Water heating
Water Heater Installation Cost Calculator
Estimate the installed cost of replacing a water heater — by fuel (gas / electric / propane), tank size (40 / 50 / 80 gallon), and efficiency tier. Calibrated to your state's labor rates and energy prices. For heat-pump or tankless water heaters, see the dedicated calculators linked below.
Quick answer: standard tank $1,200–$2,800 installed; 75/80-gallon high-capacity $1,500–$3,500; heat pump water heater $2,200–$4,200; tankless $3,000–$8,500. Permit adds $75–$300.
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).
Which water heater type is right for you?
This calculator covers standard tank water heaters. Three other types are worth comparing before you replace:
- Heat pump water heater (HPWH): 1/3 the energy use of a standard electric tank. Higher upfront ($2,200–$4,200) but cheapest to run. HPWH calculator →
- Tankless (on-demand): endless hot water, 20+ year lifespan, but $3,000–$8,500 installed and needs gas-line / venting upgrades. Tankless calculator →
- Standard tank (this page): cheapest to install, 10–12 year lifespan, simplest swap. The default for most direct replacements.
Frequently asked questions
How much does water heater installation cost in 2026?
A standard tank water heater runs $1,200 to $2,800 installed nationally. A 75- or 80-gallon high-capacity tank runs $1,500 to $3,500. A heat pump water heater runs $2,200 to $4,200. A tankless (on-demand) unit runs $3,000 to $8,500. The biggest cost drivers are tank size, fuel type (gas vs electric vs propane), venting requirements, and whether a new circuit or gas line is needed. Use the calculator above to refine for your fuel, size, and tier.
How much does a 75 or 80 gallon water heater cost installed?
A high-capacity 75- or 80-gallon tank water heater runs $1,500 to $3,500 installed for gas or electric. The larger tank itself costs $1,100 to $2,000 (gas) or $900 to $1,800 (electric); installation labor adds $500 to $1,600 depending on whether the existing connections, venting, and space accommodate the larger unit. Many homes that "need" an 80-gallon tank are better served by a 50-gallon heat pump water heater, which delivers equivalent first-hour rating at lower operating cost.
What type of water heater is cheapest to install vs. cheapest to run?
Cheapest to install: a standard atmospheric-vent gas or electric tank ($1,200 to $2,500). Cheapest to run: a heat pump water heater, which uses about 1/3 the energy of a standard electric tank. The HPWH costs more upfront ($2,200 to $4,200 installed) but the operating-cost savings typically pay back the premium in 3 to 5 years for a 4-person household. Tankless units cost the most to install but last 20+ years vs. 10 to 12 for a tank.
Do I need a permit to replace a water heater?
Yes, in nearly every U.S. jurisdiction. A water heater replacement is permitted plumbing (and electrical, for electric units) work. The permit triggers an inspection that confirms correct venting, temperature-and-pressure relief valve, seismic strapping (in earthquake zones), expansion tank, and gas-line or electrical-circuit sizing. Permit fees typically run $75 to $300. An unpermitted install can void your homeowner insurance and complicate a home sale.
What rebates apply to water heater installation?
For standard gas or electric tanks: generally none, since they are not high-efficiency. For heat pump water heaters: the federal 25C credit (which covered HPWHs up to $2,000) expired Dec 31 2025 under OBBBA, but DOE HEEHRA provides up to $1,750 for HPWHs in income-qualified households where the state has launched the program, plus state and utility rebates. See /rebates/ for the full list and /heat-pump-water-heater-cost-calculator/ for HPWH-specific estimates.