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3458 Buffington Center, Atlanta, GA 30349

HVAC 101

A typical HVAC system is a split unit with two different and specific functions. The first part is the condensing unit. The second is an indoor coil, commonly attached on top of the furnace.

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- Comfort during warm weather

- Cleaner air

- Quieter operations

Benefits of HVAC:

First, the compressor pumps refrigerant using electricity as its power source.  As the indoor air is extracted, the outside air transfers in through the coil which is cooled. The heat from the coil is then pumped outside keeping cool air inside. This results in a comfortable indoor setting.


To learn more contact the pros at O'Callaghan Heating & Air.

The cycle of air


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Be on the lookout for:

- Faulty wiring

- Low refrigerant

- Frozen coils