HVAC reviews in Westminster, Colorado

Jonathan with One Hour was fantastic!! Polite, professional, communicative, respectful, thoughtful, intelligent, and extremely hard working. He is clearly committed to customer service and satisfaction. He exceeded our expectations and we are extremely happy with the install and the finished product/work. Highest recommendations!

Joseph C was our technician and he did an excellent, efficient and expedient job! He explained first to us what he would be doing and then when we had questions while he was working he answered those so that when he was finished we knew he completed everything satisfactorily. We even teased him about his pink booties. I realized he was representing Breast Cancer Aware month and was happy that the company supports that! Great job, Joseph and one Hour! Thanks so much!

Tyler and Ivan replaced our ancient heater that died on us with a beautiful, quiet Bryant heating and cooling full system installation in one day! They are a friendly and knowledgeable duo! Great job guys!

We just completed our fall maintenance appt. for our furnace with One Hour Heating and Air Conditioning’s technician, Joseph. He was on time, courteous, professional, and explained a few small adjustments that needed to be made with the furnace. He was knowledgeable and we were very pleased with his service. Thank you One Hour for your great service and technician!

Cameron is a rock star, honest, extremely helpful and friendly. As a new homeowner, there’s a lot of questions and apprehension about “the unknown” and Cameron did a great job of not just getting to the root of my issue, but also helping to get me familiar with some of the”the basics” of knowing the furnace in my new house. Really appreciate him and the work he does, highly recommended.

I called yesterday 2-19-2026about my furnace being out and you installed a new one today 2-20-2026. I appreciate the quick service that you provided to us, and your employees are very knowledgeable and friendly, and took great care of our home and cleaned up everything when they were done, my husband and I will definitely recommend your company in need of heating or air conditioning needs. Thank you,

Anne and James Miller

Great experience! Fixed my HVAC so quickly on the same day I called. It's January, so I was worried about a night with no heat.
The technician solved the problem and gave me advice on ways to avoid it in the future/possible upgrades that were actually practical. Also had an electrician come out separately to check on some issues, and he was very thorough. I'll use them again.

The Service Techs from One Hour are terrific. Always on time, incredibly professional and most importantly they are extremely thorough in their inspection, diagnosis and repair. Glad to have them as a service provider and I highly recommend them.

Joseph provided excellent service. He was kind and professional. He diagnosed the problem, gave us our options on the repair, then obtained the part and completed the repair. This was all done quickly and professionally. Thank u Joseph.

One Hour Heating replaced my furnace two years ago. Tyler Orr came out for the annual maintenance. Tyler took his time going through system and cleaned up the wiring for the next person who encounters it. He replaced the filter, tidied up when his work was complete, and was very respectful of my home and me. He was very pleasant and efficient.

I had a new furnace and ac installed. Jonny and Tyler B did an amazing job from start to finish. They are both very good at what they do. They had to install new lineset for my new system and it came out looking awesome (even the city inspector commented on how good it looks). The sheet metal work on the new furnace that Jonny fabricated looks amazing as well. I will recommend One Hour Heating and Air to anyone and I can't thank Jonny and Tyler B for the awesome job they did!!

Our technician Christopher went above and beyond to help repair our furnace. Staying late and making sure our furnace was good to go before a cold snap was so appreciated. His professionalism and attention to detail was top notch!

Cameron was able to diagnose a problem that was intermittent quickly and then complete repair. All of our interactions w One Hour have been great. Our furnace is on the roof - not everyone is willing to work on that. They have earned our loyalty over years of maintenance and service that is always timely and courteous. Highly recommend.

They were able to come around my schedule. Christian made a point of giving me all details and choices of how much I wanted to do to get my heater working. He explained everything and was very efficient while working and made a point of making sure he didn't do anything to get my carpets dirty.

Michael was great. He came out at the last minute to tune up our furnace and a/c unit. Our furnace is 15 years old and has a humidifier that's never worked well, if at all. He got it going w a simple adjustment. There's also a seperate filter for the humidifier part of the furnace. I didn’t know that. Apparently neither did the half dozen guys we've had over the years who came out and did a reported inspection and cleaning. Ive lived in my house for over 10 years so you can imagine how disgusting that filthy old filter was! We've even supposedly had the humidifier "worked on" a couple times. Michael spotted it right away. He was thorough and took his time, which we appreciated.

Brody was friendly, respectful and professional. He explained everything he was doing and clarified what I didn’t understand. After he a quick inspection, he solved one problem and then troubleshot and found a more complicated issue. He resolved that and stayed through several cycles to make sure there were no other problems. He did a great job.

Christian was awesome. He figured out the issue with my furnace and was able to get it running in a matter of minutes. He is extremely knowledgeable and a pro at what he does. I will definitely recommend your company to all my friends in the Denver area.

Joseph was quick, professional and very helpful. He addressed all of my concerns and gave me assurance that my system was working well, and even offered a few easy maintenance tips that I'll be able to put into practice going forward

As with all of the One Hour team, Anson was polite, cheerful & knowledgeable . He got right to work, chatting with us & wrapped up his task in the time frame he promised.

I am regularly in awe of the level of customer service that the One Hour (and Mr. Sparky) teams offer. It is refreshing to experience

Joseph was swift, efficient, and thorough with his work. He made sure we got our furnace up and running in a timely manner and even went the extra mile to replace parts that seemed suspect of breaking in the near future free of charge. Definitely would recommend him as a technician!

I cannot stress enough the excellent service we received from Tyler and Ivan — an amazing team of HVAC professionals who installed our new furnace and AC unit with expertise, professionalism, and genuine friendliness. As we told them both, good customer service is hard to come by and the level of great customer service that they provided is even rarer. Their workmanship was exquisite; these two take absolute pride in their work and you can tell. We recommend them wholeheartedly and feel fortunate that we got them for this job!