- Tankless water heater installation usually costs $1,400 to $3,950, about $2,750 typical.
- A whole-house tankless water heater, unit and installation.
- Price your own job with the calculator above; it breaks the job into lines.
What tankless water heater installation costs
Expect tankless water heater installation to cost between $1,400 and $3,950, with $2,750 as a typical figure. A whole-house tankless water heater, unit and installation.
| Price | |
|---|---|
| Low end | $1,400 |
| Typical | $2,750 |
| High end | $3,950 |
National figures from Fixr, HomeAdvisor, This Old House and Today's Homeowner, combined as shown below. Labor rates move the price by state: about $3,279 typical in Hawaii against $2,434 in Arkansas.
What drives the price
- Gas or electric. Gas units cost more to install because of venting and gas supply.
- Size. Flow rate is matched to how many fixtures run at once.
- Switching from a tank. A bigger gas line, new venting or a heavier electrical circuit are common add-ons.
- Point of use or whole house. Small single-point electric units are far cheaper.
Extra costs to plan for
| Item | Price | Source |
|---|---|---|
| Building permit | $150 to $500 | HomeAdvisor |
Not every quote includes these. Check each line before comparing tankless water heater installation bids.
Tankless water heater installation cost by state
Estimates by state, made by Koira: the national tankless water heater installation range with its labor part, roughly 50%, adjusted to local wages for construction and extraction workers. Real quotes vary with the job.
| State | Low | Typical | High |
|---|---|---|---|
| Alabama | $1,262 | $2,479 | $3,561 |
| Alaska | $1,589 | $3,121 | $4,483 |
| Arizona | $1,382 | $2,715 | $3,900 |
| Arkansas | $1,239 | $2,434 | $3,496 |
| California | $1,543 | $3,030 | $4,352 |
| Colorado | $1,419 | $2,788 | $4,004 |
| Connecticut | $1,542 | $3,029 | $4,351 |
| Delaware | $1,398 | $2,746 | $3,944 |
| District of Columbia | $1,524 | $2,994 | $4,300 |
| Florida | $1,280 | $2,515 | $3,612 |
| Georgia | $1,285 | $2,525 | $3,626 |
| Hawaii | $1,669 | $3,279 | $4,710 |
| Idaho | $1,360 | $2,672 | $3,838 |
| Illinois | $1,647 | $3,236 | $4,647 |
| Indiana | $1,427 | $2,803 | $4,027 |
| Iowa | $1,399 | $2,748 | $3,947 |
| Kansas | $1,346 | $2,644 | $3,798 |
| Kentucky | $1,325 | $2,602 | $3,738 |
| Louisiana | $1,287 | $2,528 | $3,631 |
| Maine | $1,409 | $2,768 | $3,976 |
| Maryland | $1,404 | $2,758 | $3,961 |
| Massachusetts | $1,611 | $3,164 | $4,545 |
| Michigan | $1,419 | $2,788 | $4,004 |
| Minnesota | $1,553 | $3,051 | $4,383 |
| Mississippi | $1,250 | $2,456 | $3,527 |
| Missouri | $1,426 | $2,800 | $4,022 |
| Montana | $1,417 | $2,783 | $3,997 |
| Nebraska | $1,332 | $2,617 | $3,759 |
| Nevada | $1,426 | $2,800 | $4,022 |
| New Hampshire | $1,406 | $2,762 | $3,968 |
| New Jersey | $1,564 | $3,071 | $4,412 |
| New Mexico | $1,287 | $2,527 | $3,630 |
| New York | $1,528 | $3,001 | $4,310 |
| North Carolina | $1,281 | $2,516 | $3,613 |
| North Dakota | $1,419 | $2,787 | $4,004 |
| Ohio | $1,431 | $2,810 | $4,036 |
| Oklahoma | $1,272 | $2,498 | $3,588 |
| Oregon | $1,477 | $2,902 | $4,168 |
| Pennsylvania | $1,411 | $2,773 | $3,982 |
| Rhode Island | $1,441 | $2,831 | $4,066 |
| South Carolina | $1,283 | $2,519 | $3,619 |
| South Dakota | $1,289 | $2,532 | $3,638 |
| Tennessee | $1,294 | $2,542 | $3,651 |
| Texas | $1,278 | $2,510 | $3,606 |
| Utah | $1,372 | $2,695 | $3,871 |
| Vermont | $1,402 | $2,754 | $3,956 |
| Virginia | $1,364 | $2,678 | $3,847 |
| Washington | $1,588 | $3,118 | $4,479 |
| West Virginia | $1,377 | $2,705 | $3,886 |
| Wisconsin | $1,448 | $2,845 | $4,086 |
| Wyoming | $1,402 | $2,755 | $3,957 |
Big metro areas often run above their state's figure.
How we got these numbers
| Guide | Range | Average | Use |
|---|---|---|---|
| Fixr | $2,500 to $4,500 | $2,811 | Counted |
| HomeAdvisor | $1,406 to $3,902 | Not given | Counted |
| Bob Vila | $1,333 to $3,721 | $2,527 | Shown, not counted: it repeats another guide's figures |
| This Old House | $1,200 to $3,500 | $2,800 | Counted |
| Today's Homeowner | $1,400 to $4,000 | $2,600 | Counted |
We take the middle of the guides' lows for the low end, the middle of their highs for the high end, and the middle of their averages for the typical tankless water heater installation price. Where a guide gives no average we use its midpoint. All read on October 9, 2026.
Labor share used: 50%. None of the guides splits labor out for this job, so this share is Koira's working assumption for plumbing work. State factor: the state's median hourly wage for construction and extraction workers over the national $28.63 (BLS, May 2025), kept between 0.7 and 1.4.
For contractors: price this job in Koira
Plumbing calls come in when something is leaking, so a fast answer and a clear price for the fix and the parts matter most.
Run the numbers for a real tankless water heater installation in the free water heater replacement cost calculator, then save the result as an estimate. With Koira's free Office plan, the tankless water heater installation estimate, the deposit and the final invoice live in one place, sent by text. See estimates. Price this job in Koira, free.
Sources: Fixr, tankless water heater installation cost; HomeAdvisor, tankless water heater installation cost; Bob Vila, tankless water heater installation cost; This Old House, tankless water heater installation cost; Today's Homeowner, tankless water heater installation cost; BLS Occupational Employment and Wage Statistics, May 2025 (state and national files). Prices checked October 9, 2026. More for your trade: how the trade runs on Koira.