O'Callaghan Heating & Air Conditioning

Outstanding service. I received an honest quote from Jordan who was communicative and worked with me in order to get the best service for my home. The installation of our new unit was scheduled 4 days from the quote and 2 technicians showed up early. They were very polite and worked the entire duration they were at my home. They explained everything and were very knowledgeable. They provide a 1 year free service with their installation. I am very happy to have chosen their service.

We’ve been O’Callaghan customers for about 30 years. Same experience every time. Prompt. Reliable. High quality service. And that starts at the top from Dennis and Becky. None better. First and only number to call.

Bobby came out to check out entire system and he did a super good job. Great folks to work with so far! Ask for Kelly she keeps it all in order

O'Callaghan came out to fix a leak I had in my AC system. They were able to make it out same-day. My service technician Carl was great. Immediately diagnosed the problem, explained the fix, and repaired all in a very short period of time. Pricing was reasonable and work top notch, as is typically the case with O'Callaghan. Highly recommend them for anyone needing HVAC service in Atlanta.

The professional (Mr. Antonio) was very respectful to me and my guest, and very knowledgeable during the diagnostic test. He gave honest and wise advisory options for me to make the right decision.
Thank you for coming over and checking on the equipment. Once my family and I had made a final decision, I'm sure to contact the company again.

Have a great day 🤙🏽

We have used this business for years to maintain our older unit. We knew we would be needing a new one, so they were our first call when it was time. Dennis, Dylan, Jordan, Jackson and ALL the guys are very professional and friendly. They are timely, and clean up after themselves. They installed our new unit perfectly and pretty quick. It was as painless as buying a new AC can be. They are the only people we trust. There is no nonsense, just honest, good work.

The technician, Wally, was great. He was professional and efficient. He explained the situation and resolved it.
I’m happy to be a Callahan customer!!!

We are new customers, now 2yrs.
The response time & professional staff, from the office to our tech has been GREAT. Looking forward to many more years. Thank you, The Henderson Family

Always get great service with Carl. Getting ready to move and will call and get new contract. This will be the 4th house I’ve had O’Callaghan service!

Great service! They were at our office the next day after I called and the service tech was very professional and thorough. The owner came out the next day to follow up with our office. They will be back out to repair our problems this week. Will definitely use them again and start a maintenance program with them.