Honest & Dependable HVAC Service & Repairs

DNI Heating, A.C. and Refrigeration, Inc. remains dedicated to value you can trust.

Our wide range of expertise and commitment to quality equipment and workmanship makes us the right choice for new construction installation, upgrades, repairs, and seasonal maintenance. The fully licensed and insured team from DNI Heating, A.C. and Refrigeration, Inc. always finds the best solution based on your specific needs.

A Factory-Trained HVAC Company

Expert Heating & Cooling Services in Longmont, Boulder, Loveland and surrounding areas. Give us a call to learn more about opportunities to improve the comfort, convenience, efficiency, and health of your indoor environment. Our specialties include tankless water heating, home automation systems, radiant flooring, duct sealing, and so much more.

Friendly and Timely Heating and Cooling Services

Professional HVAC Services in Longmont, Boulder, Loveland and surrounding areas

Focusing on honesty and dependability, we won’t sell you something you don’t need. Over our 25 years of service, we’ve set ourselves apart as a reliable source for a satisfying and sustainable end result. DNI Heating, A.C. and Refrigeration, Inc. remains available 24/7 and offers prompt response throughout Longmont, Boulder, and Loveland Colorado.

  • “DNI has amazing customer service. Immediate after hours response, professional and efficient workmen and quality work product.”

    - Linda T.
  • “We have been customers of DNI for over 15 years! They are always on time, do a great job, explain everything.”

    - Kate V.
  • “DNI just finished up working on our house today installing a new AC unit in our attic that heats and cools our 4 bedrooms and 2 bathrooms (7 vents all together) on our second story.”

    - Miriah W.
  • “I've been a customer of DNI for over 10 years, and have always been very happy with the quality of their work.”

    - Editor B.
  • “Truly outstanding service from Mike and his crew with DNI. They were on time, worked hard all day, did a very organized and professional install. They replaced 2 entire HVAC systems in one day.”

    - Joseph D.

Contact Us Today

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Our Reviews
  • “We have used DNI for many many years, thank you for always being reliable and and taking care of us for ALL of our HVAC needs!”

    - Fox R.
  • “Levi 2.0 and Dean were very professional and pleasant. They were also extremely knowledgeable.”

    - Amy B.
  • “Holy Cow!!!! Just when you think quality svc has disappeared, Mike and his crew renewed my faith in humanity!”

    - William B.
  • “The maintenance tech showed up quickly and repaired my furnace problem and also explained maintenance agreement which I signed up for .”

    - Nancy O.
  • “Fabulous service! Angel Rodriguez came to service our furnace and to fix & reroute a leaking humidifier drain. Angel was extremely knowledgeable and did a wonderful job.”

    - Janice C.
  • “Angel was our technician who came to do routine maintenance for our furnace. He was friendly, knowledgeable and greatly appreciated him offering to wear foot coverings on his boots since our carpet is new!”

    - Carol G.