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Expert Residential Home Heating & Air Conditioning Services

Dependable heating and air conditioning services for your home. Create a place of comfort for you and your family.

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Residential Heating and Air Conditioning Service Locations

A-1 Heating and Air Conditioning Services provides professional, experienced, heating and air conditioning services to your homes. We partner with homeowners to ensure their HVAC equipment is up to par and ready to perform in the ever-changing Colorado climate. When you work with us, you can expect professionalism and exceptional customer support. As we care for your HVAC system, we seek to build a long-standing partnership with you, so that we can work with you for years to come. You can count on our skilled team to provide you with the service you need, keeping your heating and air conditioning system running flawlessly. 

Areas We Proudly Serve


What our Customers are Saying:

Jonathan White
Jonathan White
A1 did an excellent job on our furnace and ac replacement after our old unit failed. The new unit also seems to be keeping the temp better regulated and the filter already looks filthy indicating it is doing its job unlike the last setup. I really appreciate everyone that works here and what they do! Update: at my new house I had them assist in putting ducting in the basement as I work towards finishing it. They were prompt and courteous and the work was excellent as always.
Misty Urban
Misty Urban
Update 2/15/2022: I will continue to rave about this company! Super fast and friendly service! They ALWAYS find the problem and have been so kind and understanding every time! The Owners are wonderful and they do a fantastic job finding wonderful employees to represent their company! I still continue to ONLY use A-1 and recommend them any chance I can get. ............... A-1 has always been Fantastic to do business with. We got our central A/C system installed by them and they even came out to inspect it when things weren't working right. Turns out the issue was user error but they did such an amazing job of being patient with us to explain the issue, educating us on how to better care for our system, and even made sure the entire unit was updated and running smoothly before they left. They are fast in their responses and their 24 hour service is great highly recommend A-1. We won't use anyone else!
MollyKeith Carlisle
MollyKeith Carlisle
I have used this business twice now to repair and tune my furnace. Both experiences have been exceptional. Both of the guys who came at the two different appointments were extremely courteous, very professional, knowledgeable, and timely. For both appointments I have had they were able to come to my home based on what worked best with my schedule and were very flexible. They arrived when they said they were going to and fixed everything that needed to be fixed without taking an entire afternoon. They explained things in a way that made me feel like I understood what was being worked on without feeling like I was being talked down to. I will continue using this company for all of my air conditioning and furnace tuneup and needs in the future!
Aaron did such a super job for us and was so energetic and friendly. He quickly diagnosed the problem, fixed it and assured us that he would return if needed. I am sure he even saved us some money. He called ahead and arrived on time. Can't say enough about this young man and his work ethic.
Aaron Noyes
Aaron Noyes
29 year old furnace went out in my rental property. A-1 Heating and Air promptly came to do a service call I wanted done and service tech Aaron informed me a new furnace was going to be needed. Got the new furnace seamlessly scheduled for replacement and promptly installed by tech Hunter,new furnace is quieter, more efficient then the old one A-1 installed 29 years ago. Very proffesional service !
Fisher Landscaping
Fisher Landscaping
Aaron has been great to work with! Thank you for the Quick response time and very professional. Thank you A-1 Heating!

Send us your heating and air conditioning questions or to set up a time for our team to come out. 

Weld County Trusted HVAC Company

We serve clients across the state from our office in
Greeley, CO. We are licensed in all of our services.