Amazing service!! We had to have our AC removed so concrete could be poured and these guys did an…read moreexcellent job. They were extremely thorough, knowledgeable and communicative throughout the entire process. I think our ac actually works better now than it did before we had it removed and reinstalled!! Would highly recommended!

Very prompt. 8-10am window on a Saturday and was here shortly after 8. Very personable and…read moreknowledgeable. Pricing was very good. Definitely recommend.

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. ​

Long time customer, had service scheduled for two weeks. Got call 2 hours before the appointment…read moreand said they had to cancel, another more important job came up, they could reschedule in another week.... no thanks. I always paid my bill on time, why is a long time customer not at the top of your list. Will find someone else.

This company was randomly contacted on my behalf through Yelp Projects. I submitted a thorough…read moredescription and photo of the (very simple) work - replace a leaking 90-degree shark bite fitting at my water meter. Limelight refused to provide a quote, saying they "had to have a tech on site" to give me an estimate; wouldn't even ballpark it or tell me the callout fee. Beware if these folks come up on your Yelp Projects.

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.

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.

Great job as always! Love that they call me to set up times as reminders for all of the annual…read moreservice calls.

Hunter came out to do an AC Tune Up at our place of business. He was on time, professional and very…read moreknowledgeable! We enjoyed working with him!