We’re a locally rooted team with over 35 years of experience helping our neighbors stay comfortable year-round. Family-owned and operated, our business is built on trust, hard work, and a genuine commitment to treating people right. Whether it’s a system maintenance or a full system install, we show up with the kind of care and know-how only decades in the business can bring. Around here, you're more than just a customer — you're part of the community we proudly serve.

Mike and Christina Haymon

Let our family take care of yours with reliable service you can trust, in any season.

 

Service Areas:

  • Thornton

  • Westminster

  • Northglenn

  • Commerce City

    We provide honest, reliable heating and cooling services across the Denver metro area. While we primarily serve this region, we’re happy to review requests from nearby areas based on availability.

Real stories. Real customers. Real results.

Haymon Heating and Cooling- They’re not in Erie (Thornton). They replaced my furnace and a/c unit earlier this year. Very professional, BBB A+ rating, competive prices and great service. Would definitely recommend them.
— J.D
Top notch service, no BS! If you are looking for old school type of HVAC company and personable business, Haymon Heating & Air Conditioning is your go to. You will not be disappointed.
— A.D
I had a fantastic experience with Haymon, they replaced my AC unit and handled with professionalism and efficiency.
Mike helped me choose the right system for my home without trying to upsell or pressure me into anything.
They do excellent work, have great customer services, and very fair pricing. I highly recommend them.
— S.M
Haymon Heating and AC was the only HVAC company willing to come out last minute on a very cold night when our heater was broken. Mike was honest and professional and went above and beyond to get our heater back up and running as soon as possible. He didn’t have the part he needed that night and did not charge us for his time late on a Holiday. Had we been able to find someone who had the part who could come sooner than he could, he would not have charged us at all. We weren’t able to find anyone who could get the part sooner so he came back and did a fantastic job. I cannot recommend Haymon Heating and AC highly enough.
— K.B
Haymon Heating & Air Conditioning, LLC. I feel so lucky to have met Christina and Mike Haymon. They are wonderful people who have really taken wonderful care of both my heating and air conditioning needs. I have an old system, and Mike has known just what to do. They are so responsive to my calls and come out very quickly. I very highly recommend them for their honesty, courtesy and their kindness, as well as for their professionalism
— T.P
Mike is so wonderful with quick responses and he is reasonable and honest. He saved us thousands of dollars for a new furnace one year and new AC the next year. Both units are great and our total expense was 6K less than my neighbor paid!
— L.P
My mother and her sister have relied on Mike and Christina Haymon of Haymon Heating and Air Conditioning, LLC., for their HVAC needs for years. When my mom passed away, I had to prepare to sell her home, and in the process, needed some work done on her AC unit. I called Christina in hopes of having it looked at sometime that week. After expressing her heartfelt condolences, she told me that though his schedule was full, Mike would make it a priority to be out that same day! True to their word, he came out, saw that it was a minor issue, and got it back up and running. They bent over backwards to help, and refused to charge me at all for the service! Thank you, Christina and Michael, from the bottom of my heart!!
— J.C
This local small business fixed our A/C at an amazing price with same day service! Completely professional and extremely fast. Please give them a try we HIGHLY RECOMMEND them for fast quality work, very competitive price! They even personally called us the next day to check in to be sure the repairs were still ok and no new issues showing up. Amazing customer service and a very kind family owned business. Please support local small businesses.
— K.B
A black sprint car with a logo for 'Haymon Heating & Air Conditioning LLC' with a phone number on the front, parked on a dirt race track.

We are a company that also loves supporting our neighbors big or small!

Icons of awards with the years 2021, 2022, 2023, and 2024 labeled above them.

We’re proud to be Nextdoor’s Neighborhood Fave for 4 years in a row! Thank you to our amazing community for your continued trust and support — we’re honored to serve you!