For three generations, O’Callaghan Heating and Air Conditioning, Inc. has been family owned and operated. Our company has been serving our customers with reliability, integrity, and honesty for over 40 years and still continues to do so. We strive to bring all of our customers the best possible service while creating a trustworthy relationship. Our professionally trained technicians and our excellent customer support is dedicated to provide you with the highest level of customer service in the Metro Atlanta area. You will find that our quality work and superior knowledge of the industry are all key factors to our success and positive customer feedback. We offer only the best heating and air conditioning needs to both residential and commercial properties. Excellence is our standard.

Why Choose Us

  • Family Owned & Operated
  • Locally Owned & Operated
  • Fully Licensed & Insured
  • Professionally Trained & Certified Field – Technicians
  • Free Consultations On Upgrades & – New Systems
  • Upfront Straight Forward Pricing, No – – Hidden Fees!
  • Top Of The Line Warranties & Guarantees
  • Can’t Pay All At Once? Financing Options Available!
  • We Bring Over 40 Years Of Excellent Service With An Outstanding Reputation!
READY FOR YOUR NEXT HEATING OR COOLING PROJECT?

Contact us to get a quote and see why our customer service is recognized as the best in the industry.


Proudly serving all of Metro Atlanta for over 40 years

We serve your area!

  • Clayton
  • Cobb
  • Coweta
  • Dekalb
  • Douglas
  • Fayette
  • Fulton
  • Gwinnett
  • Henry

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YOU COME FIRST, NO QUESTION

Our high quality work, competitive pricing, and superior knowledge of the industry are all key factors that contribute to our continuous customer satisfaction. We offer the top of the line heating and air-conditioning (HVAC) services to both residential and commercial properties. Excellence is our standard.

RELIABLE, GUARANTEED SERVICE

  • Excellent Customer Service
  • Professional Trained Technicians
  • Highest Rated Equipment
  • Competitive Pricing
  • Top Quality Work Performed
  • Free System Replacement Estimate
  • Equipment Warranties
  • Incredible Reputation

Learn more about us