Most requested
Furnace Repair
No heat, short cycling, or a furnace blowing cold air. Diagnosis first, in plain language — and an honest call when a repair is not worth the money.
Explore →
Heating-first HVAC · Fort Collins, CO
HVAC Company in Fort Collins, CO
Fort Collins is a heating town: 5,797 heating degree days against 624 cooling degree days (NOAA 1991–2020), at 5,003 ft. DNA Refrigeration Heating & Cooling repairs, installs, and maintains furnaces, air conditioners, heat pumps, and ductless mini-splits — and keeps commercial refrigeration running for the cafés, liquor stores, and food businesses that depend on it.
5.0★★★★★23 Google reviews
24hOpen 24 hours · 7 days a week
Phone only — no forms, no email
Call any time, day or night
Tell us what the system is doing, or not doing. We are open 24 hours, 7 days a week.
Call Now (970) 932-2324 → 2757 Sternwheeler Dr, Fort Collins, CO 8052401
5.0 stars · 23 Google reviewsEvery review five stars
02
Open 24 hoursCall any time, day or night
03
Heating-first, sized for altitudeZone 5B at 5,003 ft — not sea level
04
City licensingFort Collins licenses HVAC through the City — ask us for licence details
Heating-first work, sized for 5,003 ft.
Built for better service
A Fort Collins HVAC Company Built for Cold Winters
Fort Collins is climate zone 5B, and the heating season runs October to April. That is why our work leads with furnaces: repair, replacement, and maintenance for the homes that carry this city through winter — and cooling, heat pumps, and ductless systems for the short, hot afternoons that follow.
Nearly half of Fort Collins housing was built before 1990, so a large share of the city is on its second or third furnace and its first or second air conditioner. At 5,003 ft, gas furnaces derate roughly 10–20% and air conditioners lose roughly 10–20% of sea-level capacity — a system sized from sea-level ratings is undersized here, and we size from a load calculation instead. We also work the other half of the business our reviews are built on: commercial refrigeration — walk-in coolers and freezers, reach-in coolers, ice machines, sandwich tables and cabinets, and food-truck equipment.
- ✓ Furnace, AC, heat pump & ductless — repair, install, maintain
- ✓ Commercial refrigeration: walk-ins, ice machines, reach-ins
- ✓ Rebate guidance checked November 2026
DNA Refrigeration Heating & Cooling
DNA Refrigeration Heating & CoolingFort Collins, CO · Open 24 hours
↗
What we do
HVAC Services in Fort Collins
One call covers the whole system: heating, cooling, heat pumps, ductwork, air quality, and controls — plus commercial refrigeration. Every job starts with a real diagnosis, not a guess, and you get the price confirmed before we start work. Heating leads the list, because in Fort Collins it leads the year.
04Furnace InstallationNew gas furnaces installed to the 2026 ultra-low-NOx standard, with a mechanical permit and a load calculation behind the sizing.↗05Furnace ReplacementWhen repair no longer makes sense, a replacement sized for your home and your ductwork — with dated Fort Collins cost ranges on the cost page.↗06Furnace MaintenanceA fall tune-up before the heating season: burners, heat exchanger, igniter, airflow, and the condensate drain that freezes on condensing furnaces.↗07Air Conditioning RepairAC not cooling, blowing warm air, or frozen over. Diagnosis first, then a straight explanation of what it will take to fix.↗08Air Conditioning InstallationNew central AC sized with a Manual J load calculation, installed with a permit and commissioned on day one.↗09AC ReplacementA matched replacement when the old condenser is done — with dated Fort Collins cost ranges so you can compare quotes.↗10Air Conditioning MaintenanceA spring tune-up: coil cleaning, refrigerant and electrical checks, and filters, ahead of the July heat.↗11AC Tune-UpThe pre-summer check: pressures, capacitor health, amp draw, and coil condition before the first hot week.↗12Heat Pump RepairA heat pump that will not heat, will not cool, or keeps switching modes. Diagnosis across both heating and cooling operation.↗13Heat Pump MaintenanceTwice-a-year service for a system that works in both seasons: coils, charge, reversing valve, and defrost.↗14Ductless Mini-Split InstallationWall-mounted heating and cooling for rooms without ducts — historic homes, additions, garages, and bonus rooms.↗15Ductless Mini-Split RepairError codes, lost cooling, or a head that will not respond. Diagnosis from the indoor head to the outdoor unit.↗16Indoor Air Quality ServicesFiltration, purification, and ventilation for wildfire-smoke season and dry Fort Collins winters — MERV 13 and HEPA where they fit.↗17Air Purifier InstallationWhole-home purification mounted in the ductwork, sized to your airflow.↗18Humidifier InstallationWhole-home humidification for dry winters — winter indoor humidity in Fort Collins commonly runs 15–25%.