Thermostat Replacement Cost in Washington
$120 – $580We estimate thermostat replacement in Washington at $120 to $580 for one standard or smart thermostat on existing wiring. The national estimate is $100 to $510. Washington HVAC technician pay is 24% above the national median, ranking 7 of 51.
| Part of the job | Low | High |
|---|---|---|
| Parts and materials (our assumption) | $30 | $250 |
| Labor hours (our assumption) | 1 | 2 |
| Billed labor rate per hour | $91 | $164 |
| Estimated total | $120 | $580 |
Our estimate, not a quote. Billed rate is the Washington median wage from BLS (2025, $36.38 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 |
|---|---|---|---|
| Parts | $139 – $259 | ecobee's listed prices for its three new smart thermostats. No non-smart model was priced, so this does not cover the low end of the job. | ecobee |
| Labor hours | 1 – 2 | Typical replacement 1 to 2 hours; Fixr also says most professionals finish in under 1 hour. | Fixr |
What other publishers report
| Publisher | Low | High | Scope |
|---|---|---|---|
| Fixr | $85 | $300 | Typical range, thermostat replacement. Page dated February 2026. |
| Fixr | $50 | $150 | Manual thermostat installed on existing wiring. Page dated February 2026. |
| Fixr | $200 | $500 | Smart thermostat installed. Page dated January 2025. |
Cities in Washington
| Metro area | Median wage | Low | High |
|---|---|---|---|
| Seattle | $38.51 | $130 | $600 |
Who can legally do this in Washington
HVAC is one of the regulated contractor specialties in Washington, and each specialty requires its own registration with the Department of Labor & Industries.
Compared with neighboring states
Other HVAC technician jobs in Washington
Thermostat 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.