Top 10 HVAC Companies in Seattle, WA
The best HVAC companies 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 are licensed, insured, and highly rated for AC repair, heating service, and HVAC installation.
Greenwood Heating and Home Services
Evergreen Home Heating and Energy
Glendale Heating & Air Conditioning
AAA Heating & Air Conditioning
Go Green Heating AC & Electric
Seattle Heating & Cooling
GREENTOP Heating
Seattle Heating & Cooling
Brennan Heating, Air Conditioning, & Electric
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 HVAC repair cost in Seattle, WA?
HVAC repair in Seattle typically costs $150-$450 for common issues like refrigerant recharge, thermostat replacement, or capacitor repair. AC compressor replacement runs $1,200-$2,800. Full system replacement costs $4,500-$12,000 depending on size and efficiency rating.
How often should I service my HVAC in Seattle?
HVAC professionals in Seattle recommend servicing twice a year — spring for AC and fall for heating. Regular maintenance prevents breakdowns during extreme weather and can extend your system's lifespan by 5-10 years.
Do Seattle HVAC companies offer emergency service?
Yes, most top-rated HVAC companies in Seattle offer 24/7 emergency service for no-heat, no-AC, and refrigerant leak situations. Response times are typically 60-90 minutes. Emergency premiums add $100-$250 to standard rates.
What size HVAC system do I need for my Seattle home?
Most homes in Seattle need 2.5 to 5 tons of cooling capacity. A rough guide: 1 ton per 400-600 sq ft depending on climate, insulation, and sun exposure. Always get a Manual J load calculation from a licensed HVAC contractor for accurate sizing.