater and how much has to change. Swapping a 50-gallon electric tank for another one is a short job. Converting to a tankless gas unit can mean a new gas line, new venting and new water piping.

Labor ranges come from HomeGuide, Angi and Fixr. Fixr puts labor at about 20% to 25% of the total for a gas tank job and about 50% for tankless.

Thinking of upgrading? Our tankless water heater cost and heat pump water heater cost guides cover the extra installation work those units need.

Labor cost to install or replace a gas water heater

Expect to pay roughly $200 to $1,000 in labor to replace a gas water heater with a similar gas tank. Fixr’s 2026 data puts gas tank labor at $200 to $650 for a straightforward swap, and HomeGuide’s at $400 to $1,000. Gas jobs cost more than electric because the installer has to:

• Shut off and disconnect the gas supply, then reconnect it with a new flex connector and sediment trap where required
• Leak-test every gas joint
• Inspect and reconnect the vent or flue, and correct slope, clearances and connector size
• Check for proper draft so combustion gases leave the home, which is a carbon monoxide safety step
• Light the pilot or start the burner and confirm the gas valve and thermostat work

Labor for a gas water heater rises quickly if any of the following apply:

Sources are HomeGuide, Angi and This Old House. For a deeper comparison of fuel types, see gas vs electric water heater replacement cost.

Labor cost to install an electric water heater

An electric tank replacement is usually the cheapest install: about $150 to $600 in labor. There’s no venting or gas work. The installer drains and disconnects the old tank, sets the new one, connects water lines and the 240V wiring, fills the tank completely, then restores power.

Electrical work becomes the main extra cost when you move from gas to electric, add a heat pump unit, or install electric tankless:

• New dedicated 240V circuit: $250 to $900 (HomeGuide). Fixr lists a basic 240V outlet from $140 to $300 when the run is short.
• Sub-panel: $400 to $2,000
• Panel replacement or 200-amp service upgrade: $850 to $3,000. This is common for whole-home electric tankless, which can draw a lot of current.
• Electrician rate: roughly $50 to $130 per hour

Plumber hourly rates and how jobs are priced

Most plumbers quote water heater installs as a flat job price rather than strictly by the hour, but the hourly rate is built in. National ranges:

• Standard hourly rate: $45 to $200 per hour, depending on region and whether it’s a licensed master or a journeyman
• Difficult access (attics, crawlspaces, tight closets): HomeGuide reports $125 to $300 per hour, and attic installs can add $200 to $1,000 overall
• Emergency, after-hours, weekend and holiday: often 25% to 50% above normal rates
• Trip or service-call fee: some plumbers charge one separately, and it’s usually waived if you hire them

A flat-rate quote is fine, and often preferable, as long as it’s itemized so you can see what’s included.

What’s included in water heater installation labor?

A standard installation quote should cover:

1. Shutting off water and power or gas, then draining the old tank
2. Disconnecting and removing the old heater
3. Setting the new unit in the same location
4. Connecting hot and cold water lines, usually with new flexible connectors
5. Connecting gas and venting, or electrical wiring
6. Installing or reusing the T&P relief valve and discharge pipe
7. Filling, purging air, starting the unit and testing for leaks and draft
8. Cleanup, and usually haul-away

Materials such as fittings, valves, connectors and pipe typically add $150 to $500 (HomeGuide). They’re often bundled into the labor price.

Extra charges that get added to the labor bill

These are the line items that most often surprise homeowners. Many relate to code changes since the old heater was installed.

Ranges are compiled from HomeGuide, Angi, Fixr and This Old House.

Home Depot water heater installation cost

Home Depot doesn’t publish one national flat labor price for water heater installation. Instead, it quotes each job after an assessment. According to Home Depot’s service page, the quote covers four parts: the product, basic installation, permits and code-required upgrades.

What Home Depot’s installation includes (per its US service page):

• Delivery of the new unit and haul-away of the old one
• Disconnection and removal of the existing heater
• Installation in the same unobstructed location, connecting venting, electrical, gas and water lines
• Leak testing, cycle testing and inspection
• Pulling permits and scheduling municipal inspections
• Cleanup

What may cost extra: chimney relining, electrical panel upgrades, gas line changes and other work needed to meet current code, which may need a custom estimate.

