4.6 
411 *The Angi rating for Heating And Air Conditioning Service companies in Frederick, CO is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Heating And Air Conditioning Service needs.
*The HomeAdvisor rating for Heating And Air Conditioning Service companies in Frederick, CO is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Heating And Air Conditioning Service needs.
Last update on July 16, 2026
Serving Frederick, CO and surrounding areas
Approved
In business since 2001
Free estimates
Credit card accepted
"Very Professional and did not hesitate to explain everything in detail. It is hard to find an HVAC company you can trust to show up and do it right the first time and I believe this is one. Will recommend for future jobs!"
Serving Frederick, CO and surrounding areas
Approved
Super Service Award Winner
In business since 2023
Free estimates
Emergency services offered
"Ryan was an excellent HVAC technician. He quickly diagnosed the problem and had our furnace up and running in 20 minutes. I would highly recommend Behold H & C."
+67
Serving Frederick, CO and surrounding areas
Approved
In business since 2009
Free estimates
Emergency services offered
"Absolute 1st Choice will absolutely be our 1st choice. He deserves more than 5 Stars. He found problems that were more serious than the one we hired him to fix. He explained what needed to be done and offered to do it. He made no attempt to "upsell' us on anything. He stayed until the project was completed to our satisfaction. He was well organized, professional and trustworthy. Trustworthiness is the most important thing, without that I might as well have tried to fix it myself. I know that wouldn't have ended well. If you hire a company with a fleet of fancy trucks and prime time TV ads, you can be fairly sure that the service tech will , at some point, magically transform into a a salesman. Thank you, Home Advisor!!!"
Serving Frederick, CO and surrounding areas
Approved (Corporate)
Super Service Award Winner
In business since 1978
Free estimates
Emergency services offered
"Brian, the HVAC technician was professional, friendly and extremely knowledgeable, he provided a full estimate before starting the work and then performed the repair immediately. We were back up and running in minutes. Well Done 1 hr team."
Serving Frederick, CO and surrounding areas
Approved
In business since 2019
Free estimates
Warranties offered
"Elevation HVAC installed a new furnace and A/C system. They were extremely courteous, professional and cost friendly. I strongly recommend Tony and his team for your future heating and A/C needs."
+5
Serving Frederick, CO and surrounding areas
Approved
In business since 2018
Free estimates
Emergency services offered
"Adrian was tremendous! He took on a tough project, never gave up and solved my HVAC problem. Patient, thoughtful, collaborative with pricing. Recommend him without reservation."
+4
Serving Frederick, CO and surrounding areas
Approved
Credit card accepted
"Highly recommend Owen?s company! We scheduled to clean our Air Ducts and the results were incredible! I?ll definitely use them again. If you looking for good quality & honest work, you can?t do better than HighPoint HVAC"
Serving Frederick, CO and surrounding areas
Approved
Super Service Award Winner
In business since 2023
Free estimates
Emergency services offered
"I hired Comfair for my hvac last weekend and I couldn't be happier with the results. Habib was professional, punctual, and knowledgeable. He quickly diagnosed and fixed the issue with my system and his pricing is really reasonable. Highly recommend Comfair with all hvac services."
+3
Serving Frederick, CO and surrounding areas
Approved
In business since 2014
Emergency services offered
Warranties offered
"Quickly worked out a long term problem from an incorrect furnace installation by another installer. Corrected the problem at a very fair price. They are now my preferred HVAC company."
Serving Frederick, CO and surrounding areas
Approved
In business since 2025
Emergency services offered
Warranties offered
"Jason was great! My expansion tank on my water heater blew over night. Jason was quick to respond, charged fairly, and had the new water heater installed same day. Extremely professional and friendly. Highly recommend his services and I will be using him again."
+3
From average costs to expert advice, get all the answers you need to get your job done.
Heat pumps are a popular choice for Denver’s snowy winters and sweltering summers. Find out how much a heat pump costs in Denver, Colorado.
When determining the AC coil cleaning cost in Denver, CO, you’ll need to factor in the size, cleaning method, and type.
HVAC replacement costs in Denver, CO, depend on factors like unit type, size, and labor. See what you can expect to pay for HVAC replacement here.
A central air system is great for someone looking to cool and heat their home all year round. Even if your home uses baseboard heating, you can still make the switch. Read on to learn more about adding central air to a baseboard-heated house.
Try these 12 top tips to keep your air conditioner working at maximum efficiency. Stay cool, and minimize energy costs with this expert air conditioning advice.
Learn how to save money on air conditioning costs this summer by following this handy guide all about your favorite cooling system.
