Water Heater Replacement Cost in 2026: Tank vs. Tankless
Replacing a water heater costs $1,200–$2,500 for a tank model and $2,200–$5,000+ for tankless in 2026. Compare efficiency, lifespan, and long-term value with our calculator.
Water heater replacement cost calculator
Compare installed cost ranges by water heater type.
Ranges include unit + standard installation at 2026 national-average rates. Gas-line, venting, or electrical upgrades for tankless retrofits can add $500 – $2,000+.
Replacing a water heater is one of the most common plumbing projects in American homes. In 2026, a standard tank water heater replacement costs $1,200 – $2,500 installed, while a tankless system runs $2,200 – $5,000+. Tankless costs more upfront but lasts longer and uses less energy.
Water heater replacement cost by type
| Type | Typical installed range | Lifespan |
|---|---|---|
| Tank (gas or electric) | $1,200 – $2,500 | 10 – 12 years |
| Tankless (gas or electric) | $2,200 – $5,000+ | 20 – 30 years |
| Heat pump (hybrid) | $3,000 – $4,500 | 10 – 15 years |
Tank vs. tankless: the real trade-off
- Upfront cost: tank wins — roughly half the installed price of tankless.
- Energy use: tankless units are 85–95% efficient vs. ~60–65% for tanks, cutting water-heating energy use by roughly 25–40% per year.
- Lifespan: a tankless unit can last two to three times longer than a tank, which narrows the lifetime cost gap.
- Hot water supply: tanks store 40–50 gallons; tankless heats on demand, so it never "runs out" — but it needs proper sizing for simultaneous showers and appliances.
Hidden costs to budget for
- Venting and gas lines: switching to tankless often requires upgraded venting or a larger gas line — especially in homes over 10 years old.
- Electrical work: electric tankless units may need a panel or circuit upgrade.
- Permits and disposal: most areas require a permit and inspection; hauling away the old unit typically adds $50 – $100.
Estimate disclaimer: Figures on this page are 2026 US national-average planning ranges, not contractor quotes. Your actual price will vary by region, fuel type, installation complexity, and contractor. Always get written quotes from licensed plumbers in your area.
Cost data sources: Fields & Fowler (tank vs. tankless cost comparison), Fixr (tank vs. tankless comparison), ElectronicsAndYou (2026 US water heater costs). Compiled September 2026.