↗19Dehumidifier InstallationWhole-home dehumidification for damp basements and crawl spaces, draining automatically.↗20Duct CleaningDuct cleaning for dust, pet hair, and construction debris in the trunk lines and branches.↗21Duct SealingLeaky ducts waste heated and cooled air. We test for leakage, then seal joints and boots.↗22Duct RepairCrushed flex duct, disconnected runs, and torn insulation — reconnected, re-supported, and re-insulated.↗23Duct InstallationNew ductwork for additions and remodels, laid out so every register gets its share of air.↗24Thermostat InstallationNew thermostats wired and programmed correctly, including the C-wire where one is needed.↗25Smart Thermostat InstallationSmart thermostats set up on your Wi-Fi, with schedules configured — plus the Efficiency Works rebate where it applies.↗26Thermostat RepairBlank screens, wrong readings, or a system that ignores the setting. We test the wiring and the control board.↗27Ventilation ServicesFresh-air ventilation and exhaust for tight modern homes, without throwing away the heat you paid for.↗28HVAC MaintenanceSeasonal maintenance across the whole system — heating in fall, cooling in spring.↗29HVAC InspectionA written inspection of furnace, AC, ductwork, and thermostat for homebuyers and warranty questions.↗30Emergency HVAC RepairNo heat or no cooling, any hour. We are open 24 hours — call (970) 932-2324 any time, day or night.↗31Commercial HVACRooftop units and commercial heating and cooling for Fort Collins businesses, including maintenance.↗32Walk-In Cooler RepairWalk-in cooler and freezer repair for restaurants, cafés, and liquor stores — including compressors.↗33Ice Machine RepairCommercial ice machine repair, maintenance, and installation.↗34Furnace Replacement CostDated Fort Collins furnace cost ranges with scope labels — what 2026 quotes actually look like.↗35AC Replacement CostDated AC replacement cost ranges for Fort Collins, with national context labelled as national.↗36Heat Pump CostHeat pump costs in Fort Collins plus the dated 2026 rebate stack — checked November 2026.↗37Furnace Repair CostFurnace repair cost ranges and the repair-vs-replace framework, with local numbers.↗38Fort Collins HVAC RebatesThe maintained 2026 rebate hub: Efficiency Works, Xcel, PVREA, and the Colorado state credit — checked November 2026.↗
Our standard
Why Fort Collins Homeowners Call Us
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.
Heating-First, Sized for Altitude
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.
How Fort Collins Licenses HVAC
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.
Straight Answers on Cost & Rebates
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.
From call to complete
How Our HVAC Service Works
Tell us what the system is doing, or not doing. We ask a few questions to narrow it down. There is no online form and no email queue — the phone is how you reach us, any time.
The technician tests the system and explains the findings in plain language, with a price confirmed before any repair starts.
We do the work, pull a mechanical permit where the job requires one, and size any new equipment from a load calculation.
Before we leave, we run the system through a full cycle and show you what we did.
STEP 01Call (970) 932-2324
Tell us what the system is doing, or not doing. We ask a few questions to narrow it down. There is no online form and no email queue — the phone is how you reach us, any time.
Call before it gets worse
Common HVAC Problems We Fix
Most no-heat and no-cool calls come down to a handful of failures. Here is what we see most in Fort Collins and how we get you comfortable again.
Ask a pro →AC blows warm air on a 95-degree afternoon
Usually a refrigerant leak, a failed capacitor, or a dirty evaporator coil. We find the leak, repair it, pull a vacuum, and recharge to the manufacturer spec so the system cools like it should.
Furnace lights, then shuts off within a minute
That pattern points to a dirty flame sensor, a failing igniter, or a blocked flue. We clean or replace the sensor, test the ignition sequence, and verify combustion before we call it fixed.
Some rooms never get warm or cool
Duct leakage or a system that was never balanced. We test the ducts, seal the gaps, and adjust dampers so the far bedrooms get their share of the air.
AC unit freezes into a block of ice
A frozen coil means restricted airflow or low refrigerant. We thaw the coil, replace clogged filters, check the blower motor, and correct the charge so it does not happen again next week.
Neighbors recommend us
What Fort Collins Customers Say
“
★★★★★
“Fantastic business! Dennis is amazing, fixes, replaces, installs and knows everything about his profession. He under cut another competitor by $5800 and never exaggerates work that doesn't need doing. Very trustworthy, and very much appreciated. I have another whole AC unit that will need replacing soon, and I know who I'm going to for the job. Thanks!”
