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Get a fair quoteBy Our research team · Last verified · 13 jobs priced · Methodology
Tank water heater replacement, 40–50 gal. The full price list is below.
How we get this data$800–$3,100 to replace a 40–50 gallon tank water heater in 2026, installed, and $1,800 is typical. Electric tanks run $800–$2,500, gas tanks $1,100–$3,100. The usual extras are haul-away ($75–$400), a permit ($50–$300) and an expansion tank ($100–$400) if your home needs one.
Prices verified November 2026 · Cross-referenced against 36+ American pricing sources · See methodology
A standard swap costs $800–$3,100. The add-ons below are what turn a $1,800 quote into a $3,100 one.
| Job | Low | Typical | High |
|---|---|---|---|
| Tank water heater replacement, 40–50 galinstalled | $800 | $1,800 | $3,100 |
| Electric tank, 40–50 galinstalled | $800 | $1,500 | $2,500 |
| Gas tank, 40–50 galinstalled | $1,100 | $2,000 | $3,100 |
| Large tank, 75–80 galinstalled | $1,200 | $2,400 | $4,000 |
| Tank water heater, unit only (40–50 gal)unit only | $450 | $800 | $2,000 |
| Old tank haul-away and disposalper job | $75 | $200 | $400 |
| Permit and inspectionper job | $50 | $125 | $300 |
| Expansion tankinstalled | $100 | $250 | $400 |
| Seismic strapping (California and quake zones)installed | $100 | $200 | $300 |
| Venting upgrade or power-vent conversion (gas)per job | $300 | $800 | $1,500 |
| Gas-to-electric switch: new 240V circuit (long run to the heater)per job | $300 | $700 | $2,000 |
| Emergency same-day replacement, 40–50 gal tankinstalled | $1,000 | $2,150 | $3,600 |
| Water heater repair (element, thermostat, igniter, gas valve)per job | $150 | $450 | $700 |
US prices, November 2026. Low is a simple job in a low-cost area; high is a bigger job or a high-cost city.
Yes. The same job costs more where labor and rent cost more. Here's how water heater prices in the biggest US metros compare with the US typical of $1800.
Labor, rent and demand move every job on this page in the same direction. Open your city's guide for its full local price list.
Replace the water heater if the tank itself is leaking. A leak from the tank body can't be fixed. A failed part on a sound tank can: a new element, thermostat, igniter or gas valve costs $150–$700.
A simple rule: if the tank is past about 10 years old, or the repair costs more than half of a new install ($900 at the typical price), replace it. Rusty hot water, rumbling and a damp base are signs the tank is near its end.
A quote of $800–$3,100 normally covers the new tank, a licensed plumber for two to four hours, draining and removing the old tank, new water connectors, a new gas flex line or electrical hookup, the relief-valve drain pipe and a test run.
The tank is only part of it. A 40–50 gal tank costs $450–$2,000 on its own; labor, fittings, the permit and haul-away make up the rest. Gas tanks cost more to install than electric ($2,000 vs $1,500 typical) because of the venting and gas connection.
Haul-away and disposal of the old tank costs $75–$400 when it's charged separately. Many plumbers include it, so ask before you compare quotes.
Most US cities require a permit and inspection for a water heater swap. Expect $50–$300. Some real fees: New York City charges a flat $130, Chicago $75, and Phoenix starts at $75. Denver issues a quick permit for about $25–$50. Your plumber normally pulls it.
An expansion tank ($100–$400) gives heated water room to expand. Inspectors usually ask for one when your home has a pressure-reducing valve, check valve or backflow preventer on the water line, because the extra pressure has nowhere else to go.
Other common add-ons: a drain pan under tanks in attics or upstairs closets, earthquake straps in California and other quake zones ($100–$300), and new venting on older gas installs ($300–$1,500). Each one should be its own line on the quote.
Replace before it fails. A booked swap at $1,800 costs less than a same-day emergency job at $2,150, and you avoid water damage. Stay with the same fuel and size: switching from gas to electric adds $300–$2,000 for a new circuit.
Get two itemized quotes. Prices for the same swap range from $800 to $3,100, and itemized quotes show whether haul-away, the permit and code fixes are included.
A like-for-like electric swap in a garage comes to about $1,625 with the permit. It's the cheapest kind of job: same spot, same size, same fuel.
