Furnace Replacement Cost in Washington
$3,050 – $8,800We estimate furnace replacement in Washington at $3,050 to $8,800 for a gas furnace on existing ductwork and gas line. The national estimate is $2,950 to $8,350. 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) | $2,500 | $6,500 |
| Labor hours (our assumption) | 6 | 14 |
| Billed labor rate per hour | $91 | $164 |
| Estimated total | $3,050 | $8,800 |
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 | $1,249 – $1,835 | Budget Heating listed prices for 20 gas furnaces, all 80% AFUE, 40,000 to 135,000 BTU. No 90%+ AFUE models were on this list. | Budget Heating |
What other publishers report
| Publisher | Low | High | Scope |
|---|---|---|---|
| This Old House | $3,800 | $10,000 | Gas furnace installed. Page dated June 2026. |
| Today's Homeowner | $3,300 | $7,800 | Gas furnace replacement installed. Page dated September 2025. |
| Bob Vila | $3,800 | $10,000 | Gas furnace installed. Page dated April 2024. |
Cities in Washington
| Metro area | Median wage | Low | High |
|---|---|---|---|
| Seattle | $38.51 | $3,100 | $8,950 |
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
Furnace 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.