Boulder County, COBoulder, Longmont & Louisville Cities
720-487-1652
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Heating & Cooling Services in Boulder County, CO

KJ Thomas Mechanical
Air Conditioning
KJ Thomas Mechanical
Ductless Systems
KJ Thomas Mechanical
Air Handlers

Why Choose us?

At KJ Thomas Mechanical, we have built our reputation on quality work and superior customer satisfaction. We hire only highly skilled and technically qualified craftsmen, each of whom is committed to exceeding your expectations and providing friendly, courteous service.

  • Next day installation
  • Performance and satisfaction guarantees
  • Qualified, experienced technicians
  • Licensed and insured
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Testimonial Family

What Our Customers Say about Us

Gail B.

I have used the services of Karl Thomas for three years. He installed an exhaust system for my art studio when I bought my new home, and has checked my furnace each year since then. I also had him install a humidifier on my furnace, so he cleans that and services it as well. I have always found Karl to be trustworthy and fair in his pricing. As a single woman I appreciate having someone come into my home that I know is safe and honest.

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KJ Thomas Mechanical
KJ Thomas Mechanical
KJ Thomas Mechanical