JH
James Hadley5 months ago · Google review
★★★★★
“Honestly the very best- we have a large walk in freezer and a few smaller freezers, we have used other heating/cooling companies before but once we switched to DNA, we will never use anyone else for our business. Quick response, knowledgeable, and HONEST work. The BEST!”
DE
Danielle Elliott5 months ago · Google review
★★★★★
“I manage a liquor store in the mountains and Denis responded immediately to my calls to fix our liquor store walk in cooler and service all our coolers, and when the compressor failed over the holidays, he was there the next day to install a new one. Very professional, super helpful, and extremely timely with his work. Would highly recommend!!”
JM
John Marcus9 months ago · Google review
★★★★★
“Denis always does a great job taking care of our 9 locations. Goes above & beyond to make sure our shops stay running smoothly. We have him do walk-in installations & maintenance, HVAC installation & maintenance, ice machine maintenance & installations, preventative maintenance & repairs on all of our sandwich tables and cabinets.”
TL
Tom Loftusa year ago · Google review
★★★★★
“DNA Refrigeration is my go to for refrigeration needs in the Fort Collins area! They have always been prompt in diagnosing and fixing the issue to get us back up and running. I have used them several times in the last few years and the service is exceptional! Family owned and operated is also a huge plus. Fair pricing as well. This is the company I call when I have a cooler emergency and need it fixed ASAP!”
JS
Jared Schergera year ago · Google review
★★★★★
“Dennis is great. Doesn't give up till the job is done right. He really takes pride in his work. I highly recommend him.give him a call.you won't be sorry. He's like family from the minute you meet him.”
SU
Sue3 months ago · Google review
Local by design
HVAC Service Across Fort Collins
We cover Fort Collins from Old Town to the Harmony Corridor and the towns around it. Fort Collins publishes no official neighbourhood list, so the areas below are a mix of City plan areas, commonly used area names, and subdivisions — each with its own page and its own housing story. If you are searching for an HVAC company in Fort Collins, start with your area below.
8052180524805258052680528
Not sure you’re in range? Call with your ZIP code — we’re always happy to check.
From our blog: Furnace replacement cost in Fort Collins · Heat pump vs furnace for Fort Collins winters · What to check before hiring an HVAC pro
FORT COLLINS
AREA
Old Town Fort CollinsCampus WestMidtown Fort CollinsRigden Farm
DDDDD
AREA
Primary service zone
Good questions
HVAC Fort Collins CO Questions
The questions we hear most from Fort Collins homeowners, answered straight.
(970) 932-2324 →Contractor-quoted Fort Collins furnace installs ran $7,000–$10,000 in 2026 (Lion, Fort Collins) for ultra-low-NOx models under the HB23-1161 rule, and modelled ranges put a 95–96% AFUE furnace at $5,270–$8,640 (NumeralQ, October 2026). National averages are lower — Angi’s $2,823–$6,897 — but they are not a Front Range price. See our furnace replacement cost page for the full dated ranges.
Yes, when they are cold-climate models sized for 5,003 ft. ENERGY STAR cold-climate heat pumps hold at least 70% of capacity at 5°F, and the most common Front Range setup is dual-fuel: the heat pump carries most of the heating hours and the gas furnace covers the coldest nights. See heat pump installation.
Yes. We are open 24 hours, 7 days a week — call (970) 932-2324 any time, day or night, for a no-heat or no-cool emergency. We do not publish a response-time promise; call and we will tell you honestly what we can do.
As of November 2026: Efficiency Works / Fort Collins Utilities heat-pump rebates, Xcel heat-pump rebates for Xcel gas customers (cold-climate $1,500 per heating ton since 1 October 2026), PVREA for co-op members, and the $1,000 Colorado state heat-pump tax credit (at least $333 passed to the customer as a discount). The federal 25C/25D credits ended 31 December 2025 and the Xcel furnace rebate was removed 1 January 2026. See our rebate hub, checked November 2026.
No. Colorado has no state HVAC licence — the state licenses only electricians and plumbers. HVAC work in Fort Collins is licensed by the City of Fort Collins under its contractor licensing system. Ask us for our licence details when you call. Any company advertising a “Colorado HVAC licence” is describing a licence that does not exist.
Ready when you are
Need HVAC Help in Fort Collins Today?
No heat, no cooling, or a system making a noise it should not. Call DNA Refrigeration Heating & Cooling at (970) 932-2324 — any time, day or night.
Call (970) 932-2324 →
Phone only — no forms, no email
Get in Touch
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.
Call anytime(970) 932-2324
Visit us2757 Sternwheeler Dr, Fort Collins, CO 80524
HoursOpen 24 hours · 7 days a week