With 40+ years of experience, we are the only Commercial HVAC Specialists with the Major Service System™ that customizes solutions to your facility.

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Our Home Comfort Specialists with the Major Service System™ customize residential heating and cooling solutions to fit your unique Colorado lifestyle

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We are the most respected Geothermal experts in the Rocky Mountain Region with over 1,000 systems currently operating as designed!

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Denver HVAC Company

Heating and Cooling Denver Since 1970

We Believe in Doing the Job Right!

Since 1970, Major Heating and Air Conditioning has been providing quality heating and air conditioning to Colorado’s residents and facility managers. And today, we also provide renewable Geothermal for both residential and commercial projects. We are the go-to Denver HVAC company for both residential and commercial heating and cooling services. We strive to provide our customers with the highest quality HVAC service and products at an exceptional value. Our technicians are proficient in up-to-date system installation and service techniques. We take great pride in providing the Denver metro area with quality installations of new equipment and servicing existing heating and cooling systems. We specialize in everything that heats, cools, or looks like it does! We are proud members of the Better Business Bureau, with an A+ rating since 1983.

OUr denver hvac company At a Glance

  • A + Rating with the BBB
  • Premier heating and air conditioning installation and servicing
  • Free estimates on new equipment
  • Customized maintenance plans
  • 24-hour Emergency service
  • EPA, LEED, and NATE certified technicians
  • Over 40 years of industry experience

Customer Reviews

”Earned 5 Stars!“

We called another plumbing & heating company originally, but they couldn’t come out the same day. My father-in-law recommended Major heating since they were local, and he had used them before. I had to pay the higher weekend rate, but it was worth it. The service technician ‘Dan’ came out the same day and got the furnace running. We did run into a minor problem a couple of days later, but Dan came back out and charged us only for the part. I only post reviews when the service is exceptionally good or exceptionally bad. Major earned their 5 stars this time!

Brock M. - Denver
”Responsive and Respectful“

Great company! Very responsive! All the technicians are knowledgeable, courteous, and respectful. They treat your space like it was their own. They have been at our house on weekends and late at night, and have always provided great service with a positive attitude.

Donny P. - Denver
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