Other program details:

• Work is done by local, licensed and insured independent service providers that Home Depot authorizes.
• Same-day installation is offered Monday to Friday for requests made before noon, within 30 miles of a store, subject to availability.
• Home Depot says tank-to-tank swaps typically take 2 to 3 hours.
• A labor warranty is included. The service page references both one-year and “up to 3 years” coverage, so confirm the term on your contract.
• A price-match policy covers a lower written quote from a licensed, insured plumber for a like-for-like installation, subject to conditions.
• Special financing options are available.

How much does it cost? Using Home Depot data, This Old House reports an average installed cost of about $1,950 for a tank water heater and NerdWallet reports about $4,300 for tankless. Both figures include the unit, labor and typical extras. Basic 50-gallon electric tanks on Home Depot’s shelves start in the mid-$500s before installation.

Lowe’s water heater installation cost

Lowe’s also prices installation case by case. According to Lowe’s installation page, cost depends on the heater type, fuel source, and local labor and permit fees. Emergency (same-day) jobs and attic or crawlspace locations may cost more.

What Lowe’s installation includes (per Lowe’s):

• Free consultation, after which an independent installer quotes the job
• Delivery and installation of the new unit on the appointment day
• Disconnecting the old heater and a basic like-for-like replacement
• Permitting, unless local rules make it the homeowner’s job
• Testing, haul-away and disposal of the old unit, and jobsite cleanup

Key conditions:

• Installs are done by independent installers. Lowe’s publishes their license numbers by state.
• A one-year limited labor warranty is included. Protection plans are sold separately.
• Product and installation must be purchased together. Lowe’s won’t install a heater bought elsewhere.
• Same-day or next-day service is available only in select markets, for requests made Monday to Friday before noon.
• Tankless installation is offered only in select markets.
• Lowe’s advertises a “Lowest Install Project Price Guarantee” for qualifying lower estimates from comparable local retailers.

How much does it cost? Lowe’s doesn’t publish a set price. Independent estimates put a like-for-like 40–50 gallon tank swap through Lowe’s at roughly $900 to $2,000 installed, in line with national averages for plumber installs.

Big-box store vs local plumber

Neither option is automatically cheaper. Get a big-box quote and at least two local plumber quotes for the same scope, then compare line by line.

Regional differences in installation labor

Labor rates follow local wages and cost of living. Home Depot data reported by This Old House shows installed costs up to 45% above the national average in the Pacific Northwest, 10% to 20% above on the Gulf Coast, 5% to 10% below in the Mid-Atlantic and Midwest, and about 20% below in South Florida. HomeGuide notes that San Francisco, New York and Seattle are among the most expensive markets, and that rural jobs can carry travel surcharges.

How to save on water heater installation labor

• Keep it like-for-like. Same fuel, size and location keeps labor at the low end.
• Clear the area before the plumber arrives, and make sure there’s a clear path to haul the old tank out.
• Schedule ahead if your heater is aging, so you avoid emergency rates.
• Bundle jobs. If you need a new shutoff valve or a fixture repaired, do it on the same visit.
• Ask about price matching at Home Depot and Lowe’s, and bring competing written quotes.
• Look for rebates. The federal 25C tax credit ended for water heaters placed in service after December 31, 2025, so it doesn’t apply to 2026 installs. Some states offer heat pump water heater rebates of up to $1,750 through IRA-funded programs for income-qualified households. Many utilities also offer rebates.

Repair vs replace: is it worth paying for labor on a repair?

If your heater is under 6 to 8 years old and the problem is a part (element, thermostat, thermocouple, gas valve or anode), a repair costing a few hundred dollars is usually the better deal. If the tank itself leaks, the unit is past 10 years, or the repair would cost half the price of a new heater, replace it. See water heater repair cost and water heater lifespan for help deciding. If you’re seeing water on the floor, read water heater leaking first.

Can you install a water heater yourself to save on labor?

