Tankless Water Heater Installation Cost (2026)
Updated October 2026
Installing a tankless water heater costs about $2,764 typical nationally, with a range of $1,058–$6,698 (Fixr envelope). The four publisher averages cluster at $2,527–$2,811 — HomeAdvisor $2,641, BobVila $2,527, Fixr $2,811, and This Old House $2,800 — and they are kept separate, never averaged. What actually moves your quote is fuel and scope: a whole-house gas install runs $1,650–$3,500, an electric one $650–$2,500, and a single-point unit just $100–$500.
Publisher bands — kept separate
| Publisher | Average installed | Published range | Note |
|---|---|---|---|
| Fixr | $2,811 | $2,500-$4,500 | Normal published band |
| This Old House | $2,800 | $1,200-$3,500 | Normal published band |
| HomeAdvisor | $2,641 | $1,406-$3,902 | Overall range $384-$6,000 |
| BobVila | $2,527 | $1,333-$3,721 | Normal published band |
Source: cited dataset (retrieved 2026-10-09). The headline typical of $2,764 is the mid of the Fixr/This Old House cluster, not a blend of the four averages; the median of the four averages is $2,720.5.
Cost by fuel and type
| Type | Equipment only | Installed total | Basis |
|---|---|---|---|
| Gas whole-house | $500–$2,000 | $1,650–$3,500 | Unit $750–$2,000 + install $900–$1,500 (This Old House); Fixr average $2,811. |
| Electric whole-house | $450–$1,500 | $650–$2,500 | Panel upgrade excluded; This Old House total $650–$2,500. |
| Single-point / point-of-use | — | $100–$500 | HomeAdvisor $100–$250; Fixr $150–$300; This Old House $150–$500 (1–2 GPM); BobVila $100–$300. |
| Propane whole-house | $500–$2,000 | $1,400–$3,500 | This Old House unit $500–$2,000 + install $900–$1,500. |
| Solar whole-house | $1,000–$4,000 | $1,800–$6,000 | HomeAdvisor with-install band; high-end whole job $6,698 (Fixr). |
Units differ by row: equipment-only, installed total, and add-on increments are different bases — never compose across them. The gas total legitimately mixes publisher scopes (unit-only vs unit + install); the electric total excludes any panel upgrade.
Labor, permits, and scope add-ons
| Measure | Band | Read |
|---|---|---|
| Labor rate | $75–$150/hr, 4–8 hrs (This Old House); $45–$200/hr (BobVila) | The hourly figure is labor only — never add it to an installed total twice. |
| Licensed install premium | Adds $500–$1,500 (This Old House); labor avg $600–$1,850 (BobVila) | License and permit-pulling scope varies by jurisdiction. |
| Permits | $150–$500 (HomeAdvisor); $50–$100 (BobVila) | Local fee schedule; the widest single source of quote variance. |
| Gas-line upsize | $400–$800 (This Old House); increment up to $1,000 (BobVila) | Common in older homes when moving from a storage tank to a whole-house gas unit. |
| Electrical panel upgrade | Add $200–$800; new circuit $200–$600; full panel $1,000–$2,000 (This Old House) | Applies to electric units; excluded from the electric installed band above. |
What drives the cost
- Fuel and type: gas whole-house ~$1,650–$3,500; electric ~$650–$2,500; propane ~$1,400–$3,500; solar (high-end) $1,800–$6,000+; single-point $100–$500.
- Whole-house vs single-point: a whole-house unit serves the home's hot water supply; a point-of-use unit serves one fixture and costs a fraction as much.
- Scope add-ons: gas-line upsize $400–$800 (up to ~$1,000); electrical panel upgrade add $200–$800, new circuit $200–$600, full panel $1,000–$2,000.
- Labor hours and licensing: 4–8 hours at $75–$150/hr (This Old House) or $45–$200/hr (BobVila); a licensed install adds $500–$1,500.
- Permits: $150–$500 (HomeAdvisor) or $50–$100 (BobVila), jurisdiction-dependent.
- Venting and location: moving or adding venting and the install location (interior vs exterior wall) widen the labor scope — priced within the hourly band, not as a separate quoted row.
What the headline number hides
The $1,058 low is a single-point, simple-scope figure and the $6,698 high is a high-end solar, whole-house job. That band spans different jobs, so anchor a quote to your fuel and scope rather than to either end of the national range. If you are replacing an existing storage tank rather than buying a new tankless unit, see the water heater replacement cost breakdown, or start from the broader water heater cost guide and our water heater cost calculator.
FAQs
How much does it cost to install a tankless water heater?
About $2,764 typical nationally, with a low near $1,058 and a high near $6,698 (Fixr envelope). Publisher averages cluster at $2,527 to $2,811: HomeAdvisor $2,641, BobVila $2,527, Fixr $2,811, This Old House $2,800. Publisher bands are kept separate and never averaged into one figure.
Is a gas or an electric tankless water heater cheaper to install?
Electric is usually cheaper to install, with equipment $450 to $1,500 and totals around $650 to $2,500, but a gas whole-house install runs about $1,650 to $3,500 and can need a gas-line upsize of $400 to $800, while an electric one can need a panel upgrade adding $200 to $800. Compare full scope, not just the unit.
How much is a single-point tankless water heater installed?
A single-point or point-of-use tankless unit installed runs $100 to $500: HomeAdvisor $100 to $250, Fixr $150 to $300, This Old House $150 to $500 for 1 to 2 GPM, and BobVila $100 to $300.
What do labor and permits add to a tankless install?
Labor runs $75 to $150 per hour for 4 to 8 hours (This Old House) or $45 to $200 per hour (BobVila); a licensed install adds $500 to $1,500. Permits run $150 to $500 (HomeAdvisor) or $50 to $100 (BobVila).
What hidden costs should I expect on a tankless water heater install?
A gas-line upsize of $400 to $800, an electrical panel upgrade adding $200 to $800, and permit fees are the common extras beyond the unit, plus venting and install-location labor within the hourly band.
Why does the tankless installation cost band run from about $1,058 to $6,698?
The low end is a single-point or simple-scope figure and the high end is a high-end solar or whole-house job. The headline band spans type and scope, which is why the by-type tables matter more than the single headline number.
Sources
- Fixr — Tankless Water Heater Installation Cost (national average $2,811; $1,058–$6,698 envelope)
- This Old House — Tankless Water Heater Installation Cost (2026 Pricing) (average $2,800; $1,200–$3,500 typical)
- HomeAdvisor — Tankless Water Heater Cost to Install (updated Jun 17, 2026) (average $2,641; $1,406–$3,902)
- BobVila — Tankless Water Heater Cost (2026 Guide) (average $2,527; $1,333–$3,721)
Figures gathered 2026-10-24; see the cited dataset in packages/pricing-data/data/water-heaters/tankless-water-heater-installation-costs.json for the full source log. Per-publisher bands are kept separate, never averaged. Angi and HomeGuide returned HTTP 403 on retrieval and are not cited. Estimate only — get local written quotes.