Compressor Diagnosis and Replacement
The compressor is the most serious single point of failure in a walk-in. We test it, and where it has failed we replace it — as we did the next day for a liquor-store cooler over the holidays.
Walk-in coolers and freezers, repaired
Walk-In Cooler Repair Fort Collins When Cold Storage Fails
A walk-in cooler that will not hold temperature is a business emergency: stock is at risk, service stops, and every hour costs money. DNA Refrigeration Heating & Cooling repairs walk-in coolers and freezers for Fort Collins restaurants, liquor stores, cafés and multi-location operators. Call (970) 932-2324 any time, day or night — we are open 24 hours, 7 days a week.
Walk-in coolers and freezers, kept cold.
About this service
Walk-In Cooler and Freezer Repair for Fort Collins Businesses
Our walk-in work is the work our customers describe: a large walk-in freezer and smaller freezers for one business, a liquor-store walk-in cooler with a compressor replaced the next day over the holidays, and walk-in installations and maintenance across nine locations.
A walk-in cooler is a room-sized refrigerator, and it fails in a handful of ways that any refrigeration technician recognises: the compressor stops, the evaporator fan stops moving air, the thermostat or controls stop calling for cooling, the door does not seal, ice builds up where it should not, or refrigerant has leaked and the system can no longer move heat out of the box. Diagnosis means working through those possibilities in order — checking temperatures, listening to the compressor, testing the controls — rather than replacing parts at random.
The compressor is the heart of the system, and its failure is the most serious fault a walk-in can suffer. One of our customers manages a liquor store in the mountains: when the walk-in cooler compressor failed over the holidays, we were there the next day to install a new one. That is the standard we hold ourselves to — a walk-in that has lost its compressor is a business that cannot trade, and it comes first.
Walk-in freezers add their own problems. A freezer runs colder, ices up faster, and punishes a door left ajar or a seal that has gone hard. Defrost cycles, door gaskets and air movement matter as much as the compressor itself: a freezer that ices over its evaporator coil cannot move air, and a freezer that cannot move air cannot hold temperature. Maintenance means keeping those parts working together — clean coils, sealed doors, fans turning, controls calling for cooling at the right temperature.
Installation matters as much as repair. A walk-in that is installed well — panels sealed, refrigeration lines run properly, the condensing unit placed where it can reject heat — gives years of steady service. A walk-in installed badly gives years of call-outs. Our multi-location customer has us do walk-in installations as well as maintenance across nine shops, and that repeat work is the best evidence we can offer that the installations hold up.
Refrigerant handling follows EPA Section 608 rules as a general industry requirement: refrigerant is recovered and handled properly, and a system that has lost refrigerant is checked for the leak rather than simply topped up. That is a statement about how refrigeration work is done, not a claim about a credential held by any individual.
HVAC work in Fort Collins is licensed by the City of Fort Collins, not the state — Colorado licenses only electricians and plumbers at state level. Fort Collins licenses HVAC contractors through the City — ask us for our licence details when you call.
- ✓ Walk-in cooler and freezer repair
- ✓ Compressor replacement
- ✓ Walk-in installations and maintenance
- ✓ Multi-location commercial customers
What’s included
What Our Walk-In Cooler Repair Service Covers
Walk-in work is refrigeration work at room scale. Here is what the service covers.
Temperature and Control Checks
A walk-in that runs but will not hold temperature is often a control, sensor or thermostat fault. We check what the system is actually doing before replacing anything.
Evaporator Fans and Airflow
Cold air has to move around the box. A failed evaporator fan or an iced-over coil stops that movement, and the walk-in warms up even though the compressor is running.
Door Seals and Ice Build-Up
A door that does not seal lets warm, moist air in, and that air becomes ice on the coil. We check gaskets and door fit as part of walk-in work, because a new compressor cannot fix a leaking door.
Walk-In Installation
We install walk-in coolers and freezers, including for multi-location operators. Panels, refrigeration lines and condensing-unit placement are done so the box holds temperature from the first day.
Planned Maintenance
Regular maintenance — checking operation, cleaning coils, testing controls — is how a nine-location operator keeps nine walk-ins running instead of nine emergencies.
How it works
What to Expect From a Walk-In Cooler Repair Call
Call (970) 932-2324 and tell us whether it is a cooler or a freezer, roughly how large it is, and what it is doing. We are open 24 hours, 7 days a week.
We check the temperature in the box, listen to the compressor, test the controls and fans, and find the fault rather than guessing at it.
We explain what failed and what the repair involves, and where the walk-in is old or the repair is large, what replacement of the failed component — or the system — would involve.
We carry out the agreed repair, then check that the walk-in pulls down to temperature and holds it through a full cycle.
For businesses with several walk-ins or several locations, we talk through a maintenance schedule so the next failure is caught on a planned visit, not during service.
STEP 01Call and Describe the Walk-In
Call (970) 932-2324 and tell us whether it is a cooler or a freezer, roughly how large it is, and what it is doing. We are open 24 hours, 7 days a week.
Problems we solve
Walk-In Cooler Problems We Fix in Fort Collins
A walk-in that will not hold temperature puts stock and service at risk. These are the problems we see.
Ask a pro →Walk-in warming up
The box runs but the temperature climbs. We work through compressor, controls, fans and refrigerant in order to find the fault.
Compressor failure
The most serious walk-in fault. We diagnose a failed compressor and replace it — one liquor-store compressor was replaced the next day, over the holidays.
Freezer icing over
Ice on the evaporator coil stops air moving and the freezer warms up. We check defrost, door seals and airflow to find why the ice is forming.
Door not sealing
A hard or torn gasket lets warm air in around the clock. We check door fit and seals as part of walk-in work, because no repair holds if the door leaks.
Customer reviews
What Fort Collins Customers Say
DNA Refrigeration Heating & Cooling holds a 5.0-star rating across 23 Google reviews. These reviews are quoted verbatim from Google.
★★★★★
“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 ElliottBusiness customer
✓ 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 MarcusLiquor store manager
✓ 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 LoftusCommercial customer, 9 locations
✓ Google reviewCall (970) 932-2324. Keep the door closed as much as possible, note the temperature if you can, and do not keep loading warm stock into a box that is already struggling. We are open 24 hours, 7 days a week.
Yes. One customer’s liquor-store walk-in cooler compressor failed over the holidays and a new compressor was installed the next day. Compressor replacement is part of our walk-in repair work.
Yes. We carry out walk-in installations and maintenance, including for a multi-location customer with nine shops. Call to talk through the size and layout of the space.
No. Every walk-in is a different job — different size, different refrigerant, different fault — so we do not publish prices. Call (970) 932-2324 and tell us about your walk-in and the fault.
Ready when you are
Walk-In Cooler Repair in Fort Collins
Call (970) 932-2324 any time, day or night. Tell us whether it is a cooler or a freezer, what it is doing, and how much stock is at risk — we will talk through the next step with you.
Call Now (970) 932-2324 →
Get in touch
Get in Touch
Call (970) 932-2324 any time, day or night. DNA Refrigeration Heating & Cooling is open 24 hours, 7 days a week, for Fort Collins homes and businesses. There is no email address for the business, so the phone is the way to reach us.
Call anytime(970) 932-2324
Office hoursOpen 24 hours · 7 days a week
Address2757 Sternwheeler Dr, Fort Collins, CO 80524