You can save $150 to $1,000, but consider the risks:

• Permits: Most jurisdictions still require one, and some restrict gas work to licensed plumbers.
• Gas and venting: Mistakes can cause gas leaks or carbon monoxide backdrafting.
• Electrical: Powering an electric tank before it’s full destroys the elements, and 240V wiring is dangerous.
• Code items: Expansion tanks, T&P discharge piping, straps and pans are easy to miss and can fail an inspection.
• Warranty: Some manufacturers’ warranties require professional installation.

A like-for-like electric swap is a reasonable DIY project for an experienced homeowner. For gas, tankless and heat pump units, hire a licensed pro.

How to hire a water heater installer

1. Verify the plumber’s license with your state or city licensing board, and confirm insurance.
2. Get at least three written quotes for the same scope, with the exact unit model listed.
3. Check recent reviews for water heater installs specifically.
4. Confirm the contractor pulls the permit and is present for (or arranges) the inspection.
5. Get the labor warranty term in writing.

Questions to ask about labor

• Is this a flat price or hourly? What could make it go up?
• Does the price include permit, haul-away, new connectors and valves?
• Will my home need an expansion tank, drain pan, seismic straps or vent changes, and are they included?
• For gas: will you leak-test and draft-test, and is the gas line sized correctly for the new unit?
• For electric or heat pump: is my existing circuit adequate, or will I need an electrician?
• How long is your workmanship warranty?
• Do you charge extra for same-day, evening or weekend service?

FAQs

What is the labor cost to install a water heater?

Labor for a standard tank water heater usually costs $150 to $1,000, with electric at the low end and gas at the high end. Tankless installs run $600 to $3,000 in labor because of gas line, venting and electrical work.

How much does a plumber charge to install a gas water heater?

For a like-for-like gas tank replacement, expect about $200 to $1,000 in labor. A new gas line ($350 to $2,000), venting changes ($100 to $1,500) or a chimney liner ($500 to $700) add to that.

How much does Home Depot charge to install a water heater?

Home Depot quotes each job after a consultation rather than charging a flat national fee. Home Depot data cited by This Old House shows an average total of about $1,950 for a tank water heater including the unit, and NerdWallet cites about $4,300 for tankless. Haul-away and permit handling are included in its service.

How much does Lowe’s charge to install a water heater?

Lowe’s prices installation by job, based on heater type, fuel and local permit and labor costs. Its service includes delivery, haul-away, permitting and a one-year labor warranty. Estimates for a standard 40–50 gallon swap typically land between about $900 and $2,000 installed.

Does Home Depot or Lowe’s install water heaters for free?

No. Both charge for installation. Occasionally promotions or financing offers reduce the effective cost, but labor, permits and code upgrades are priced into the quote.

How long does it take to install a water heater?

A like-for-like tank install takes about 2 to 4 hours. A new tankless gas unit takes 6 to 10 hours, and a tank-to-tankless conversion 8 to 12 hours.

Is installation included when you buy a water heater?

Not usually. Buying a heater online or in store covers only the unit unless you also purchase an installation service. Lowe’s requires the unit and installation to be bought together if it does the install.

Why is gas water heater labor more expensive than electric?

Gas installs involve disconnecting and reconnecting the gas supply, leak testing, inspecting and fitting the vent, and confirming proper draft. That’s more time, more skill and often a separate gas permit.

Can a handyman install a water heater?

In many states, water heater installation, and especially gas work, legally requires a licensed plumber and a permit. Check your state and local rules. A licensed plumber also protects your warranty and insurance.

Last updated: October 2026

Replacing a standard tank water heater usually costs $600 to $3,100 installed. Most homeowners pay about $1,300 to $1,950 on average for the unit, labor, permit and haul-away. A tankless unit runs $1,400 to $5,600 installed, and a hybrid heat pump water heater $2,000 to $4,600. The biggest swings come from fuel type (gas or electric), tank size, and any code upgrades your home needs to pass inspection.

Below you’ll find current price tables from national cost databases and retailer data, the add-on charges that turn a $1,200 quote into a $2,500 one, how prices vary by region, and when repairing your old unit is the better call.

Water heater replacement cost at a glance

These ranges cover the unit plus professional installation for a like-for-like replacement in the same spot. They combine figures published by HomeGuide, Angi/HomeAdvisor, Fixr, NerdWallet and This Old House (which uses Home Depot installation data) in 2025–2026.

