Water Heater Replacement Cost in Washington
$790 – $2,200We estimate water heater replacement in Washington at $790 to $2,200 for a 40 to 50 gallon gas or electric tank in the same location. The national estimate is $750 to $2,050. Washington plumber pay is 27% above the national median, ranking 8 of 51.
| Part of the job | Low | High |
|---|---|---|
| Parts and materials (our assumption) | $600 | $1,500 |
| Labor hours (our assumption) | 2 | 4 |
| Billed labor rate per hour | $97 | $175 |
| Estimated total | $790 | $2,200 |
Our estimate, not a quote. Billed rate is the Washington median wage from BLS (2025, $38.96 an hour) times 2.5 to 4.5 to cover payroll costs, overhead, travel and profit. How we estimate
What our assumptions are based on
| Item | Sourced figure | Basis | Source |
|---|---|---|---|
| Labor hours | 1 – 3 | 1 to 3 hours for a standard tank installation. | This Old House |
What other publishers report
| Publisher | Low | High | Scope |
|---|---|---|---|
| Fixr | $550 | $2,300 | 40-gallon tank installed. Page dated January 2026. |
| Fixr | $700 | $2,500 | 50-gallon tank installed. Page dated January 2026. |
| This Old House | $600 | $1,200 | 40-gallon tank installed. Page dated June 2026. |
| This Old House | $700 | $1,800 | 50-gallon tank installed. Page dated June 2026. |
Cities in Washington
| Metro area | Median wage | Low | High |
|---|---|---|---|
| Seattle | $45.78 | $830 | $2,300 |
Who can legally do this in Washington
All plumbing contract work must be performed by a Licensed Plumbing Contractor, and each must designate a certified plumber. General contractors may do plumbing work only if they also hold a plumbing contractor license.
Compared with neighboring states
Other plumber jobs in Washington
- Toilet Replacement
- Faucet Replacement
- Drain Cleaning
- Garbage Disposal Replacement
- Tankless Water Heater Installation
- Pipe Repair
- Whole-House Repipe
- Sewer Line Repair
Water Heater Replacement cost in every state · Washington home repair guide
Sources
General information, not professional advice. Conditions, codes and prices vary. Turn off power, gas or water before any work, and hire a licensed professional when in doubt. Cost figures are our estimates, not quotes.