Water Heater Replacement Cost
Updated October 2026
Replacing a water heater costs $874–$5,400 installed, with a national average around $1,400. A like-for-like 50-gallon gas swap sits near the middle at $700–$2,500; going tankless or heat-pump pushes the top end to $4,000–$4,600. Every figure below is a national band from our cited dataset — sources listed at the end.
Water heater replacement cost by type
The appliance you replace matters more than the size. A 40- and 50-gallon tank price inside a narrow band, while tankless and heat-pump units roughly double the typical figure. All rows are installed — equipment plus labor, standard reconnects and haul-away, with the permit included on like-for-like gas swaps.
| Replacement | Installed cost (low–typical–high) | Source detail |
|---|---|---|
| 40-gallon tank | $550–$1,200–$2,300 | Fixr $550–$2,300 · TOH $600–$1,200 · HomeAdvisor $800–$2,300 |
| Electric tank (any size) | $500–$1,600–$3,500 | Cheapest to install; top end includes 240V circuit/panel work |
| Gas tank (any size) | $700–$1,700–$2,700 | Three-source exact agreement; venting and gas-line condition drive it |
| 50-gallon tank | $700–$1,800–$2,500 | Fixr $700–$2,500 · TOH $700–$1,800 · HomeAdvisor $800–$2,500 |
| Tankless (whole house) | $1,000–$2,800–$4,000 | GPM sizing, gas-line upgrade and venting drive the spread |
| Heat pump / hybrid | $1,200–$3,000–$4,600 | Needs clearance + condensate; rebates can offset the top end |
Type-by-type rows keep each publisher's band separate — never averaged. The gas row is a three-source exact agreement; the 40- and 50-gallon rows show each guide's range in the table above. All rows are national installed ranges, not contractor quotes.
40 vs 50 gallon replacement cost
A 50-gallon tank swap runs $700–$2,500 installed (about $1,800 typical) — Fixr bands it $700-2,500, TOH $700-1,800 and HomeAdvisor $800-2,500. A 40-gallon swap prices a little lower at $550–$2,300 ($1,200 typical). The gap between them is small: 40 vs 50 gallons is a sizing decision, not a price cliff. Step up to the 75–80 gallon class before cost really moves.
Gas vs electric replacement cost
Electric is cheaper to install — $500–$3,500 (about $1,600 typical) — because there's no venting or gas-line work, though 240V circuit or panel work can push the top end. Gas runs $700–$2,700 (about $1,700 typical) and carries vent-type risk: atmospheric chimney venting is the baseline, while power-vent and condensing side-wall venting add work. Fuel is usually set by what the house already has; switching fuel is a conversion and prices like one.
Tankless and heat-pump replacement cost
A whole-house tankless replacement runs $1,000–$4,000 installed (about $2,800 typical) — roughly $1,100 more than a gas tank at the typical point. GPM sizing, a possible gas-line upgrade and venting drive the spread. A heat pump / hybrid replacement runs $1,200–$4,600 installed (about $3,000 typical), roughly $1,300 above a gas tank before rebates. It needs airflow clearance and a condensate path, plus a 240V circuit when converting from gas.
Labor, permit, removal and the expansion tank
The installed band already bundles these, but seeing them separately explains the spread:
| Line item | Band (low–typical–high) | Note |
|---|---|---|
| Install labor (tank-style) | $150–$450–$1,500 | BobVila/HomeAdvisor $150–$450 (tank); Fixr general ceiling $1,500 |
| Permit / inspection | $25–$100–$300 | TOH $50–$200 · BobVila/HomeAdvisor $25–$300 |
| Old-unit removal / disposal | $100–$200–$500 | TOH $100–$300 · BobVila $100–$500 |
| Expansion tank (add-on) | $40–$95–$150 | Required by some municipalities — single-publisher band (flagged) |
The expansion-tank row is single-publisher (flagged in our dataset); the labor row is the tank-style band — tankless labor runs higher. Permit fees are jurisdiction-dependent.
