Electric Tankless Water Heater Cost: 2026 Installed Price Calculator
Mike Martin, MA CSL, is the founder and construction cost editor of RemodelingExpense. His residential construction experience informs the site’s cost research, calculators, and homeowner project guidance.
Electric tankless water heater cost ranges from $2,000 – $6,500 installed for most point-of-use or smaller whole-house electric tankless projects.
Electric tankless water heaters differ from a broader tankless hot water system because the price is driven by breaker size, wire gauge, panel capacity, flow rate, incoming water temperature, and whether the unit serves one fixture or the whole house.
Use the calculator below to estimate your price based on unit size, electrical capacity, breaker and wiring needs, plumbing changes, and local labor rates.
Cost Calculator
Electric Tankless Water Heater Cost Calculator
Estimate electric tankless water heater pricing based on unit size, flow rate, breaker and wire needs, panel capacity, point-of-use or whole-house installation, plumbing changes, water quality, permit needs, cleanup, and local labor rates.
Your estimated cost
For 1 water heaters
$2,000 – $6,500
About $2,000 – $6,500 per water heaters
Use your estimate as a starting point, then compare real prices from local contractors.
| Cost item | Low estimate | High estimate |
|---|---|---|
| Materials | $600 | $2,500 |
| Labor | $1,400 | $4,000 |
| Estimated electric tankless water heater cost | $2,000 | $6,500 |
| Installed cost per electric tankless water heater | $2,000 | $6,500 |
Why your price may change
- Local labor rates vary.
- Material quality affects the price.
- Old material removal, repairs, permits, or code updates can add cost.
- Hard-to-reach areas, complex layouts, rush jobs, or premium contractors may cost more.
Estimate includes local labor adjustments and may differ slightly from rounded national cost examples.
Electric Tankless Water Heater Cost vs Value
Electric Tankless Water Heater may recover about 30%–60% of its cost.
Bottom line: Electric tankless water heater pricing depends on unit size, flow rate, breaker and wire needs, panel capacity, point-of-use or whole-house installation, plumbing changes, water quality, permit needs, cleanup, and local labor rates.
Worth it: Condos, small homes, additions, remote sinks, point-of-use hot water, and homes where gas venting is not practical but electrical capacity is available.
Skip it: If the home needs major panel upgrades, a standard electric tank or heat pump water heater may be cheaper and more practical.
ROI ranges are planning estimates and should not be treated as an appraisal. This is only an estimate. Real resale value depends on your home, neighborhood, market, project quality, and buyer demand.
Contractor Reality Check
Electric tankless quotes are often less about the water heater and more about the electrical service. Whole-house electric tankless units can need multiple breakers, heavy-gauge wire, and enough panel capacity to handle the load.
My rule of thumb: Ask whether the quote includes unit sizing, breaker work, wire size, panel capacity check, plumbing connections, isolation valves, permit, startup, and cleanup before comparing bids.
What to Confirm Before You Sign
- Point-of-use or whole-house: Confirm whether the unit serves one sink, one bathroom, an addition, or the entire home.
- Flow rate: Ask how many gallons per minute the unit can deliver based on your incoming water temperature.
- Electrical capacity: Confirm breaker size, wire gauge, panel capacity, and whether a subpanel or service upgrade is needed.
- Fixture demand: Ask whether the unit can handle showers, laundry, dishwashing, and simultaneous hot water use.
- Plumbing changes: Make sure water line rerouting, valves, fittings, and old tank removal are included.
- Water quality: Ask whether hard water, scale buildup, sediment, or filtration affects warranty and maintenance.
- Buffer: Budget 10% to 20% for surprises, electrical corrections, panel work, plumbing changes, or code upgrades.
Surprise Costs That Move the Price
| Item | Why It Adds Cost | Typical Add |
|---|---|---|
| Panel capacity upgrade | Whole-house electric tankless units can require more electrical capacity than the existing panel has available. | $1,000 – $4,000 |
| New breakers and wiring | Many electric tankless units need dedicated breakers and heavier wire than a standard tank unit. | $800 – $3,000 |
| Subpanel installation | A subpanel may be needed when breaker space or wiring layout is limited near the unit. | $700 – $2,500 |
| Plumbing reroute | Moving from a tank to a wall-mounted unit can require new water lines, valves, and fittings. | $400 – $1,800 |
| Water treatment | Hard water can cause scale buildup and may require filtration, scale control, or regular flushing. | $300 – $2,000 |
Electric Tankless Water Heater Cost by Type
| Type | Installed Cost per Water Heater | Best For |
|---|---|---|
| Point-of-use electric tankless | $800 – $2,500 | Single sinks, remote bathrooms, garages, additions, and small hot water points. |
| Small electric tankless system | $1,500 – $4,000 | Condos, small homes, cabins, and limited fixture demand. |
| Whole-house electric tankless | $3,500 – $8,000 | Homes with enough panel capacity and moderate simultaneous hot water use. |
| Electric tankless with panel work | $5,000 – $10,000 | Homes that need larger breakers, heavier wiring, or electrical service corrections. |
| Multiple point-of-use units | $2,500 – $9,000 | Homes with spread-out fixtures where one central tankless unit is not ideal. |
Is an Electric Tankless Water Heater Worth It?
An electric tankless water heater is worth it when gas venting is not practical, the home has enough electrical capacity, and the system is sized realistically for the number of fixtures you use at the same time.
Skip it: If the home needs major panel upgrades, compare the project against the Electric Hot Water Heater Calculator or the Heat Pump Water Heater Calculator before committing.
References – Electric Tankless Water Heater Cost
- Tankless Water Heater Guidance: U.S. Department of Energy
- Selecting a New Water Heater: U.S. Department of Energy
- Water Heater Product Guidance: ENERGY STAR
- Electric Tankless Water Heater Pricing: The Home Depot
- Labor Wage Data: Occupational Employment and Wage Statistics, U.S. Bureau of Labor Statistics
Last Updated: 6/25/26
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