You need a trained professional who you can trust with your HVAC unit. The technicians at O’Callaghan Heating & Air will take great care of you and your home or business from conceptualization through completion.

 INSTALLATION SERVICES

  • Heating units
  • Air-conditioning
  • Additional cooling
  • Home humidifiers
  • Whole-house air cleaners
  • HVAC systems
  • For both residential and light commercial property

HVAC CUSTOM DESIGNS

The experts at O’Callaghan Heating & Air have extensive experience and knowledge and HVAC design. We guarantee high quality work, and nothing less.

For affordability, quiet performance, and energy efficiency, we can design and install a system to meet your building’s requirements and budget. Let’s get started today.

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.

BENEFITS OF REPLACEMENT

  • Save money
  • Higher performance
  • Reliability
  • Superior quality
  • Less maintenance
  • Better air quality

MAINTENANCE AND REPAIR

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.

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

Learn more about our furnace services
Learn more about our air conditioning services

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