Basic
$3,406 – $7,786 per project
80% AFUE single-stage gas furnace sized to the existing ducts, vented into the existing flue, new gas connection and shutoff, startup checked
How Much Does Install Gas Furnace Cost in Seattle, Washington?
Supply and install a natural-gas furnace (80-95% AFUE) replacing an existing unit on existing ducts, including venting and connection; duct or gas-line extensions extra.
Install Gas Furnace in Seattle, Washington typically costs $4,008 to $9,160 per project as of 2026. Prices reflect local labor and material rates. Use our calculator below for a detailed, ZIP-code-adjusted estimate.
Install Gas Furnace in Seattle, Washington
$4,008 – $9,160
per projectPrices in Seattle are 19.0% higher than the national average for install gas furnace.
National average: $3,500 – $8,000 per project
What you get at each price level
Standard
$4,007 – $9,160 per project
92% AFUE single-stage condensing gas furnace with PVC intake and exhaust venting, condensate drain, new gas connection, startup combustion check
Premium
$5,009 – $11,450 per project
95% AFUE two-stage condensing gas furnace with variable-speed blower, PVC venting, condensate drain, new thermostat wiring, full combustion test
Cost Breakdown in Seattle
| Component | Category | Price Range | Unit |
|---|---|---|---|
| Materials | material | $1,638 – $3,744 | job |
| Labor | labor | $1,641 – $3,752 | job |
| Supplies & Other | supplies | $437 – $998 | job |
| Equipment & Disposal | equipment | $291 – $666 | job |
Prices adjusted for Seattle local market conditions.
Cost Factors in Seattle, Washington
What Affects Pricing
- Materials ($1,575.00-$3,600.00 per project)
- Labor ($1,224.99-$2,800.00 per project)
- Supplies & Other ($420.00-$960.00 per project)
- Equipment & Disposal ($280.01-$640.00 per project)
Local Price Adjustments
Material costs4.0% above avg
Labor costs34.0% above avg
Labor costs in Seattle run proportionally higher than materials, which may favor material-heavy solutions.
Frequently Asked Questions
References
- HVACBase - Furnace Installation Cost (2026), hvacbase.org, retrieved 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 Seattle
Connect with local install gas furnace contractors in Seattle for personalized quotes based on your specific project.