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Water Heater Replacement Cost Calculator
Water heater replacement costs $500–$3,800 installed in 2026, depending on type. A gas tank runs $750–$1,550; an electric tank $650–$1,400; a heat pump water heater $1,100–$2,600; tankless gas $950–$3,800. The federal 25C tax credit ended after Dec 31, 2025 — check DSIRE for state and utility rebates. Use the calculator below for a figure matched to your home.
Educational calculators — always consult a licensed professional before making financial decisions.
Most common type. Fast recovery, lower operating cost than electric. Requires gas line and venting.
Most common size. Suitable for 3–4 person households with average hot water demand.
Mid-tier models from Bradford White, Rheem, or A.O. Smith. Better longevity; 9–12 year warranty.
Most mid-size US cities. Labor rates $55–$80/hr.
Approaching end of typical lifespan (8–12 years for most tanks). Proactive replacement is smart.
Estimated replacement cost
$950 – $1,550
Installed, including labor
Cost breakdown
Where Your Money Goes
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Estimates based on national averages. Actual costs vary by region and contractor.
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What you'll need
- ·Current water heater type and age
- ·Replacement type — like-for-like, tankless, or heat pump
- ·Household size or hot water demand
What you'll get
- ✓Cost range — By replacement type
- ✓State & utility rebates — For qualifying heat pump/high-efficiency units
- ✓Installed total — Unit + labor combined
How it works
Select replacement type
Choose same type (like-for-like) or upgrade to tankless or heat pump water heater.
Enter home details
Household size determines tank capacity. Tankless units are sized by flow rate (GPM).
Check state & utility rebates
The federal 25C credit for heat pump water heaters ended after Dec 31, 2025 — but state and utility rebates may still apply. Check DSIRE.
2026 Water Heater Replacement Costs
| Type | Cost Range | Rebates* |
|---|---|---|
| Gas tank (50 gal) | $750–$1,550 | — |
| Electric tank (50 gal) | $650–$1,400 | — |
| Heat pump (50 gal) | $1,100–$2,600 | Varies by state |
| Tankless gas | $950–$3,800 | Varies by state |
| Tankless electric | $500–$2,200 | — |
*The federal 25C tax credit ended after Dec 31, 2025. Amounts shown are state/utility rebates, which vary — check DSIRE (dsireusa.org).
"Installation" or "replacement" — which calculator do you need?
Most people who search "water heater installation cost" mean swapping out an old unit, and that's exactly what this calculator prices. If you're installing a water heater where none exists today — new construction, a new bathroom, or a detached space — see the dedicated Water Heater Installation Cost Calculator instead, which prices a from-scratch hookup (new gas or electrical run, venting, and a fresh water line) separately from a like-for-like swap.
Tank vs. tankless vs. heat pump
- Tank (gas/electric): cheapest to install, simplest, but runs out of hot water and lasts 8–12 years.
- Tankless (on-demand): endless hot water, lasts 20+ years, saves $100–$200/yr — but costs more upfront and may need a gas-line or electrical upgrade.
- Heat pump (hybrid): 2–3× more efficient than an electric tank ($300–$500/yr savings), but needs 1,000+ sq ft of 40°F+ space around it.
What's included, sizing & brands
A quote should cover the unit, install labor, and connections. Extra: new gas line ($300–$1,000), electrical for heat pump/tankless, expansion tank, code upgrades, and permit ($50–$200). Sizing: 30–40 gal for 1–2 people, 50 gal for 3–4, 75–80 gal (or a large tankless) for 5+. Common brands: Rheem, A.O. Smith, Bradford White, Rinnai (tankless).
Repair or replace, and red flags
Repair a young tank (under 8 years) with a bad element, thermostat, or valve. Replace when it's 10+ years old, leaking from the tank, rusty water, or repairs top ~50% of a new unit. A tank at end of life will flood — don't wait for the failure.
- Is haul-away, a new expansion tank, and permit included?
- Does the price include bringing venting/gas to current code?
- What's the tank warranty (6–12 years)? (An undersized unit or skipped permit is a common cut-corner.)
Methodology & sources
The cost figures on this page are generated from a single, sourced cost-data file (National average, 50-gallon tank where applicable, installed (unit + labor). National average estimate.). The federal 25C tax credit for heat pump / high-efficiency units ended after Dec 31, 2025; state and utility rebates may still apply. Last verified July 2026.
- U.S. Department of Energy — Water Heating (types, sizing, efficiency) — retrieved 2026-07-13
- ENERGY STAR — Water Heaters (heat pump / high-efficiency guidance) — retrieved 2026-07-13
About this calculator
How much does it cost to replace a water heater?+
Water heater replacement typically costs $650–$1,400 for a standard electric tank and $750–$1,550 for a gas tank, including labor. Tankless units run $500–$2,200 (electric) or $950–$3,800 (gas) installed. Heat pump water heaters cost $1,100–$2,600; while the federal 25C tax credit ended after December 31, 2025, state and utility rebates may still lower the cost.
How long does a water heater last?+
Tank water heaters last 8–12 years on average. Tankless models last 15–20 years with proper maintenance. If your unit is 10+ years old and failing, replacement is typically more cost-effective than repair.
Is there a tax credit for replacing a water heater in 2026?+
No federal credit for 2026 installs. The 25C credit that gave 30% (up to $600) on qualifying heat pump and high-efficiency gas tankless water heaters ended for units placed in service after December 31, 2025 (One Big Beautiful Bill Act, 2025). Units installed and operational by December 31, 2025 can still be claimed on your 2025 return (IRS Form 5695). For 2026, check state and utility rebates and the HEAR/HOMES programs via DSIRE (dsireusa.org).
How long does water heater installation take?+
Standard tank water heater installation takes 2–3 hours. Tankless installations take 3–5 hours. Heat pump water heaters may require additional time if electrical panel upgrades are needed.
What size water heater do I need?+
For a household of 1–2 people, a 30–40 gallon tank is sufficient. 3–4 people typically need 50 gallons. Households of 5+ need 75–80 gallons or a large tankless unit. A licensed plumber can recommend the right size for your usage.
Ready to get your estimate?
Answer 5 quick questions and see your personalized cost range.
Back to the calculator ↑Water Heater Replacement Cost Calculator is built and maintained by the RealCostIQ editorial team. Cost ranges and rates are checked against published industry data and contractor quotes, and revised when the underlying figures move. Read our data methodology or more about who builds this. Every calculation runs in your browser — no account, and none of your inputs are stored.
Cost ranges and rates here are checked against contractor quotes and published industry data. If a number still looks off, email Support@RealCostIQ.com and we'll review and fix it.