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UniColorado
Opens Fri 8 AM

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

Don't be stuck in the heat.

Denver Air Conditioning Repair

If you're experiencing issues with your air conditioning, our team of AC repair specialists is ready to assist. We expertly diagnose and resolve a wide array of AC problems, from refrigerant leaks to malfunctioning thermostats. With our reliable and trusted AC repair services, we'll quickly restore your system's efficiency and your comfort.

Call to Schedule

Schedule by Phone

For air conditioning repair, please call us directly to schedule an appointment.

Note: We service single-family homes only. No condos, multi-family, or rooftop units.
(303) 250-1000
BBB A+ RatingMitsubishi Diamond ContractorNATE CertifiedHomeAdvisor Top RatedYelp 5-Star Rating
Green Business Colorado
BPI CertifiedGoogle Guaranteed

Denver AC Repair Services

HVAC technician servicing outdoor AC unit in Denver

Denver Air Conditioning Repair

Repair service for central air conditioning units that don't work.

$120 diagnosticFast responseAll brands

How It Works

Brands We Install

Carrier Dealer
Lennox
Trane
Carrier Dealer
Lennox
Trane

Stay Cool with UniColorado

See What Sets Us Apart

A fully functional air conditioning system isn't optional during a Colorado summer. Our technicians diagnose and repair all residential AC brands, from failed capacitors and refrigerant leaks to compressor replacements and control board failures. Every service call starts with a $120 diagnostic where we identify the problem and present your options with upfront pricing before any work begins. If the repair cost approaches the value of the system, we'll tell you straight and can discuss replacement options so you can make an informed decision. For systems that are running but need a tune-up, see our AC maintenance service.

Your SatisfactionIs Guaranteed

Our Homeowners Love Us

We're proud to consistently achieve 100% homeowner satisfaction. That's the UniCo way.

5.0
Google Reviews (138)

Cori A.

The only company I will use for my heating and AC needs. Always responsive, on time, polite, and friendly.

Google Review

Mark K.

I was so pleasantly surprised by how amazing my experience was with UniColorado. Thorough, honest, and personable, this company gets it. They’ve earned my business for as long as I live in Denver, and I’d like to thank them again for their great work servicing our outdoor A/C units.

Google Review

Mikayla N.

The second time this company has been out to fix something going on with our HVAC. They've really done a great job correcting issues caused by the original home builder and explaining things in detail. I won't call anyone else for our HVAC needs. 10/10 would recommend!

Google Review

Talon J.

Legitimately the best HVAC company I've ever dealt with. They did super clean work and were super professional the entire time.

Google Review

Colorado's Most Experienced Heat Pump Installer

We service all major AC brands: Carrier, Lennox, Trane. $120 diagnostic fee, waived if you go ahead with the repair. Upfront pricing on every job. Existing customers only.

Mitsubishi hyper-heat install, Colorado 2013
2013

Our first hyper-heat install

Lennox heat pump install 2016
2016

Early Lennox cold-climate adoption

Bosch IDS Ultra heat pump install
2024

Bosch IDS Ultra install

Latest cold-climate heat pump installation 2026
2026

Latest cold-climate tech

30+

Municipalities

Master

Licensed & Certified

1000s+

Happy Homeowners

AC 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

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Air Conditioning Diagnostics

Common Air Conditioning Issues (and what to do first)

Before requesting professional help, there are a few things you can try yourself. If your outdoor AC unit isn't turning on, or your AC lines are freezing up, our troubleshooting guides walk you through initial steps. Understanding common AC problems can help you recognize when you need our help.

When to act fast

AC Compressor & Refrigerant Issues

The compressor and refrigerant circuit are the heart of your air conditioning system. Compressor problems tend to escalate quickly, so recognizing the warning signs early can save you from a more expensive repair or a full system replacement.

AnsweringYour Common Questions

Frequently Asked Questions

Common questions about AC repair in Denver. Can't find what you're looking for? We're a phone call away.

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