Most central air conditioners are connected to a home’s forced-air distribution system. Thus, the same motor, blower, and duct work used for heating are used to distribute cool air from the air conditioning system. When a central air conditioner is operating, hot air inside the house flows to the furnace through the return-air duct. The hot air is moved by the blower across the cooled evaporator coil in the plenum and is then delivered through ducts to cool the house. When the air conditioner works but the house doesn’t cool, especially during humid summer evenings, the problem is probably in the distribution system meaning high humidity, low air flow, dirty filter or evaporator coil, possibly a loss of Refrigerant charge.
In Burbank, Illinois, there is only one name to turn to for your A/C tune-up or evaluation and that’s us here at Around The Town Heating and Air Conditioning.