Commercial HVAC

Established in 1997, D.N.I. Heating, A.C. and Refrigeration, Inc. was founded on commercial services. Locally owned and operated, we provide business owners in Longmont, Boulder, Loveland and surrounding areas with a dependable source for a full range of commercial HVAC options. From new construction design/installation and replacement to repair and maintenance, we optimize the safety, comfort, health, productivity, and efficiency of your facility. Our fully licensed and insured team of professionals are qualified and up-to-date with all types of commercial equipment, including boilers and packaged units.

Trust in D.N.I. Heating, A.C. and Refrigeration, Inc. for all your commercial heating & cooling services!

We invite you to call us at 303-772-2490 for prompt action and sustainable results. Our extensive resources, including an in-house sheet metal fabrication shop, and wide range of expertise ensures customized strategies and swift turnaround.

Contact us for commercial HVAC installation & repair

D.N.I. Heating, A.C. and Refrigeration, Inc. minimizes disruption of your everyday operations through organized project management and strives to streamline your operations to save both time and money. Let us introduce you to modern innovations, resolve concerns, and put control at your fingertips. The team from D.N.I. Heating, A.C. and Refrigeration, Inc. is available to you 24/7. We maximize comfort across Longmont, Boulder, and Loveland Colorado.

What our clients are saying

R. Larson

Extremely happy with my decision to use DNI. Installed cash price of my new furnace & AC unit was about 23% lower than the competition. Chris was very knowledgeable, conscientious, and top notch! The whole crew was excellent!

D. Johnson

This crew has saved me on multiple occasions. From heating to ac service they have done it all for me. Always great customer service and a quick response time! Thanks for the continued great service DNI!

K. Kitten

Trustworthy, fair and will advocate for their clients. Whether it is maintenance or replacement DNI is wonderful. As a small business, the options are limited and expensive for replacing a unit that is original to the building. Chris L. worked exceptionally hard to ensure that our needs were met, ultimately finding the most cost effective solution.

M. Southworth

DNI Heating got out to my house, assessed the problem and installed a new furnace for us within hours on a Friday afternoon. We did not have to worry about the 0 degree temperatures coming in that weekend. The service was great from the minute I called to helping us register our furnace.

J. Jacobs

The service personnel were top-notch – friendly, professional, and dealt with some unexpected issues without missing a beat! Plus, they were dog lovers and made friends with my best buddy Highly recommended!

R. Barcklow

DNI and Chris specifically were amazing. My furnace went out with the first Colorado storm and they were able to come out the next day and provided me with honest, transparent service so I could make the best decision for my budget. There was never any pressure from Chris between buying a new furnace and fixing my old one. I felt like they were patient and willing to work with me and my needs. I would highly recommend DNI for heating services.

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Save today with our special offers

At D.N.I. Heating, A.C. and Refrigeration, Inc. our goal is to make your residential or commercial property more comfortable, and to help you save money. We are happy to provide you with the following special offers!

Special Offers

$300 Off

New Residential Evolution Furnace -or- A/C Installation


This coupon cannot be combined with any other offers.