Tankless Water Heater Cost Calculator
Use this free tankless water heater cost calculator to get an instant estimate based on unit type (electric or gas), flow demand, quality, and location. Most whole-house installations run $1,500–$5,500. Costs vary by venting, electrical work, and labor rates. Get a low, average, and high estimate below.
How much does a tankless water heater cost?
Tankless water heater installation typically costs $1,500–$5,500 in the U.S. Electric whole-house units often run $1,000–$2,500; gas $1,500–$4,500. Cost depends on flow demand, venting, and labor. Get 2–3 local quotes for an accurate price.
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How to read this estimate
These figures are based on national average material and labor costs adjusted for the options you selected. Actual pricing varies with your local market, site conditions, material availability and contractor workload. Always get two or three written quotes before committing to a project.
Average Tankless Water Heater Cost
National averages for tankless water heater installation range from about $1,500 to $5,500. Final cost depends on type, size, venting, and location.
Cost by type (installed)
Typical total cost ranges
| Type | Estimated cost |
|---|---|
| Electric (point-of-use) | $500–$1,500 |
| Electric (whole-house) | $1,000–$2,500 |
| Gas (whole-house) | $1,500–$4,500 |
| Propane (whole-house) | $1,800–$5,000 |
Cost factors
What drives the total
| Factor | Impact |
|---|---|
| Venting (gas) | $300–$1,500+ |
| Electrical upgrade | $500–$2,500 |
| Labor | ~50% of total |
What Affects Tankless Water Heater Cost?
- Type — Gas units cost more than electric; propane often highest.
- Flow demand — Whole-house and high GPM cost more.
- Venting — New or extended vent runs add $300–$1,500+.
- Electrical — Panel or circuit upgrades add $500–$2,500.
- Labor — Typically 45–55% of total; varies by region.
- Permits — Often $50–$200 for gas or major electrical.
Data from contractor quotes & supplier pricing
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Tankless Water Heater Cost FAQs
Common questions about tankless water heater cost and installation.
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Disclaimer: These estimates are for planning only. Actual costs depend on your location, unit choice, venting, and electrical needs. Always get 2–3 written quotes from licensed plumbers.