Typical US prices. If haul-away is billed on its own, add $75–$400. Labor costs more in big cities; see Los Angeles or New York for local prices.
A gas swap with code fixes can reach about $3,575, almost double the base price. This one is an older gas install in a California closet, where the inspector wants the setup brought up to code.
Not every home needs every line. Ask the plumber which code fix is needed and why. Each one should be its own line on the quote.
Most inspections look at the same five things. Each one can add to the bill when your home needs it.
| Item | What it does | When it's needed | Typical price |
|---|---|---|---|
| Relief valve and its drain pipe | Lets water out if the tank gets too hot or the pressure gets too high. The pipe carries that water down to a safe spot. | Every tank. | Part of the install |
| Expansion tank | Gives heated water room to expand. | When a valve on your water line stops water from flowing back to the street. | $250 |
| Earthquake straps | Hold the tank to the wall so it can't tip over. | Required by state law in California, on new and existing tanks. Some other quake areas ask for them too. | $200 |
| Vent pipe (gas only) | Carries exhaust gas out of the home. | When the old pipe is rusted, the wrong size or not up to code. | $800 |
| Drain pan | Catches a slow leak before it soaks the floor. | Often asked for when the tank sits in an attic, an upstairs closet or over a finished room. | Ask for a line price |
Your plumber pulls the permit in most cities. The fee is $50–$300.
A home where three people shower in the same hour needs about 65 gallons of hot water in that hour. Pick a tank whose first-hour rating (how many gallons it can deliver in one busy hour) is at least that. The rating is on the yellow EnergyGuide label, top left. Here's the Department of Energy's method with its per-use numbers.
| Use | Gallons each time | Times in your busiest hour | Gallons |
|---|---|---|---|
| Shower | 20 | 3 | 60 |
| Shaving | 2 | 1 | 2 |
| Washing dishes by hand | 3 | 1 | 3 |
| Dishwasher | 7 | 0 | 0 |
| Top-loading washer | 25 | 0 | 0 |
| Total for this home | 65 |
Tank size in gallons is not the same as the first-hour rating. Two 50-gallon tanks can have very different ratings, so compare the label. Our water heater size calculator does this math for you.
Shut off the water first. Most of the damage from a leaking tank comes from water left running.
One vague price for the whole job is the biggest warning sign. Watch for these too.
A new gas or electric tank gets no federal tax credit in 2026. Some high-efficiency gas water heaters could get up to $600 under the 25C credit, but it ended for units placed in service after December 31, 2025. Some utilities still pay rebates, mostly for heat pump models. See our heat pump water heater guide.
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Usually, but not always. When it's charged separately, haul-away and disposal cost $75–$400. Ask for it on the written quote.
In most US cities, yes. Fees run $50–$300. New York City charges a flat $130 and Chicago $75. A licensed plumber usually pulls the permit and books the inspection.
When your water system is closed, meaning a pressure-reducing valve, check valve or backflow preventer stops expanding water from pushing back into the main. Adding one costs $100–$400.
Repair a tank under about 8 years old with one failed part ($150–$700). Replace it if the tank leaks, it's past about 10 years, or the repair would cost more than half of a new install.
Two to four hours for a like-for-like tank swap. Moving the tank, switching fuel or going tankless takes longer and costs more: whole-home tankless gas runs $2,000–$5,600.
$800–$3,100 installed, and $1,800 is typical. A 50-gallon electric tank runs $800–$2,500. A gas one runs $1,100–$3,100.
You can buy the tank alone for $450–$2,000. But most cities need a permit, and gas and electrical work is licensed work in most places. A mistake with the gas line, vent or relief valve can cause a gas leak, a fire or a burst tank. Most people hire a licensed plumber.
It depends on your busiest hour, not on how many people live there. If three people shower in the same hour, you need about 65 gallons in that hour. Pick a tank with a first-hour rating of at least that; it's on the yellow EnergyGuide label. Try our size calculator.
No federal credit. The 25C credit ended for units placed in service after December 31, 2025. For heat pump models, many utilities and some states still pay rebates.
A tank usually lasts about 8–12 years. A yearly flush and a new anode rod ($150–$350) can help it last longer. Tankless units often last 20 years or more.