Longmont, CO - HVAC Services

Situated between Boulder and Loveland, Longmont is well-known for gorgeous views of Longs Peak, outdoor adventure, an inspiring local art scene and great brews. Left Hand Brewing Company and Oskar Blues Brewery, two of Colorado’s largest craft breweries, call Longmont home, adding to a cidery, four distilleries and nine more craft breweries. Whether you want to hike, bike, kayak, paddleboard, snowshoe, golf, camp, fish, shop or dine on any preference of cuisine, there’s something to appeal to everyone.

Heating Installation in Longmont, CO | AC Repair

From browsing locally grown produce at Longmont Farmers Market to ice skating at Longmont Ice Pavilion or enjoying the thrills of the Mile-Hi Skydiving Center, the changing seasons bring new options for activities and scenery. With average temperatures dropping into the low teens and soaring to 89 degrees, heating and cooling is a necessity. Covering everything from AC repair to furnace installation, D.N.I. Heating, A.C. and Refrigeration, Inc. is your premier HVAC service provider.

Furnace Repair ∴ Heating Service ∴ Longmont, CO

Locally owned and operated, D.N.I. Heating, A.C. and Refrigeration, Inc. takes pride in achieving superior temperature control, energy efficiency, indoor air quality and reliability for Longmont home and business owners. Our expertise covers residential and commercial heating, cooling, refrigeration, water heating, boilers, restaurant equipment and so much more. As a Bryant Factory Authorized Dealer, we continue more than 25 years of dedication. Call 303-772-2490 to schedule skilled service, including 24/7 emergency assistance anywhere throughout Mead, Longmont, Firestone, Frederick, Loveland, Berthoud, Johnstown, Erie, Lafayette & Louisville, CO.

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!

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!

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.

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.

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.

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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.

Heating Installation, AC Repair & Furnace Repair in Longmont, CO

Heating ServiceAir Conditioning RepairAC RepairAC ServiceHVAC Installation ∴ Longmont, CO