Basic
$1,245 – $3,469 each
Standard-flow tankless unit matching the existing fuel and vent type, reconnected to gas, vent and water lines, new isolation valves
How Much Does Tankless Hot Water System Cost in Washington, District of Columbia?
Supply and install one whole-house tankless water heater (like-for-like swap, unit and labor); new gas line, venting or electrical upgrades push higher.
Tankless Hot Water System in Washington, District of Columbia typically costs $1,465 to $4,081 each as of 2026. Prices reflect local labor and material rates. Use our calculator below for a detailed, ZIP-code-adjusted estimate.
Tankless Hot Water System in Washington, District of Columbia
$1,465 – $4,081
eachPrices in Washington are 5.0% higher than the national average for tankless hot water system.
National average: $1,400 – $3,900 each
What you get at each price level
Standard
$1,465 – $4,081 each
Higher-flow tankless unit, same fuel and vent type, isolation valve kit with pressure relief valve, inlet sediment filter
Premium
$1,831 – $5,102 each
High-flow tankless unit with built-in recirculation pump, isolation valve kit, scale-prevention filter and app-capable controller
Cost Breakdown in Washington
| Component | Category | Price Range | Unit |
|---|---|---|---|
| Materials | material | $662 – $1,843 | each |
| Labor | labor | $510 – $1,420 | each |
| Supplies & Other | supplies | $176 – $491 | each |
| Equipment & Disposal | equipment | $118 – $328 | each |
Prices adjusted for Washington local market conditions.
Cost Factors in Washington, District of Columbia
What Affects Pricing
- Materials ($630.00-$1,755.00 per unit)
- Labor ($490.00-$1,365.00 per unit)
- Supplies & Other ($168.00-$468.00 per unit)
- Equipment & Disposal ($112.00-$312.00 per unit)
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 Tankless Hot Water System, 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 tankless hot water system contractors in Washington for personalized quotes based on your specific project.