Ken W.
12/18/2025
Thank you for being so professional and kind on the phone Tonya, and getting us on the schedule...fast. Aaron came and immediately knew the solution. He was professional, patient, fast, and...
A-1 Heating & Air Conditioning Services
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(6)
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107 N 23rd Ave
Greeley, CO 80631
A-1 Heating & Air Conditioning Services, located in Greeley, CO, is a full service HVAC company serving Northern Colorado since 1969. We are proud to be locally owned and operated.We offer residential and commercial heating and cooling services, including HVAC installation, maintenance and repair. We also maintain and repair gas fireplaces. Mobile and modular home owners are welcome! Our highly trained technicians are NATE certified and dedicated to each and every job. We now offer duct cleaning services.Our services include: Air conditioning installation, maintenance and repair Furnace installation, maintenance and repair Boiler maintenance and repair Ventilation maintenance and repair Remodeling as necessary for installation and service Parts and support for do-it-yourselfers HVAC contracting Duct CleaningWe are confident in the quality of our repairs. We give a lifetime labor warranty on all parts that we replace. If a part ever fails, we will replace it at no cost to you. We offer 24 hour service for your convenience!Call A-1 Heating & Air Conditioning Services today for all of your indoor comfort needs.
Reviews
4.5(6)
Susan C.
1/7/2026
Such an excellent company! Aaron has been to my home several times for routine maintenance and is very courteous and knowledgeable. I appreciate the way he explains things to me so I understand...
Chris B.
9/25/2023
Custom work. High quality and fast installation. Easy to work with, owner made sure that the project was handled correctly and backs up his work. Will use again in upcoming projects!
Sandie C.
1/26/2022
We've worked with A-1 Heating and Air Conditioning Services for the past few years. The customer service is always fantastic. The technicians are friendly and professional. They have or can easily...
Chuck W.
3/15/2018
After my first transaction with A-1 I would have given them five stars. Another HVAC company had shown up to replace a bearing in my Carrier furnace, and ended up red-tagging my furnace in the...
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