Want the labor side broken down in more detail? See our water heater installation labor cost guide.

How much does a new water heater cost by type?

The type of heater you choose is the single biggest driver of your total. Here’s what the unit alone typically costs versus the installed price.

Unit-only and installed ranges come from HomeGuide (January 2026), with installed indirect and solar ranges cross-checked against Fixr and Angi. Lifespans are from Rheem and ENERGY STAR.

If you’re weighing an upgrade rather than a straight swap, our guides to tankless water heater cost, heat pump water heater cost and tankless vs tank water heaters go deeper.

Water heater replacement cost by tank size

Bigger tanks cost more to buy, and 75- and 80-gallon units are heavier and may need a second installer or floor reinforcement. Sources differ a little, so we show the overlap.

Ranges blend HomeGuide, Fixr and Angi data. Angi’s upper figure for 80-gallon installs reaches $7,500, which reflects premium heat pump or high-efficiency gas models.

The 50-gallon tank is the most common size in American homes. For model-by-model pricing see our 50-gallon water heater replacement cost guide. If you’re unsure whether to size up or down, read what size water heater do I need. Buying too small means running out of hot water, and buying too big means paying to keep extra water hot.

Gas vs electric water heater replacement cost

A like-for-like electric tank swap is usually the cheapest replacement. Gas units cost a bit more to install because the plumber also has to reconnect the gas supply, check the venting and test for leaks and proper draft.

Installed costs come from HomeGuide, Fixr and Angi. Running costs are estimates from HomeGuide and Fixr and depend heavily on local utility rates and how much hot water you use.

We cover fuel choice, conversion costs and running costs in our gas vs electric water heater replacement cost comparison.

Full cost breakdown: what’s in a water heater replacement quote

A good quote lists each of these items. If yours shows a single lump sum, ask the plumber to break it down so you can compare it with other bids.

1. The water heater itself

Expect to pay roughly $400 to $2,100 for a standard 40- or 50-gallon tank. Big-box retailer shelf prices for basic 50-gallon electric tanks currently start in the mid-$500s, and natural gas models start in the $700s. Longer warranties (9–12 years instead of 6), higher efficiency ratings and smart features push the price up.

2. Labor

Plumbers typically charge $45 to $200 per hour, with most tank swaps taking 2 to 4 hours. Total labor for a standard tank replacement usually lands between $150 and $1,000. Gas units sit at the higher end because of venting and gas work. Emergency, weekend and after-hours calls often add a 25% to 50% premium (HomeGuide).

3. Permits and inspection

Most US jurisdictions require a permit to replace a water heater, especially a gas unit. Fees usually run $25 to $300, but jobs that involve new gas lines or electrical work can need several permits. Fixr notes combined permit costs can reach $1,500 in some cases. Your plumber should pull the permit and schedule the inspection.

4. Removal and disposal of the old unit

Draining, disconnecting and hauling away the old tank costs $75 to $500 when it’s billed separately. Many plumbers, as well as Home Depot’s and Lowe’s installation programs, include haul-away in the base price.

5. Code upgrades

Codes have changed a lot over the life of a 10- or 12-year-old heater, so your replacement may need upgrades to pass inspection:

Ranges come from HomeGuide, This Old House (Home Depot data) and Angi.

6. Gas line and electrical work

• Gas line upgrade or new run: $260 to $2,000. A short extension is at the low end, and a new line from the meter is at the high end. Tankless gas units often need a larger 3/4-inch line.
• New dedicated 240V circuit: $250 to $900. You’ll usually need one when switching from gas to an electric tank or a heat pump unit.
• Electrical panel upgrade: $850 to $3,000. This only applies if your panel can’t handle the extra load, which is common with whole-home electric tankless.

7. Relocation or conversion

Moving the heater to a new spot costs $150 to $3,400, depending on how much pipe, venting and wiring has to be rerouted. Fuel switching typically costs $400 to $2,000+ for electric-to-gas and $250 to $1,000+ for gas-to-electric (HomeGuide). It can climb past $3,500 if you need a new gas service. Tank-to-tankless conversion adds $600 to $2,500 in labor on its own.

