Mark and Columbia Heating and AC are the consummate professionals, as they were on time and gave us knowledge and info about our furnace and air filtration system. Their quality work and expertise gave us the peace of mind that our heating and air system will run the way it is supposed to, when high demands of winter approach. Thank you guys so much for having our backs when it comes to our home furnace needs !!! It’s great to know their are reputable companies, like yourself that are helping clients with your expertise in the field of heating and air, we really appreciate you guys.

Steve