Water Heater Replacement Cost (2026)
By the Home Repair One data team · Updated July 2026 · Ranges from our estimator engine
Short answer: In 2026, replacing a standard tank water heater runs about $1,200–$2,500 installed, including the unit, labor, and any code upgrades. A tankless upgrade costs more up front but delivers endless hot water, uses less energy, and lasts 20+ years versus 10–12 for a tank. Fuel type (gas or electric), tank size, difficult placement, and required upgrades like an expansion tank move the number. Repairs to a newer tank, a thermostat, element, or valve, are far cheaper, but past 10–12 years or with a leaking tank, replacement is the smarter spend.
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Water heater cost by scope
Here's the 2026 national picture, from a repair on a newer unit to a full replacement, computed from our cost model. Run the estimator for a range tuned to your ZIP.
| Scope | Typical range |
|---|---|
| Repair the existing | $750–$1,100 |
| Replace / install new | $1,350–$2,000 |
| Major / whole-system | $2,600–$3,850 |
Tank vs. tankless
A tank heater is cheaper to install and simpler to service but holds a limited supply and lasts 10–12 years. Tankless costs more up front, but it heats on demand for endless hot water, uses less energy, saves space, and lasts 20+ years. In a home with high hot-water demand, tankless often wins over its longer life.
Fuel matters too: gas units cost more to install than electric but usually cost less to run, and switching fuel types adds venting or electrical work.
Repair or replace?
If a tank is under about 8 years old and the failure is a thermostat or heating element, repair it, those are cheap fixes. Past 10–12 years, or if the tank itself is leaking, replace it: a leaking tank only gets worse and risks a flood.
What changes your price
- Tank versus tankless, tankless costs more up front, lasts longer.
- Fuel type (gas or electric) and any fuel-switch venting or wiring.
- Tank size and household hot-water demand.
- Difficult location, expansion tank, and code upgrades on swap-out.
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FAQ
How much does a water heater cost to replace?
A standard tank replacement runs $1,200–$2,500 installed; tankless costs more but lasts longer. Fuel type, size, and code upgrades move the number.
How long does a water heater last?
A tank lasts about 10–12 years; tankless 20+. Annual flushing to clear sediment extends a tank's life and keeps efficiency up.
Is tankless worth the extra cost?
In homes with high or simultaneous hot-water demand, tankless pays back through endless hot water, lower energy use, and a longer life. In a small, low-demand home, a tank is often the better value.