What makes water heater replacement cost more (or less)

• Like-for-like vs change: Same fuel, same size and same location is always the cheapest job. Changing any of those adds labor and materials.
• Access: Attic installs add $200 to $1,000. Tight closets and crawlspaces add time, and basement installs with stairs may need two people for an 80-gallon tank.
• Venting type: Atmospheric (standard) gas venting is cheapest. Power-vent units cost $300 to $600 more and need an outlet nearby. Direct-vent units need an exterior wall penetration.
• Age of the home: Older homes are more likely to need expansion tanks, new shutoff valves, flue repairs or gas line corrections to meet current code.
• Brand and warranty: Basic retail brands start around $350 to $1,000 for the unit. Contractor-grade lines from Rheem, A.O. Smith and Bradford White range up to $2,300 to $3,500 (Angi).
• Timing: A burst tank on a Sunday night costs more than a planned replacement on a Tuesday morning.
• Water damage: If the old tank leaked, drywall and flooring repairs can add $500 to $5,500+. Check our water heater leaking guide for what to do right away.

Water heater replacement cost by region and city

Labor rates and permit fees track local cost of living, so the same 50-gallon gas swap can cost hundreds more in a coastal metro than in the Midwest. Home Depot’s installation data, as reported by This Old House in 2026, puts regional prices relative to its ~$1,950 national average like this:

City-level averages compiled by Angi/HomeAdvisor and published by Bob Vila show the same pattern:

These city figures date from 2024 data, so treat them as relative guides and add a few percent for inflation. HomeGuide notes that San Francisco, New York and Seattle are among the most expensive markets. Rural areas can also run higher than you’d expect because of travel time and fewer contractors.

Ways to save on a water heater replacement

Check rebates, and know the federal tax credit has ended

The federal Energy Efficient Home Improvement Credit (Section 25C) used to cover 30% of the cost of a qualifying heat pump water heater, up to $2,000, and up to $600 for a qualifying high-efficiency gas, propane or oil water heater. The One Big Beautiful Bill Act, signed in July 2025, ended the credit for property placed in service after December 31, 2025, and the IRS describes it as applying to property placed in service from 2023 through 2025. A water heater installed in 2026 does not qualify. If yours was installed and working by December 31, 2025, you claim it on your 2025 return using Form 5695.

Other savings are still available:

• State home electrification rebates (HEEHRA/HEAR): These are funded by the 2022 Inflation Reduction Act and run by individual states. They can pay up to $1,750 toward a heat pump water heater for households earning up to 150% of area median income. Availability varies widely by state. Some programs are open, some have waitlists, and some states haven’t launched. Check your state energy office’s website.
• Utility rebates: Many electric and gas utilities offer rebates, often $100 to several hundred dollars and sometimes more for heat pump units. Search your utility’s website or the ENERGY STAR rebate finder.
• Manufacturer and retailer promotions: Seasonal sales and installation promotions at big-box stores can cut the unit price.

Other practical ways to cut the bill

• Replace before it fails. A planned replacement avoids emergency rates and water damage.
• Get at least three written quotes that list the unit model, permit, haul-away and code items.
• Stick with like-for-like unless an upgrade pays for itself. Switching fuel or moving the heater adds hundreds to thousands of dollars.
• Size correctly. A 40-gallon tank may be enough for a couple, while a family of five may need 50 to 65 gallons.
• Ask about price matching. Home Depot and Lowe’s both advertise installation price-match guarantees, with conditions.
• Maintain the new heater. Annual flushing and anode checks help it reach the long end of its lifespan. See how to flush a water heater.

Repair or replace your water heater?

Typical water heater repairs cost about $230 to $1,000, with many simple fixes (thermostat, heating element, gas valve or anode rod) at the low end. Our water heater repair cost guide has the details. Use these rules of thumb, drawn from Rheem’s guidance and the cost data above:

A leaking tank can’t be repaired. Once the steel lining corrodes through, replacement is the only fix. To estimate how much life your unit has left, see our water heater lifespan guide. Your heater’s age is usually encoded in the first characters of the serial number on the rating label.

DIY vs professional water heater replacement

Doing it yourself can save $150 to $1,000 in labor, but it’s not a casual weekend project, particularly with gas.