Repair or replace?
- Age. Tanks last 8–15 years; past that band, a like-for-like swap ($700–$2,500 for a 50-gallon gas unit) usually beats repeated repairs.
- A leaking tank is not repairable. A shell leak means replacement; repair only fits serviceable parts (valve, element, thermostat, anode).
- Code upgrades at swap. Drip pan, seismic strapping, expansion tank and TPR discharge piping ($40–$150) are commonly required during replacement — budget for them.
- Efficiency upgrades. If you're replacing anyway, a heat pump ($1,200–$4,600) or tankless ($1,000–$4,000) is the moment to switch — the marginal cost is lower than a later conversion.
Frequently asked questions
How much does it cost to replace a water heater?
A typical replacement runs $874–$5,400 installed, with a national average around $1,400 (Fixr). HomeAdvisor's most-common band is $882–$1,826 and BobVila runs $874–$1,765; the high end reflects tankless and heat-pump conversions. Fuel and type move the number more than anything else.
How much is a 50-gallon water heater replacement?
A 50-gallon tank swap runs $700–$2,500 installed (about $1,800 typical). A 40-gallon unit prices slightly lower at $550–$2,300. Both include equipment, labor, standard reconnects, haul-away, and — for like-for-like gas swaps — the permit.
Is it cheaper to replace with gas or electric?
Electric is cheaper to install: an electric tank replacement runs $500–$3,500 (about $1,600 typical), because there's no venting or gas-line work. Gas runs $700–$2,700 (about $1,700 typical) and carries vent-type risk. Fuel is usually dictated by what the house already has — switching is a conversion and prices like one.
How much does tankless replacement cost?
A whole-house tankless replacement runs $1,000–$4,000 installed (about $2,800 typical) — roughly $1,100 more than a gas tank at the typical point. GPM sizing, a possible gas-line upgrade and venting drive the spread.
How much is a heat-pump water heater replacement?
A heat pump / hybrid replacement runs $1,200–$4,600 installed (about $3,000 typical) — about $1,300 more than a gas tank at the typical point — before rebates. It needs clearance and a condensate path, plus a 240V circuit when converting from gas.
What's included in the replacement price?
The installed band covers the equipment plus labor ($150–$1,500 for tank-style work), a permit ($25–$300), haul-away of the old unit ($100–$500), and standard venting/line reconnects. An expansion tank, where code requires one, adds $40–$150.
Should I repair or replace my water heater?
Age is the main trigger: tanks last 8–15 years, and once a unit is past its band a like-for-like replacement ($700–$2,500 for a 50-gallon gas swap) usually beats repeated repairs. For a tank leaking from the shell, replacement is the only option — leaks aren't repairable.
How long does a replacement last?
A conventional tank lasts 8–15 years depending on type and water conditions; tankless and heat-pump units generally run longer. Sizing and maintenance matter more than brand — see the full guide for the type-by-type breakdown.
Sources
- Fixr - How Much Does Water Heater Installation Cost in 2026? — manual, reliability: high
- Fixr - Cost to Replace a 40-Gallon Water Heater in 2026 — manual, reliability: high
- Fixr - 50-Gallon Water Heater Installation Cost in 2026 — manual, reliability: high
- This Old House — How Much Does Water Heater Installation Cost? — scrape, reliability: high
- BobVila — Water Heater Installation Cost — scrape, reliability: high
- HomeAdvisor — Water Heater Replacement Cost — scrape, reliability: high
Estimate only — get local written quotes. Figures are national installed ranges from public cost guides (Fixr, HomeAdvisor, This Old House, BobVila) as of October 2026, not verified contractor pricing. The expansion-tank row is single-publisher; per-source bands are kept separate, never averaged. Related: the water heater cost hub and the full water heater cost guide — or run your numbers in the water heater replacement cost calculator.