For over 40 years, O'Callaghan Heating & Air Conditioning has been a trusted provider of comprehensive HVAC solutions for the Atlanta, Georgia metropolitan area. Established with a commitment to exceptional service and customer satisfaction, the company has built a strong reputation for reliability and expertise. Serving a wide geographic area that includes Clayton, Cobb, Coweta, Dekalb, Douglas, Fayette, Fulton, Gwinnett, and Henry counties, O'Callaghan Heating & Air Conditioning is dedicated to ensuring optimal comfort and air quality for both residential and commercial clients. Their mission centers on prioritizing the customer, delivering high-quality workmanship, competitive pricing, and a deep understanding of the HVAC industry. This unwavering focus on excellence has cemented their position as a leading HVAC contractor in the region, consistently striving to exceed customer expectations with every service call.
O'Callaghan Heating & Air Conditioning distinguishes itself through a steadfast dedication to customer-centric service and proven expertise, honed over four decades of operation. Their commitment to excellence is evident in their pursuit of customer satisfaction, underpinned by high-quality workmanship, competitive pricing, and profound industry knowledge. The company prides itself on employing professionally trained technicians who deliver top-tier service, utilizing the highest-rated equipment to ensure lasting performance. Clients benefit from a reliable, guaranteed service experience that includes free estimates for system replacements and assurance through equipment warranties. Their incredible reputation, bolstered by a strong emphasis on customer service and a customer-first approach, makes them a go-to choice for HVAC needs in the Atlanta metro area. They are also recognized for their adherence to industry best practices and a commitment to continuous improvement in their service offerings.
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Ocall was out at our place today and as usual - always does a great maintenance job. They keep us running efficiently seaso...
I historically worked with a different company for many years, and when my AC unit stopped working, they left me hanging for ...
These guys were awesome. They came out right away, fixed and explained the issue, and did not look for a way to upcharge the ...
O’Callaghan came out for a courtesy visit to determine if we needed to change our ductwork. Instead, they made some system ad...
My heating system went out last night. I reached out to O’Callaghan around 9A this morning and the technician, Dillon, was on...
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Based on 8 recent reviews
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Serves Atlanta and surrounding areas
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Moderate climate with balanced heating and cooling needs year-round.
Peak Season: June - August, December - February
Tip: Spring and fall are ideal for HVAC maintenance.

