Seattle HVAC contractors specialize in high-efficiency electric heat pumps, ductless mini-splits, central air conditioning, and 24/7 emergency gas furnace repair across Puget Sound. Compare the top 10 WA L&I licensed heating and cooling companies in Seattle with verified ratings, typical project costs ($350–$14,500), and direct phone numbers.
“Premier Carrier and heat pump installer across King County with transparent load-calculation quotes.”
“Over 100 years serving Seattle homes with same-day furnace repair and PSE rebate-eligible heat pump upgrades.”
“One-stop heat pump electrification team—handles both the HVAC unit and the 200A subpanel in one day.”
“Over 30 years designing custom hydronic radiant heating and variable-speed Carrier heat pump systems.”
“North Seattle favorite combining licensed electrical panel upgrades with high-SEER heat pump installations.”
“Specialists in converting legacy Seattle oil furnaces to whisper-quiet Daikin and Mitsubishi heat pumps.”
“Deeply trusted in Ballard, Magnolia, and Queen Anne for historic Seattle home retrofits and ductless systems.”
“Whole-home building science approach combining duct sealing, airflow balancing, and high-efficiency heat pumps.”
“Mitsubishi Diamond Contractor status delivering extended 12-year warranties on multi-zone mini-splits.”
“The Pacific Northwest’s largest mechanical engineering powerhouse for both residential and commercial HVAC.”
Explore detailed service descriptions, typical Seattle & King County price ranges, and project timelines for the most common hvac & heating/cooling services performed by licensed local contractors:
Heat pumps are the #1 heating and cooling upgrade for Seattle homeowners due to our mild, damp winters and increasingly warm summers. Modern variable-speed inverter heat pumps (Mitsubishi Hyper-Heat, Daikin, Carrier, Bryant) extract ambient heat from outdoor air even down to sub-freezing temperatures while providing high-SEER central air conditioning in July and August. Replacing an aging gas or oil furnace in Seattle frequently qualifies for $1,500–$4,000+ in combined Puget Sound Energy (PSE), Seattle City Light, and Clean Heat rebates.
Many classic Seattle Craftsman, Tudor, and mid-century homes in Ballard, Queen Anne, and Capitol Hill were built without central ductwork or have uninsulated crawlspace ducts. Multi-zone ductless mini-split systems mount discreetly on walls or recessed ceilings, delivering room-by-room temperature zoning, whisper-quiet operation (as low as 19 dB), and up to 40% lower electric heating bills compared to baseboard heaters.
When a furnace fails during a January cold snap in Puget Sound, licensed HVAC technicians diagnose and replace igniters, flame sensors, blower motors, inducer draft fans, control boards, and cracked heat exchangers. Top Seattle HVAC providers stock universal and OEM parts on their service trucks for single-visit restoration and perform carbon monoxide safety testing on every gas appliance.
Whereas fewer than 35% of Seattle homes had air conditioning a decade ago, summer heat domes and wildfire smoke seasons have made whole-home cooling essential. If your home already has a forced-air gas furnace in good condition, an HVAC contractor can add an outdoor AC condenser and indoor evaporator coil directly to your existing ductwork.
Pacific Northwest dampness promotes mold spores in winter, while late-summer wildfire smoke pushes Seattle AQI to hazardous levels. Whole-home MERV-16 media air cleaners, hospital-grade HEPA bypass filtration, UV-C germicidal lights, and Energy Recovery Ventilators (ERVs) keep indoor air fresh and allergen-free without losing conditioned heat.
Thousands of historic Seattle homes still rely on cast-iron hot water radiators, hydronic radiant floors, or legacy underground oil tanks. Specialized Seattle mechanical contractors service high-efficiency condensing combi-boilers and decommission old oil furnaces in compliance with Seattle municipal carbon reduction codes.
In the Seattle metro area, a ductless mini-split or central heat pump installation typically ranges from $5,800 to $15,500 before Puget Sound Energy (PSE), Seattle City Light, and federal tax rebates of up to $2,000–$4,500.
Leading providers including Greenwood Heating & Home Services, Bob’s Heating & Air Conditioning, Blue Flame Heating, and SeaTown maintain 24/7 emergency dispatch fleets across Seattle and the Eastside.
Yes. Seattle’s winter design temperature is roughly 23°F to 28°F. Modern cold-climate inverter heat pumps operate at 100% heating capacity down to 5°F and continue producing heat well below 0°F without needing backup resistance strips.