How Much Does a Tankless Water Heater Cost?
$1,500 – $4,500
National average: $3,000 installed
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Tankless water heater cost calculator
Set the scope, size, and state — the tally updates as you go. Built from this guide's figures and BLS state wage data.
01 Quality & scope
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State figures apply BLS construction wages (2025) at a 60% labor weight — how we estimate.
Your estimate
- Labor ≈60%
- $1,800
- Materials & equipment
- $1,200
- Planning range
- $2,700 – $3,300
low $1,500 $4,500 high
U.S. construction trades average $65,360/yr (BLS 2025).
Get three written bids. One far under $2,400 usually means missing scope — ask what's not included. Far over $3,600, ask what's driving the number.
A tankless water heater heats water on demand instead of keeping a tank hot 24/7 — endless hot water and a longer lifespan, for a higher upfront price. Installation costs $1,500 to $4,500 in 2026, averaging around $3,000, depending on fuel type and what your home needs to support it.
What you’re paying for
The unit itself is only part of the bill. The rest is labor plus the upgrades a tankless heater often demands: a bigger gas line, new venting, or added electrical capacity. Those upgrades are why switching from a tank can cost more than a simple swap.
Gas vs. electric
Electric units are cheaper to install and fine for smaller homes or single fixtures, but high demand may need a panel upgrade. Gas units cost more and require proper venting, but deliver the flow a whole house needs.
The value is in the long run
Tankless costs more than a tank upfront but lasts 20+ years and only heats water when you use it. The payback shows up in energy bills and not replacing the unit as often.
How to save on a tankless water heater
- Match the size to your demand — oversizing wastes money.
- Check your gas line and venting before buying; upgrades drive the cost.
- Consider a condensing unit if you want the lowest operating cost.
- Descale it yearly to hit the 20-year lifespan.
| Component | Typical range | Notes |
|---|---|---|
| Tankless unit | $500 – $2,000 | — |
| Installation labor | $500 – $1,500 | — |
| Gas line / venting upgrade | $300 – $1,500 | Common when replacing a tank |
| Electrical upgrade (electric units) | $300 – $1,500 | — |
| Permits | $50 – $300 | — |
| Option | Typical range | Notes |
|---|---|---|
| Point-of-use (electric) | $200 – $800 | One fixture; small |
| Whole-house electric | $1,200 – $3,500 | — |
| Whole-house gas | $2,000 – $4,500 | Higher flow; needs venting |
| Condensing gas | $2,500 – $5,500 | Most efficient |
What affects the price
- Gas vs. electric Electric units are cheaper to install but may need a panel upgrade; gas units cost more and need proper venting but deliver more hot water.
- Switching from a tank Retrofitting often means a larger gas line, new stainless venting, or added circuits — the biggest cost surprise.
- Size & flow rate A whole-house unit sized for simultaneous showers costs more than a single-bathroom or point-of-use heater.
- Condensing vs. non-condensing Condensing units cost more upfront but recover more heat and cut operating costs.
Tankless water heater cost by state
Where you live moves the price as much as any option you pick, because labor is a big share of the bill and construction wages differ sharply by state. Adjusted with BLS wage data (2025), a typical tankless water heater job runs about $1,800 – $5,300 in Hawaii (+17%) versus $1,300 – $3,800 in Arkansas (−15%).
See the typical range in all 50 states + D.C.
| State | Typical range |
|---|---|
| Alabama | $1,300 – $3,900 |
| Alaska | $1,700 – $5,200 |
| Arizona | $1,400 – $4,300 |
| Arkansas | $1,300 – $3,800 |
| California | $1,700 – $5,000 |
| Colorado | $1,500 – $4,500 |
| Connecticut | $1,600 – $4,800 |
| Delaware | $1,500 – $4,400 |
| District of Columbia | $1,600 – $4,900 |
| Florida | $1,400 – $4,100 |
| Georgia | $1,400 – $4,100 |
| Hawaii | $1,800 – $5,300 |
| Idaho | $1,400 – $4,200 |
| Illinois | $1,700 – $5,200 |
| Indiana | $1,500 – $4,500 |
| Iowa | $1,500 – $4,400 |
| Kansas | $1,400 – $4,300 |
| Kentucky | $1,400 – $4,200 |
| Louisiana | $1,400 – $4,100 |
| Maine | $1,500 – $4,400 |
| Maryland | $1,500 – $4,500 |
| Massachusetts | $1,700 – $5,200 |
| Michigan | $1,500 – $4,500 |
| Minnesota | $1,600 – $4,900 |
| Mississippi | $1,300 – $3,900 |
| Missouri | $1,500 – $4,600 |
| Montana | $1,500 – $4,400 |
| Nebraska | $1,400 – $4,200 |
| Nevada | $1,500 – $4,600 |
| New Hampshire | $1,500 – $4,500 |
| New Jersey | $1,700 – $5,100 |
| New Mexico | $1,400 – $4,100 |
| New York | $1,700 – $5,000 |
| North Carolina | $1,400 – $4,100 |
| North Dakota | $1,500 – $4,500 |
| Ohio | $1,500 – $4,500 |
| Oklahoma | $1,400 – $4,100 |
| Oregon | $1,700 – $5,000 |
| Pennsylvania | $1,500 – $4,500 |
| Rhode Island | $1,600 – $4,700 |
| South Carolina | $1,400 – $4,100 |
| South Dakota | $1,400 – $4,100 |
| Tennessee | $1,400 – $4,100 |
| Texas | $1,400 – $4,100 |
| Utah | $1,400 – $4,200 |
| Vermont | $1,500 – $4,400 |
| Virginia | $1,400 – $4,300 |
| Washington | $1,700 – $5,200 |
| West Virginia | $1,400 – $4,300 |
| Wisconsin | $1,600 – $4,700 |
| Wyoming | $1,500 – $4,500 |
Estimates apply each state's BLS construction-wage multiplier to this guide's national range — a planning number, not a quote. Browse the full state cost guides or our methodology.
Frequently asked questions
- How much does it cost to install a tankless water heater?
- Most installs run $1,500–$4,500, averaging about $3,000. The unit is $500–$2,000; the rest is labor plus any gas-line, venting, or electrical upgrades needed to support it.
- Is a tankless water heater cheaper than a tank?
- No — upfront it costs more than a standard tank ($800–$2,500 installed). It saves over time through lower energy use and a 20+ year lifespan, so the payback is in operating cost, not install price.
- Gas or electric tankless — which is better?
- Gas handles whole-house demand better and runs through outages, but costs more to install and vent. Electric is cheaper and simpler for smaller homes or point-of-use, though it may require an electrical upgrade.
- How long does a tankless water heater last?
- About 20 years or more with annual descaling — roughly double a tank's 10–15 year life. That longevity is a big part of the value case.
- Is a tankless water heater worth it?
- If you want endless hot water, a longer lifespan, and lower energy bills — and you'll stay in the home long enough to recoup the higher install cost — yes. For a short stay or tight budget, a standard tank is cheaper upfront.
How we estimate: ranges reflect typical U.S. pricing for materials and professional installation, compiled and cross-checked against the current (2026) industry sources listed below (see our data & methodology). Your actual cost depends on your location, project size, material grade, and local labor rates — always get multiple written quotes before you commit.
Sources
Cost ranges on this page were checked against current (2026) data from these industry sources:
- Tankless Water Heater Cost (2026) — HomeGuide
- How Much Does a Tankless Water Heater Cost? — Angi
- Tankless Water Heater Cost — Bob Vila