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3458 Buffington Center, Atlanta, GA 30349

Time to swap the system

Whether you have a system fail or need a system update, the experts at O'Callaghan Heating & Air can help you replace your old system with a more efficient and reliable HVAC system.

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- Save money

- Higher performance

- Reliability

- Superior quality

- Less maintenance

- Better air quality

- Contact us today to get started!

Benefits of replacement

Some HVAC systems don’t need to be replaced. Many just need some TLC. The expert technicians at O'Callaghan Heating & Air are experienced with a number of brands and can provide regular maintenance and service to keep your HVAC system running smoothly.


Let us know how we can help.

Maintenance and repair


Call for a

FREE estimate!


When you need an honest, reliable heating and air-conditioning service, there is one place to call.