We're O’Callaghan Heating and Air, and we're here to help with the heating and cooling systems in your home or office.  Our combination of skills and services will make us your best choice.  All O’Callaghan technicians are factory trained and certified and we offer flat rate pricing that lets you know up front how much a job will cost.  We serve the greater Atlanta area and can provide same-day or next-day service in most cases.

Service
In the event that your equipment needs servicing, you have peace of mind knowing we're only a phone call away. We offer emergency service and free estimates on equipment.

Installation
We can install or design any type of heating or cooling system required in your home or light commercial building. We install high-efficiency comfort systems designed to be the most cost-effective on the market and geared to your particular property.

Advanced Technology and Efficiency
You can get 30% energy efficiency savings in offices up to 50,000 feet with new HVAC systems. Ask us about the latest technology for your particular needs.

Prevention
To save on utility bills and service calls, we urge you to take a preventive approach to heating and cooling. All of your heating and cooling systems should be included in a regular inspection and maintenance.

Whether you own a commercial or residential building, whether you need installation or service, our goal is to provide you with key environmental systems expertise. You should be at ease and in control — a feeling of confidence and comfort that we are happy to help you establish and maintain.