Top 10 Gas Furnace Repair in Seattle, WA
The best gas furnace repair services in Seattle, WA for 2026 include Greenwood Heating and Home Services (4.9), Evergreen Home Heating and Energy (4.8), Glendale Heating & Air Conditioning (4.8). All diagnose and repair gas furnaces same-day with upfront pricing.
Greenwood Heating and Home Services
Ballard Natural Gas Service
Glendale Heating & Air Conditioning
Seattle Heating & Cooling
AAA Heating & Air Conditioning
Gene Johnson Plumbing
Evergreen Home Heating and Energy
Seattle Heating & Cooling
GREENTOP Heating
2 Sons Plumbing, Sewer, Septic, Electric, Heating & Air
How We Ranked These Seattle Pros
Our rankings are based on a weighted evaluation of five key factors:
- Licensing & Insurance — All listed businesses hold active state licenses verified through official databases.
- Customer Reviews — We aggregate ratings from Google, Yelp, and the BBB, weighting recency and review volume.
- Response Time — Companies offering same-day or 24/7 emergency service score higher.
- Pricing Transparency — Businesses who offer flat-rate pricing or free estimates rank above those with opaque billing.
- Experience & Longevity — Years serving the Seattle market and breadth of services factor into overall reliability.
Rankings are reviewed quarterly. Have a correction? Contact us.
Frequently Asked Questions
How much does gas furnace repair cost in Seattle?
Gas furnace repair in Seattle costs $100-$400 for common issues (ignitor, thermocouple, blower motor). Heat exchanger replacement costs $500-$1,500. Diagnostic fee is $75-$150, usually applied to repair.
Why is my gas furnace not heating?
Common causes: dirty filter restricting airflow, faulty ignitor or pilot light, bad thermostat, tripped safety switch, or gas supply issue. Check the filter and thermostat first — these fix 30% of no-heat calls.
Is a cracked heat exchanger dangerous?
Yes — a cracked heat exchanger can leak carbon monoxide into your home. If diagnosed, shut off the furnace immediately. Replacement costs $500-$1,500 but if the furnace is 15+ years old, full replacement is usually more cost-effective.