About

KJ Thomas Mechanical is a Colorado heating, cooling, air conditioning, and furnace service and maintenance company located in Boulder County, CO. KJ Thomas Mechanical employs the best technicians to replace or repair your air conditioner, furnace, boiler, or ductless air conditioning system. We’re proud to serve Boulder CO, Louisville CO, Broomfield CO, Lafayette CO, Niwot CO, Erie CO, Longmont CO, Dacono CO, Frederick CO, Firestone CO, Mead CO, Lyons CO, Berthoud CO, and Superior CO. We are certified Trane and Mitsubishi dealers and service all brands, including Carrier, Bryant, Payne, Trane, Lennox, Rheem, Ruuud, Amana, Mitsubishi and Goodman.

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