My HVAC Tech

Commercial HVAC Contractors in Washington

Browse Washington's top-rated commercial HVAC companies. Whether you manage a single office building or a portfolio of industrial facilities, My HVAC Tech connects you with licensed, insured contractors who specialize in commercial systems.

Verified reviewsLicense & insurance checkedServing all of WA

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Seattle

Featured Contractors in Washington

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HVAC Angel Seattle Heating & Air Conditioning

Google Reviewed

Seattle, WA

24/7 Available·Split System · Heat Pump · RTU+3
Multi-Site
on Google

HVAC Angel Seattle serves commercial buildings 24/7 with licensed techs for RTUs, VRF, boilers & heat pumps across a 25-...

Alexander's Heating & Air Conditioning

Google Reviewed

Seattle, WA

Heat Pump · Split System · VRF+3
Service Agreements
on Google

Alexander's Heating & Air Conditioning — Redmond, WA. 25+ yrs serving Seattle commercial HVAC, 4.8★ rating, VRF, RTUs, h...

HVAC & Refrigeration LLC

Google Reviewed

Seattle, WA

RTU · Split System · Boiler+3
on Google

HVAC & Refrigeration LLC serves commercial buildings across Seattle, WA — rooftop units, chillers, heat pumps, boilers &...

OCEAN PARK MECHANICAL

Google Reviewed

Seattle, WA

RTU · Chilled Water · AHU+3
Multi-Site
on Google

Ocean Park Mechanical — Tukwila, WA commercial HVAC contractor servicing RTUs, chillers, boilers & VRF systems for offic...

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Commercial HVAC Services in Washington

Frequently Asked Questions — Commercial HVAC in Washington

How do I find a licensed commercial HVAC contractor in Washington?

Washington requires commercial HVAC contractors to hold a state contractor's license. Use My HVAC Tech to filter for verified contractors — we confirm license numbers directly with the WA licensing board. Always verify that the contractor carries general liability insurance and workers' compensation before signing a contract.

What should I expect to pay for commercial HVAC service in Washington?

Commercial HVAC costs in Washington vary significantly based on system type, building size, and service complexity. Routine maintenance contracts typically run $150–$400 per unit per year. Emergency service calls average $300–$800 for diagnosis and basic repairs. System replacements for rooftop units range from $8,000–$35,000 depending on tonnage.

Do commercial HVAC contractors in Washington offer 24/7 emergency service?

Many commercial HVAC contractors in Washington offer 24/7 emergency response, particularly those serving healthcare, food service, and data center clients. Use the "Emergency Service" filter on My HVAC Tech to find contractors with confirmed after-hours availability.

What commercial HVAC certifications should I look for in Washington?

Look for NATE (North American Technician Excellence) certified technicians, which validates hands-on HVAC competency. For refrigerant handling, EPA Section 608 certification is federally required. In Washington, commercial work typically requires a state contractor license. Manufacturer certifications from Carrier, Trane, or Lennox indicate authorized service capability.