Tank water heater
Tank Water Heater Replacement Cost Calculator
Installed-cost estimate for standard tank water heater replacement by fuel, efficiency tier, and size. Compares head-to-head with HPWH and tankless.
Quick answer: standard atmospheric-vent 50-gal gas tank installs for $1,300–$2,700. Condensing gas $3,000–$5,000. Electric resistance $1,200–$2,500. HPWH alternative: $2,300–$4,200 with HEEHRA up to $1,750.
Optional — auto-sets state
Installed cost · Atmospheric-vent 0.62 UEF 50-gal · Ohio
$1,934
range $1,265 – $2,974
Annual operating cost
$231/yr
UEF 0.62
HPWH alternative
$3,100
Saves $5/yr op
Cost breakdown
- Equipment (50 gal)$1,000
- Install + venting$784
- Permit & inspection$150
- Total (mid)$1,934
Three-way comparison
- Standard tank (this calc)$1,934
- HPWH (50-gal hybrid)$3,100
- Tankless gas$4,300
HPWH typically saves $300-500/yr in operating cost vs gas tank; HEEHRA rebate up to $1,750 for income-qualified buyers.
Quote check — what to ask
- · UEF (Uniform Energy Factor) in writing — replaces older EF rating.
- · Expansion tank included (required by most codes since 2012).
- · T&P (temperature/pressure) valve and drip pan included.
- · Sediment trap on gas line, dielectric unions on water lines.
- · Old unit haul-away included.
- · Combustion-air check (CO test) at startup for atmospheric-vent gas.
- · 6+ year tank warranty (premium tier offers 12 years).
New to water heater replacement?
A standard tank water heater stores 30–80 gallons of hot water and reheats it as you use it. Gas units burn natural gas (or propane) and vent up a flue; electric units use one or two resistance elements. Lifespan is 8–14 years; sediment in hard-water areas is the chronic failure point. Modern alternatives — heat pump water heaters and tankless — cost more upfront but pay back through 50–70% lower operating costs.
Frequently asked questions
How much does a standard tank water heater cost installed?
A standard 50-gal atmospheric-vent gas tank installs for $1,300–$2,700. Power-vent gas runs $2,000–$3,800. Condensing gas (95%+ EF): $3,000–$5,000. Electric resistance 50-gal: $1,200–$2,500. Propane tracks gas pricing plus 10–20%. The cheapest replacement is electric-for-electric or gas-for-gas like-for-like.
Tank vs heat pump water heater (HPWH) vs tankless — which makes sense?
Standard tank wins on upfront cost ($1,500–$3,000 installed for typical gas). HPWH wins on long-run economics ($2,300–$4,200 installed, $300–$500/yr operating savings vs gas, eligible for HEEHRA up to $1,750). Tankless wins on space + endless hot water ($2,800–$6,500). A standard tank is the right replacement when budget is the binding constraint or you turn around the house soon.
Is the 25C tax credit available for tank water heaters in 2026?
No. The federal 25C credit for high-efficiency gas water heaters (was 30% up to $600) expired Dec 31 2025. HEEHRA is electric-only — tank gas/propane do not qualify, only HPWH and electric resistance do. Some utilities still offer $50–$300 rebates on condensing tank installs.
How long does a tank water heater last?
Industry average: 8–12 years for gas, 10–14 for electric resistance. Hard water shortens life significantly — sediment buildup wears the bottom of the tank. Annual flushing extends life. Premium models (Bradford White, Rheem ProTerra) carry 6–8 year warranties; budget tier carries 6 years.
What size tank do I need?
Rule of thumb: 30–40 gal for 1–2 people, 40–50 gal for 3–4, 50–60 gal for 4–5, 75–80 gal for 5+. First-hour rating (FHR) on the spec sheet is the real number — should match your peak hour usage (~12 gal/person/hour for showers).