Currently not accepting new repair/service customers
At this time, UniColorado Heating & Cooling is not accepting new repair or service requests from first-time customers. We are currently prioritizing existing clients and scheduled projects to ensure we maintain our high standard of service. We truly appreciate your interest and encourage you to check back with us in the future, as our availability may change.
Existing customers: (303) 250-1000
Licensed & Certified Furnace Repair Specialists
Denver Furnace Repair
Our furnace repair specialists at UniColorado are ready to address and resolve any heating problems you may encounter. From routine maintenance to straightforward repairs, we have you fully covered. At UniColorado, we guarantee that certified expert technicians will service all brands and furnace models at reasonable rates.
Schedule by Phone
For furnace repair, please call us directly to schedule an appointment.
Furnace Repair Service In Denver

Denver Furnace Repair
Repair service for furnaces that don't work or have issues.
How It Works
Brands We Install

Diagnostics
Common Furnace Issues
You DeserveThe Best
See What Sets Us Apart
Diagnose First, Quote Second
We figure out what's actually wrong before we talk about money. Our technicians run combustion analysis, check gas pressure, and test safety controls. You get a clear explanation of the problem and your options before any work starts.
Honest Repair vs Replace Advice
If your furnace is worth repairing, we'll repair it. If the repair cost approaches replacement value, or if we find a cracked heat exchanger, we'll tell you straight. We don't upsell replacements on fixable systems.
Altitude and Age Expertise
Furnace problems in Colorado often trace back to altitude. Incorrect orifice sizing, combustion air issues, and venting problems are more common above 5,000 feet. We've seen every failure mode these conditions produce.
Common Parts On-Hand
Our trucks carry ignitors, flame sensors, pressure switches, blower motors, and control boards for the brands we see most often. Many repairs are completed the same visit without a second trip for parts.
Your SatisfactionIs Guaranteed
Our Homeowners Love Us For Denver Furnace Repair
We're proud to consistently achieve 100% homeowner satisfaction. That's the UniCo way.
Ann M.
Had an estimate from a company that Costco uses. I was quickly convinced to switch to another product because that one had class action lawsuits. Received a $28k and was pressured to sign. Found UniColorado from an AI search and they not only saved me 5k on the total but, I have a much better furnace!! Great service, installation, follow-up and communication. Would recommend!! ⭐⭐⭐⭐⭐
Matt T.
UniColorado has great customer service. They installed an ac and furnace for me. They additionally have come out and answered any questions I have. Their whole operation is great.
Aaron H.
The entire team with UniColorado worked tirelessly to get our new AC/Furnace installed. Understanding that we were working with a tight time frame, the guys got the job on the schedule quickly, and then went above and beyond to make sure everything was right after a couple of things didn't go according to plan. Could not recommend UniColorado more.
Robin M.
Brian arrived early today to look at a furnace problem I had with one of my furnaces. Turns out it was in the thermostat, which he replaced. He noticed that the furnace needed a tune-up. I asked him to look at the second furnace also, since I had them installed at the same time. It also needed a tune-up. He was pleasant and respectful of my home. He explained everything about the problems and quickly and efficiently completed the tasks. I took his card because I want to remember to call UniColorado again for all of my furnace needs.
Colorado's Most Experienced Heat Pump Installer
We service all major furnace brands: Carrier, Lennox, Trane, Rheem, American Standard. $120 diagnostic fee, waived if you go ahead with the repair. Existing customers only.

Our first hyper-heat install

Early Lennox cold-climate adoption

Bosch IDS Ultra install

Latest cold-climate tech
30+
Municipalities
Master
Licensed & Certified
1000s+
Happy Homeowners
Furnace Certified
Technicians
100% Satisfaction
Guarantee
Up Front Pricing
No hidden fees
$5M+
Saved for homeowners in 2025
$9,250
Average savings
5,000+
Rebate applications submitted








Making the right call
When to Repair vs. Replace
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