WE BELIEVE IN DOING THE JOB RIGHT! Since 1970, Major Heating and Air Conditioning has been providing quality heating and air conditioning to Colorados 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. 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
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Replacement Boiler

Major replaced our 25 year old Weil MacClean boiler with a Presige Solo unit with a 175K BTU rating. They came to the house and did a thorough evaluation to make sure we would get the heat needed given the existing floorboard radiators. We were promptly put on the schedule and Bill completed the retrofit in outstanding time. A lot of pipes to cut and reconfigure with the slim design of the new unit. It looks great and a very clean and professional job in all respects. I compared the proce of the boiler with what appeared to be the same unit online at Home Depot and was pleased with the pricing.


Very Thorough Job.

When I first bought my house I had Major come out and double check my heating system. The Technician showed up on time and did a very thorough job. In fact they caught that my water heater was failing and leaking carbon monoxide into the room at a dangerous level! (This was overlooked by the inspector only a few days before.) The Technician informed me of what my options were and showed me how and why he got the readings that condemned my unit. I liked that he did that because so often in sales i feel that the sales man is "Up selling"(i know i used to be one) Given the fact that i checked the information that Major gave me on Google and confirmed that my water heater was no longer safe I had Major install a Rinnai for me. They were fairly priced and completed the installation in a timely manor.



I needed them to come out and check to see what was wrong with my furnace. The latest they will come out and look is between 2 - 4pm. I had to take a few hours off work to have them over. At about 3:50 they called to tell me they were 25 minutes away but that they would try to hurry. The didn't call me again until 4:25. At that point I had already called a company that cares about my time.


Great Service

Prompt, professional, knowledgeable, and reasonably priced.They came out the same day I called. I had kind of a trick problem with my boiler, but they were able to figure it out and they didn't charge an arm and a leg. The repair technicians were all very professional and courteous.I'd definitly use them again.


Very reliable and dependable company

I use Major for all my heating and air conditioning needs. You will never find a more honest company out there. You always get a live person when you call that is fully capable of handling your call. They are friendly and a true "family" based business. Every spring and fall they offer specials on tune-ups and what a great value it is. I highly recommend Major Heating to anyone looking for an honest heating or air conditioning contractor.


Very reliable and dependable company

I use Major Heating for all my heating, A/C, geothermal and mechanical needs. I would recommend this company to everyone. Their office staff and technicians are very knowledgable and capable. Fair prices and 24 hour service, what more can you ask for?

More Business Info

We Are Your Heating and Cooling Specialists.

BBB Rating
BBB Rating and Accreditation information may be delayed up to a week.
BBB Accredited businesses follow the BBB Code of Business Practices and pay a fee for accreditation review and monitoring. Accreditation is not a BBB endorsement or evaluation of the business’ product quality or competency in performing services.

BBB Rating and Accreditation information may be delayed up to a week.
Regular Hours
Mon - Sun:
  • Window Air Conditioners
  • Thermostats
  • Central Air Conditioning
  • Radiant Barriers
  • Wall Air Conditioners
  • Central Heating
  • Electric Heat
  • Humidifiers
  • Air Conditioner Parts
  • Heaters
  • Furnaces
  • Air Ducts
  • Air Filters
  • AC Compressors
  • Air Conditioners
  • Fans
  • Dehumidifiers
  • Coils
Payment method
master card, amex, cash, discover, visa, debit
English, Spanish
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