Water Heater Replacement Cost: Tank vs Tankless Prices in 2026

No hot water, a puddle under the tank or a 12-year-old heater that rumbles every morning usually leads to one question: how much will a new one cost? For a standard 40- or 50-gallon tank, most homeowners pay $1,200 to $3,000 installed. Tankless and heat pump models cost more, usually $2,500 to $5,500.

This short guide breaks down the water heater replacement cost by type, size and fuel, explains the extras that show up on quotes, and answers the questions homeowners ask most.

How Much Does It Cost to Replace a Water Heater?

National cost data puts the average installed price around $1,400, with most jobs between $900 and $3,000. Big-box store installs average higher, about $1,950 for a tank and $4,300 for tankless, because they include more code upgrades. Prices have also risen since 2025, as manufacturers passed on tariff costs with increases of roughly 6–9%.

Type	Installed price (2026)	Lifespan
Electric tank	$1,000 – $2,500	10–15 years
Gas tank	$1,300 – $3,000	8–12 years
Tankless gas	$2,500 – $5,500	15–20+ years
Tankless electric	$1,500 – $4,000	15–20 years
Heat pump (hybrid)	$2,500 – $5,000	12–15 years

Price by Tank Size

Size	Installed price	Good for
30 gallon	$550 – $2,100	1–2 people
40 gallon	$550 – $2,300	2–3 people
50 gallon	$700 – $2,500	3–5 people
75–80 gallon	$1,100 – $3,600	Large households

Gas units and jobs that need code upgrades usually land in the upper half of these ranges.

Gas vs. Electric

Gas tanks cost more to install because they need a gas connection and venting, but they heat water faster. Electric tanks are cheaper to install and last a bit longer. Staying with the fuel you already have is almost always cheaper; switching adds a gas line or a new 240-volt circuit, often $500–$3,000.

Tankless and Heat Pump Options

• Tankless: replacing an old tankless unit runs about $2,000–$4,000. Switching from a tank to tankless often costs $3,500–$6,500 because of a larger gas line, new venting or electrical work.
• Heat pump: uses about a third of the electricity of a standard electric tank. It may need a condensate drain and enough open air around it.
• Tax credit update: the federal 25C credit ended for units installed after December 31, 2025. Utility rebates ($300–$1,000) and some state programs still help; check your utility’s site before buying.

Labor and Extra Costs

A straight tank swap takes a plumber about 2–4 hours, and labor usually runs $300–$800. Tankless labor is often $600–$1,900. These extras explain most of the difference between quotes:

Item	Typical price
Haul-away of old unit	$0 – $150 (often included)
Permit and inspection	$25 – $300
Expansion tank	$150 – $400
Drain pan, straps, relief valve line	$50 – $400
Gas line or venting changes	$300 – $1,000+
New electrical circuit	$300 – $3,000
Attic or hard-to-reach install	$200 – $800 extra
Emergency or weekend service	$100 – $500 extra

How to Estimate Your Water Heater Replacement Cost

1. Unit price: about $500–$1,600 for a tank, $1,000–$3,000 for tankless or heat pump.
2. Labor: $300–$800 for a like-for-like tank, more for tankless.
3. Code parts and permit: $150–$600.
4. Changes or access: fuel switch, relocation, attic or emergency service.

Example: a 50-gallon gas tank swapped in a garage: about $1,100 for the unit, $500 for labor and $300 for parts and permit, or roughly $1,900 total.

Repair or Replace?

A thermocouple, heating element, thermostat or anode rod usually costs $150–$350 to fix. Replace the heater instead when the tank itself leaks, it’s over about 10 years old, the repair costs more than half the price of a new one, or you’re getting rusty water.

Find Water Heater Replacement Companies

Search for water heater installers in your area, compare reviews and request free quotes. Mention the heater type, fuel, size and where it’s installed so the quotes are accurate.

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Questions and Answers

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

Most homeowners pay $1,200–$3,000 for a 40- or 50-gallon tank, installed. Tankless and heat pump units usually cost $2,500–$5,500.

What’s the average water heater replacement cost?

The national average is roughly $1,400–$2,000 for a standard tank, depending on whether permits, code parts and haul-away are included.

How much is labor to install a new water heater?

About $300–$800 for a like-for-like tank and $600–$1,900 for tankless. Labor is often more than half the bill on simple jobs.

How much is a 50-gallon water heater installed?

About $1,300–$2,800 for gas and $1,100–$2,300 for electric. A 50-gallon heat pump model usually costs $2,500–$4,500.

How much is a 40-gallon water heater installed?

About $1,200–$2,500 for gas and $1,000–$2,100 for electric. Moving up to 50 gallons often adds only $100–$300.

Why is a gas water heater more expensive to replace?

Gas units need a gas connection, venting and combustion checks, which add labor and parts compared with an electric tank.

Is the water heater replacement cost higher for tankless?

Yes, especially when switching from a tank. The unit costs more, and gas tankless models often need a larger gas line and new venting.

How long does it take to replace a water heater?

About 2–4 hours for a standard tank. Tankless conversions or relocations can take a full day.

Do I need a permit to replace a water heater?

In most places, yes. Licensed plumbers usually pull the permit and include the fee in the quote.

How long do water heaters last?

Gas tanks last about 8–12 years, electric tanks 10–15, heat pumps 12–15, and tankless units 15–20 years or more.

Does homeowners insurance pay for a new water heater?

Usually not for one that wears out with age. Insurance may cover sudden water damage from a burst tank, but not the heater itself.

The Bottom Line

For most homes, the water heater replacement cost is $1,200–$3,000 for a standard tank and $2,500–$5,500 for tankless or heat pump models. Stay with the same fuel and location when you can, compare quotes line by line, and replace an aging tank before it leaks.

About This Guide

Written by Saba A and reviewed by the Repairior Editorial Team using 2026 national cost data, manufacturer pricing announcements and federal tax guidance. Prices are typical ranges, not quotes; your cost depends on your home and local rates. Businesses can’t pay to change our cost guides.