Service Experts Heating & Air Conditioning
“I've generally been skeptical of HVAC companies because I don't know enough about how the systems work to know when I am being tricked into purchasing products or services I do not actually need.”
Best HVAC Contractors in Westminster, CO
24 companies listed · 17 in Westminster · 8 open 24/7 · 17 open weekends · 22 rated 4.5+
Data verified October 27, 2026
Total Mechanical Solutions LLC
“I signed up for a maintenance contract so my equipment can be cleaned and I can be notified if there is a problem instead of having the equipment stop working.”
Prime Plumbing & Heating Inc.
“Justin was very professional and polite very happy with the service double checked everything gave me advice to prevent future clogs Thank You for your service”
Efficient Comfort: Heating
“But as soon as I saw that their quote was close to the first quote I received I decided they were the HVAC company I was going with… and I'm glad I did.”
Blue Horse Heat and AC
“Another company had told us that we needed thousands of dollars of work (replacement parts, labor, repairs), but he showed us his meter readings and let us watch him work.”
5280 Cooling Heating & Refrigeration
“Back then I was a maintenance technician, and I was told by my supervisor to call them if anything goes wrong with our boiler system, so, I did when I had issues with it.”
The 24 companies listed for Westminster, CO work on furnaces, heat pumps and air conditioners. Each profile repeats what the company publishes about its hours, its license and the equipment it fits, alongside ratings and quotes drawn from public reviews.
Area overview: Westminster, CO
Of the 24 companies we list here, 17 are in Westminster itself and 7 come from towns including Denver (3, 13 mi), Arvada (1, 6 mi) and Wheat Ridge (1, 8 mi). The companies on this page are rated from 3.5 to 5.0 across 7,510 reviews; 10 have 50 or more reviews and 22 are rated 4.5 or higher. When customers rate these companies on specific qualities, they most often praise professionalism (92%), quality (84%) and responsiveness (83%). 8 are open around the clock; 16 are open on Saturdays and 14 on Sundays. The services the companies on this page list most often on their websites are indoor air quality (3), commercial hvac (2), cooling (2) and heating (2). 6 show a license on their websites; 2 list staff certifications (EPA and NATE) and 7 have a BBB rating of A or A+. 12 have ten or more years of experience, the longest 39 years. 10 offer emergency call-outs; 10 offer financing or payment plans; 6 give free estimates; 6 are family- or locally-owned and 10 list coupons or special offers. We count these figures across the companies on this page; distances are straight-line, and hours and prices change, so confirm the details with the company before you book.
Why do some of these firms show another city?
17 of the 24 companies are based in Westminster; the others come from other towns within 15 mi. This trade drives to you, so a shop over the county line is normal. Ask whether your address carries a travel charge.
True Heating & Cooling
“After sharing his expert advice on the options of repairing or replacing the 17-year-old unit, Jophrey came the same day to provide an estimate for a new unit.”
Colorado Eco-Mechanical
“There was a lot of coordination to be done with the electricians, but Daniel and his team communicated timely and effectively with me and the electricians.”
Colorado Custom Service
“They installed new furnace, rooftop A/C, thermostat, & improved ductwork for efficiency and better airflow.”
Roost Heating and Cooling
“It was a pleasure working with Roost heating , had my furnace go out and the tech did a fast trouble shot and found that I had a bad heat exchanger and recommend replacement.”
S&N Mechanical
“While I felt bad to be bothering him while working, I couldn't help but continue talking to him during his work because he is so professional and informative about everything going on.”
Heating Refrigeration & Air Conditioning
“Staff was great and the Owner Rob was nice enough to help offer to show me how to change filters so I can save money as I'm a startup business.”
Energy Services
“Our firm has worked with them on designing chiller replacements, boiler replacements, rooftop unit replacements, etc.”
K&K Home Solutions
“We found Paul through word of mouth from CB realty for an AC install on a roof of one of our townhomes this summer and we extremely impressed and satisfied with his service.”
Wern Air
“Great company, Earl is awesome”
Westminster Heating & Air Conditioning
“I do need to replace the whole system due to its age and have selected Gramps & Sons Heating & Air Repair to do the job as I have had other companies out to service my unit.”
Unity Commercial Hvac & Roofing
“The firm Unity commercial HVAC & Roofing company stands behind the job they do (installation and equipment) and provides excellent customer service, which helped me with all of my AC needs.”
Westminster Heating and Cooling
“719 Heating and Cooling Repair came highly recommended to us by a family friend.”
The Bee Heat & AC
“Not only did he diagnose and fix our issue promptly, but he also took the time to explain everything in detail, ensuring we felt confident in the solution.”
Mighty Plumbing and Heating LLC
“Faucets were installed but the plumber bent the kitchen sink and I had to call a different company to come out and stabilize the kitchen sink in addition to the fixing the bathroom faucet drain that was overly tightened and damaged during install .”
Time Plumbing
“Time Plumbing managed our sewer repair well, and when ancillary issues came up, they put good people on the job to make sure all was completed correctly.”
Tradewinds Heating and Cooling
“The installation and parts cost exactly what they estimated, there were no surprise fees or anything unexpected along the way, which was very much appreciated!”
Mountain Breeze Heating & Air
“I called them and not only did the tech come back after they were closed to take a look, he isolated the problem to a faulty Xcel meter and within the hour Xcel arrived to replace it.”
Coffman & Company Heating and Air Conditioning
“He never tried to push a new water heater on us making me realize that the first outfit, like many out there, are more about revenue then doing the right thing by its customers.”
Why these companies made our list
What customers say about companies in Westminster
- “Polite, professional, diligent crew spent all day installing and then checking to be sure all was in order with our new heat pump.” — customer of Blue Horse Heat and AC
- “I had them install a furnace for me last year and they were prompt, professional, and priced very well.” — customer of Westminster Heating & Air Conditioning
- “Paul, Tracy and Ron showed up on installation day on time and were very friendly and courteous.” — customer of K&K Home Solutions
- “The workmanship is superior. This company has integrity and are so honest.” — customer of 5280 Cooling Heating & Refrigeration
- “Our furnace problem was quickly diagnosed and repaired on the same day.” — customer of Efficient Comfort: Heating
Excerpts from public reviews of the companies listed on this page.
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