One Hour Heating & Air Conditioning® of St. Louis

They were able to get a technician out very quickly. He was friendly efficient and a job. Well done.

They squeezed me in because my heating went out. My house was 50 degrees and my pups were about to turn into pupsicles. Rob the technician was extremely friendly, efficient, and early. He was here for a total of maybe 30 minutes and had my heat working.

Excellent and professional all the way. My issue was a gas leak and was in a very hard to find location. But they found it and fixed it. Very happy with the service.

I needed a new furnace after a full system installation in June. Brett was responsive from the outset and addressed my issues in a professional, friendly and timely manner. Rob, our technician was outstanding technically and in his ability to communicate as the project was being started through completion.

I would recommend Dunn to anyone seeking anything from a minor repair to a full HVAC installation.

Service man came out right away in below zero temperatures. Found the issue immediately and advised us the next steps they will be taking for repair. Service was quick and courteous! Thanks.

Robert was friendly and professional and we would be happy to have him again.

Bob Fitzgerald was a terrific mechanic!!! He was helpful polite and friendly. We appreciate all his good work!!!

Thought the unit needed repaired, turns out it just needed maintenance! Our filter and coils were very dirty, could have overheated the unit! The technician was very professional and honest.The bill was affordable, he saved our air conditioning unit! We had purchased the unit from Dunn four years ago. They did an amazing job, quality unit. Very happy with Dunn!

Incredibly pleased with the service here! AC went out in august (of course), they had a rep out the next day. Robert was very friendly and professional, had the problem solved and part replaced in under 15 minutes, and all-in the visit was under $200. Will definitely be using them in the future!

Mr.Farrell was fantastic!!
Not only did he perform the heating check, installed the new thermostat, but he also confirmed that our humidifier hasn't worked since installation.

He said that a part was needed, put in an order for it, and Informed me that a schedule date is forthcoming.

He would have checked to see if the cooling system was connected to the thermostat but with an ambient temperature of 58 degrees, it wouldn't start.
KUDOS!!!!