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Water Heater Installation Cost Calculator
New water heater installation costs $650–$2,000 for most homes in 2026, by type. A gas tank runs $750–$1,350; an electric tank $650–$1,200; a heat pump $1,150–$2,000; tankless gas $950–$1,800. Adding a gas line where none exists adds $300–$1,000 and permits $50–$200. 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.
Right for 1–2 person households or low hot water use. Lower purchase price.
Rural Midwest, Southeast, or Southwest. Labor rates $35–$55/hr.
Existing gas supply is properly sized and located. No additional plumbing work needed.
Some jurisdictions waive permits for like-for-like replacements. Check with your local building department.
Estimated installation cost
$550 – $1,000
Full install including unit and labor
Cost breakdown
Where Your Money Goes
Your selections
Estimates based on national averages. Actual costs vary by region and contractor.
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What you'll need
- ·Water heater type — gas, electric, heat pump, or tankless
- ·Household size or hot water demand
- ·Whether a permit or gas line install is required
What you'll get
- ✓Unit cost — By type and size
- ✓Installed total — Unit + labor combined
- ✓Gas line & permit add-ons — For new gas installations
How it works
Select water heater type
Choose tank (gas/electric), tankless, or heat pump water heater.
Enter household size
Tank capacity or flow rate requirements depend on how many people live in the home.
Add permits and gas line
New gas installations require a permit and may need gas line work (+$200–$800).
2026 Water Heater Installation Costs
| Type | Unit Cost | Installed |
|---|---|---|
| Gas Tank (50 gal) | $500 – $850 | $750 – $1,350 |
| Electric Tank (50 gal) | $400 – $700 | $650 – $1,200 |
| Heat Pump (50 gal) | $900 – $1,500 | $1,150 – $2,000 |
| Tankless Gas (medium) | $700 – $1,300 | $950 – $1,800 |
| Tankless Electric (medium) | $300 – $700 | $550 – $1,200 |
Methodology & sources
The cost figures on this page are generated from a single, sourced cost-data file (New installation, 50-gallon tank where applicable, installed (unit + labor). National average estimate.). Adding a gas line where none exists adds $300–$1,000; permits add $50–$200. The federal 25C credit for heat pump units ended after Dec 31, 2025 — state/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 — retrieved 2026-07-13
About this calculator
How much does water heater installation cost?+
Water heater installation costs $650–$2,000 for most homes. A standard 50-gallon gas tank water heater costs $750–$1,350 installed. Electric tank units cost $650–$1,200. Heat pump water heaters cost $1,150–$2,000 (the federal 25C credit ended after December 31, 2025, but state and utility rebates may still apply). Tankless gas units cost $950–$1,800. Installing a gas line where none exists adds $300–$1,000. Permits add $50–$200.
Tank vs. tankless water heater: which is better?+
Tankless water heaters cost $500–$1,000 more upfront but last 20–25 years vs 10–12 years for tank units and save $100–$200 per year in energy costs. They also never run out of hot water. Tank water heaters have lower upfront costs and simpler maintenance. For households with high hot water demand or planning to stay long-term, tankless usually wins. For shorter time horizons, tank is more economical.
What size water heater do I need?+
Water heater sizing by household: 1–2 people = 30–40 gallon tank or 6–8 GPM tankless. 2–3 people = 40–50 gallon or 7–9 GPM. 3–4 people = 50–60 gallon or 8–10 GPM. 4+ people = 60–80 gallon or 10+ GPM. For tankless, also consider simultaneous use — running a shower while a dishwasher runs requires more GPM capacity.
Is a heat pump water heater worth it?+
Heat pump water heaters are 2–3x more energy efficient than electric tank units and save $300–$500 per year on electricity. They cost $1,150–$2,000 installed; the federal 25C tax credit ended after December 31, 2025, but state and utility rebates (check DSIRE at dsireusa.org) can still reduce the net cost. Payback vs. electric tank is typically 3–5 years. They require 1,000+ sq ft of surrounding space above 40°F to function efficiently.
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Back to the calculator ↑Water Heater Installation 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.