Residential heating and cooling for Fort Collins homes — and commercial refrigeration for the cafés, liquor stores, and food businesses that keep this city fed. Run by the owner/operator our customers name in their reviews, open 24 hours, and rated 5.0 stars across 23 Google reviews.
5.0 stars · 23 Google reviewsEvery review five stars
Open 24 hoursCall any time, day or night
Heating-first, sized for altitudeZone 5B at 5,003 ft — not sea level
City licensingFort Collins licenses HVAC through the City — ask us for licence details
DNA Refrigeration Heating & Cooling is a Fort Collins-based HVAC contractor. We serve homes across Fort Collins with residential heating and cooling — furnaces, air conditioning, heat pumps, ductless mini-splits and ductwork — and we serve cafés, liquor stores and food businesses with commercial refrigeration, including walk-in coolers and ice machines. We are open 24 hours, 7 days a week, by phone at (970) 932-2324, and our work is rated 5.0 stars across 23 Google reviews, every one of them five stars.
DNA Refrigeration Heating & Cooling is a Fort Collins HVAC contractor with two sides to the business: residential heating and cooling for homes across the city, and commercial refrigeration for restaurants, cafés, liquor stores, and food trucks.
On the residential side we repair, install, and maintain furnaces, air conditioners, heat pumps, and ductless mini-splits — heating first, because Fort Collins is climate zone 5B with 5,797 heating degree days against 624 cooling degree days. On the commercial side, our customers’ own words describe the scope: large walk-in freezers, walk-in coolers, reach-in coolers, ice machines, sandwich tables and cabinets, and food-truck equipment — including one customer with nine locations who relies on us for walk-in installations and maintenance, HVAC installation and maintenance, and ice machine work. The owner/operator is the person customers name in their reviews.
Fort Collins licenses HVAC contractors through the City — ask us for our licence details when you call. Colorado has no state HVAC licence; the state licenses only electricians and plumbers, and HVAC is licensed locally. We pull a mechanical permit where the job requires one, size new equipment from a load calculation, and follow the 2024 I-Codes in force since 1 April 2026. We are open 24 hours, 7 days a week, and the phone is how you reach us: (970) 932-2324.
Fort Collins is a heating town first. We size, repair, and replace equipment for the winters we actually get — and we tell you straight when a repair is not worth the money.
Fort Collins is climate zone 5B: 5,797 heating degree days against 624 cooling degree days (NOAA 1991–2020). At 5,003 ft, gas furnaces derate roughly 10–20% and air conditioners lose roughly 10–20% of their sea-level capacity, so a system sized from sea-level ratings is undersized here. We size from a load calculation, not a rule of thumb.
Colorado has no state HVAC licence — HVAC is licensed by the City of Fort Collins, not the state. Fort Collins licenses HVAC contractors through the City — ask us for our licence details when you call. We pull a mechanical permit where the job requires one, and follow the 2024 I-Codes in force since 1 April 2026, including the ultra-low-NOx furnace rule (HB23-1161) that took effect 1 January 2026.
We publish dated Fort Collins cost ranges with their sources, and we keep a rebate page checked November 2026: Efficiency Works, Xcel heat-pump rebates, PVREA, and the $1,000 Colorado state heat-pump tax credit. The federal 25C/25D credits ended 31 December 2025 and the Xcel furnace rebate was removed 1 January 2026 — we will not quote either as live.
“We had a great experience working with this company. From the beginning, they have been incredibly open and helpful. They took the time to explain everything clearly, answer our questions, and genuinely work with us rather than simply trying to sell us a service. We really appreciate the effort they put into helping us find the best option for our situation. Highly recommend!!”
Hannah Clarka month ago · Google review
“Professional,reliable, honest, and friendly service. Owner operator was top level with his knowledge and skill. Dennis runs a solid business that I most definitely highly recommend.”
Peter Ambrose9 months ago · Google review
“Best fridge repair guy in the business! Dennis always does great work, is priced fairly, responds to messages and requests for work promptly, and always gets us back up and running for our extremely busy café with a lot of refrigeration. I can’t recommend DNA enough.!”
Greg Lefcourta year ago · Google review
No heat, no cooling, or a cooler that quit before the dinner rush. Call DNA Refrigeration Heating & Cooling at (970) 932-2324 — any time, day or night.
Call (970) 932-2324 →Call us at (970) 932-2324 any time, day or night. We are open 24 hours, 7 days a week, and the phone is the way to reach us — there is no contact form and no email address for service requests.