About QC Mechanical

QC Mechanical is EPA certified for refrigerant handling and environmental compliance, a Mitsubishi Diamond Dealer with access to exclusive products and extended warranties, and our technicians hold NATE certifications — the industry's most respected credential for HVAC technicians.

QC Mechanical has over 25 years of experience providing HVAC services in the Puget Sound region. Our team brings deep knowledge of Washington's climate, building codes, and the specific heating and cooling challenges faced by homeowners and businesses here.

Mitsubishi Diamond Dealer is the highest tier in Mitsubishi Electric's dealer program. It means QC Mechanical has met rigorous standards for training, customer satisfaction, and installation quality. It also gives us access to the latest Mitsubishi products, exclusive models, and extended warranty options.

Yes. We provide comprehensive HVAC services for both residential and commercial properties, including offices, retail spaces, restaurants, industrial facilities, and multi-family buildings across King, Pierce, Kitsap, and Thurston counties.

We serve King, Pierce, Kitsap, and Thurston counties in Washington State, including cities like Tacoma, Seattle, Olympia, Bremerton, Lakewood, Puyallup, Federal Way, Kent, Auburn, and Bonney Lake.

We install and service equipment from Mitsubishi (Diamond Dealer), RunTru by Trane, American Standard, Navien, AO Smith, Heat n Glo, and Montigo. Our technicians are trained and certified on all brands we carry.

Yes. All QC Mechanical technicians are fully insured, background checked, and hold relevant industry certifications including EPA and NATE credentials. We hire experienced professionals who represent our commitment to quality and trust.

Yes. All QC Mechanical installations come with manufacturer warranties on equipment plus our workmanship guarantee. As a Mitsubishi Diamond Dealer, we can also offer extended warranty options on Mitsubishi products. Contact us for specific warranty details.