• Permits still apply. Most jurisdictions require a permit and inspection even for homeowner installs, and some only let licensed plumbers do gas work.
• Gas safety: Incorrect gas connections or venting can cause leaks or carbon monoxide backdrafting. If you’re not experienced with gas fittings, leak testing and draft testing, hire a pro.
• Electrical safety: Electric tanks run on 240V circuits. Turning on the power before the tank is full will burn out the heating elements instantly.
• Weight: A 50-gallon tank weighs over 100 pounds empty, and old tanks often hold sediment.
• Warranty and insurance: Some manufacturers require professional installation for full warranty coverage, and an unpermitted install can cause problems with insurance claims or when you sell the home.

A competent DIYer with plumbing experience can handle a like-for-like electric swap. For gas, tankless and heat pump units, or anything requiring new venting, wiring or gas lines, a licensed plumber is the safer and often legally required choice.

How to hire a plumber for water heater replacement

1. Check the license. Verify the plumber’s state or local license online, and confirm general liability insurance.
2. Get three itemized, written quotes. Each should list the exact make, model, capacity and warranty of the heater.
3. Read recent reviews on several platforms, looking specifically for water heater jobs.
4. Confirm who pulls the permit. It should be the contractor.
5. Get the labor warranty in writing. One year is common, and some installers offer more.

Questions to ask before you sign

• Does the price include the permit, inspection, haul-away and disposal?
• Will my home need an expansion tank, drain pan, seismic straps or venting changes to pass code? Are those in the quote?
• What brand and model are you installing, and what’s the tank and parts warranty?
• How long is your labor warranty?
• Will you set the thermostat to 120°F (the setting recommended by the DOE for most homes) and show me the shutoff valves?
• How soon can you do the work, and is there an extra charge for same-day service?
• What happens if you find a problem, like a corroded gas line or bad shutoff valve, once you start?

FAQs

How much does it cost to replace a water heater?

Most homeowners pay $600 to $3,100 to replace a standard 40- or 50-gallon tank water heater, with national averages reported between about $1,300 and $1,950. Tankless replacements cost $1,400 to $5,600, and hybrid heat pump units $2,000 to $4,600 installed.

How much does a new 50-gallon water heater cost installed?

A 50-gallon tank typically costs $700 to $3,100 installed. The unit alone is about $500 to $2,100. Electric models are usually cheaper to buy and install than gas, and heat pump models cost the most upfront.

Is it cheaper to replace a gas or electric water heater?

An electric tank is usually cheaper to replace ($600 to $1,900 installed) than a gas tank ($700 to $3,100), because there’s no venting or gas connection. Gas is often cheaper to run each month, though, depending on local utility rates.

How long does it take to replace a water heater?

A like-for-like tank replacement usually takes 2 to 4 hours. Home Depot quotes 2 to 3 hours for a tank-to-tank swap. Switching to tankless or changing fuel can take a full day or more.

How often should a water heater be replaced?

Tank water heaters typically last 8 to 12 years, and tankless units 15 to 20+ years. Hard water, lack of flushing and high thermostat settings can shorten that.

Does homeowners insurance cover water heater replacement?

Standard homeowners policies generally don’t pay to replace a heater that failed from age or wear. They may cover sudden water damage the leak caused. Policies vary, so check yours, and note that home warranty plans are separate products with their own limits.

Is there a tax credit for a new water heater in 2026?

No federal tax credit is available for water heaters installed in 2026. The 25C credit, worth up to $2,000 for heat pump water heaters, ended for property placed in service after December 31, 2025. State rebates and utility incentives may still be available.

Do I need a permit to replace a water heater?

In most US cities and counties, yes, especially for gas water heaters. Permits typically cost $25 to $300, and a licensed plumber will usually pull it for you and arrange the inspection.

Should I replace my water heater before it breaks?

If your tank is past 10 years old, planning a replacement is often smart. You avoid emergency service premiums, water damage and days without hot water, and you have time to compare quotes.

Why do water heater quotes vary so much?

Quotes differ by the brand and warranty of the unit, local labor rates, whether permit and haul-away are included, and whether the plumber has priced in code upgrades like an expansion tank or venting changes. Itemized quotes make the differences clear.