Basic
$1,334 – $3,558 per project
Tankless heater matched to the existing fuel, sized for 2-3 fixtures at once, standard efficiency, vent and power hooked up as required, isolation valves
How Much Does Install Tankless Hot Water Heater Cost in Washington, District of Columbia?
Supply and install a whole-home tankless water heater (gas or electric) including labor, venting/electrical hookup and permit; gas-line or panel upgrades extra.
Install Tankless Hot Water Heater in Washington, District of Columbia typically costs $1,570 to $4,186 per project as of 2026. Prices reflect local labor and material rates. Use our calculator below for a detailed, ZIP-code-adjusted estimate.
Install Tankless Hot Water Heater in Washington, District of Columbia
$1,570 – $4,186
per projectPrices in Washington are 5.0% higher than the national average for install tankless hot water heater.
National average: $1,500 – $4,000 per project
What you get at each price level
Standard
$1,570 – $4,186 per project
Tankless heater matched to the existing fuel, sized for 2-3 fixtures at once, higher-efficiency model with digital display, isolation valve kit
Premium
$1,962 – $5,233 per project
Tankless heater matched to the existing fuel, sized for 2-3 fixtures at once, top-efficiency model with Wi-Fi control, recirculation-ready, isolation valve kit
Cost Breakdown in Washington
| Component | Category | Price Range | Unit |
|---|---|---|---|
| Materials | material | $709 – $1,890 | job |
| Labor | labor | $546 – $1,456 | job |
| Supplies & Other | supplies | $189 – $504 | job |
| Equipment & Disposal | equipment | $126 – $336 | job |
Prices adjusted for Washington local market conditions.
Install Tankless Hot Water Heater photo examples
Two wall-mounted gas tankless water heaters piped with expansion tanks on a plywood wall
Photo: Behrat · CC BY-SA 3.0 · Source
Find a pro to do thisTankless water heater mounted on the exterior wall of a house
Photo: radical.librarian · CC BY 2.0 · Source
Find a pro to do thisWall-mounted electric tankless water heater with piping on a pink tiled bathroom wall
Photo: DryPot · CC BY-SA 3.0 · Source
Find a pro to do this
Cost Factors in Washington, District of Columbia
What Affects Pricing
- Materials ($675.00-$1,800.00 per project)
- Labor ($525.00-$1,400.00 per project)
- Supplies & Other ($180.00-$480.00 per project)
- Equipment & Disposal ($120.00-$320.00 per project)
Local Price Adjustments
Material costs5.0% above avg
Labor costs4.0% above avg
Frequently Asked Questions
How we price this
BuildX Pro researches and reviews the national price range for Install Tankless Hot Water Heater, then adjusts it to your ZIP code for local labor and material costs using the public data below. Last checked Nov 2026.
- Construction wages by metro and rural area, used for the labor adjustment by ZIP code, U.S. Bureau of Labor Statistics, Occupational Employment and Wage Statistics, May 2025
- Regional price parities for goods, used for the materials adjustment by ZIP code, U.S. Bureau of Economic Analysis, 2024
Get Free Estimates in Washington
Connect with local install tankless hot water heater contractors in Washington for personalized quotes based on your specific project.