APH Service, Inc.

While a cooling system that's too small is an obvious problem, many people don't realize that systems that are too large also pose problems as well. A system that is too large will not have to run very frequently to cool your home. That means it will cycle on and off frequently, which uses up more energy.

The typical central air conditioning system is a split system, with an outdoor air conditioning, or “compressor bearing unit” and an indoor coil. Using electricity as its power source, the compressor pumps refrigerant through the system to gather heat and moisture from indoors and remove it from the building.