Steve and the rest of the crew went out of their way to help me in a very difficult situation. The…read moreservice , support, and value was outstanding. I would recommend them to anyone that's looking for any heating and air work . I've used many companies in northern Colorado but I will keep using them from now on.

They showed up in a timely manner the diagnosis was, as I suspected, a bad fan motor on the…read morecondenser coil. They wanted $880 to replace it with no warranty and said my unit was obsolete and they wanted me to instead spend $18k on a whole new system. Gtfoh..... I'm do it myself.

Great customer service and they do a thorough job when checking all of your systems whether it is…read moreAC or a plumbing problem. I had a plumbing problem and they are able to come out the same day and then they fixed it that same week little downtime.

Great company did our plumbing for our basement finish. Price is reasonable. All plumbers were…read morevery professional and respectful.

Russ was very courteous and worked hard to figure out a problem on my persnickety furnace. He also…read moreoffered to work with me on payment when others wouldn't. ​

A great group of people, Sean, Seth, Spencer, Curran, all of them. And Sean, will spend all the…read moretime it takes to help you understand the fears, answer questions, about such a large purchase, the guys are super polite, left my basement more tidy! Than it was before, and even worked on a holiday to help me. They did have to come back due to recalled part, but they show up, when they say, they will be here. Sadly, customer service is hard to get, but not with this company. Not all things go perfect, but way they handled things, is why, 5 stars. Updated! Chase! Was amazing also, i may have gotten one of guys names mixed up, but every single one of em, hard working on time and so polite, i thank you all.

While I appreciate the Rush reference, it had nothing to do with my overall experience…read more After a clog I couldn't clear or snake myself, I had them out to look and they quickly determined it was a grease clog and needed a different method to clear. We scheduled the work, they came and did it at the price quoted, and were super friendly. Presto, problem sorted. After a couple of poor experiences in the past with other Fly by Night plumbers who were Nobody's Hero, it was nice to have it done quickly with a professional crew. Thanks for everything -- highly recommend.

Super appreciated Chris the electrician helping us troubleshoot our electrical issue today…read more Professional and ver efficient, highly recommend!

I've worked with them for several yrs.& they are very professional & competent. I received some…read moretext msgs.in the past few days, it looks like ALLEN SERVICE has gathered some of my annual check information & are trying to take away some of your clientele! Just so you know, I told them they had no business getting access to my info.I don't know if your computer has been hacked.I will be contacting you in the next few days for my annual maintenance service.Thank you.​

Our air conditioner died last night. I called these guys because their website said they didn't…read morecharge for emergency (after-hours). Within an hour of my call a repairman had arrived. He looked at our HVAC and told us what was wrong with it (the motor went out) but he also noticed a warranty sticker from another company. He said that this would probably be covered by them and told us he wasn't going to charge us for the service visit since he didn't do any repairs. The whole process was them was very easy and professional.

Thank you for being so professional and kind on the phone Tonya, and getting us on the…read moreschedule...fast. Aaron came and immediately knew the solution. He was professional, patient, fast, and charged a reasonable price. We were not looking forward to the cold nights with no heat, and you kindly made our day and all of our holidays warm with your attention to detail, rapid response, and exquisite knowledge of ...everything. Thank you to Tonya, Aaron, and A-1. You all are amazing.

I am an 80 year old widow. I own a home in greeley but live in Denver. When having all power…read morerestored & inspected, was distressed to find out that the gas water heater would not light. Aron , of A-1 Heating & searched all possible reasons and found a part that had been installed incorrectly/ He then cleaned the gunk & Stuff and fired up my old water heater before the Freezing temperature hit tonight. Thanks to Aron for trouble shooting and great communication with Me.. MS P.White. 1/30/26

I have used this company for over 20 years. they have always been completely professional, prompt…read moreand dedicated to problem-solving. When the company changed hands several years ago, I was worried that the service might decline, however, I have used them twice in the last three years and the service was exceptional both times. The last service date was approximately two weeks ago. Our technician Nate was awesome. I would highly recommend these guys for your heating and cooling needs.

We have used this company for years at our dog grooming business. They are always prompt and…read moreefficient. Very good at explaining what the issues are and how they can fix them. We would definitely recommend them.

Jake came for our annually scheduled AC maintenance tune-up. He showed up on time and was very…read morefriendly and courteous throughout the visit. We thought the air conditioner seemed to be working fine, but he noticed that it wasn't working as efficiently as it should be. Jake took apart the system and diagnosed what was causing the AC to work a little harder than it needed to, preventing future problems.

Hunter from Ft Collins Heating and Air Conditioning was fast, informative, and got everything…read morerunning correctly. He arrived at the beginning of the window, which was helpful for us, but also followed up on prior service mayters to make sure everything was still working. This was just a scheduled maintenance appointment, but I was impressed at Hunter's memory of what we'd had done in the past.