13/05/2026
There’s nothing quite like stepping into an air-conditioned space after spending the day outside in nearly 100-degree weather. At that moment, you become grateful for the magic of air conditioning. But is it really magic? Does an air conditioner just push cold air into your room? Not quite.
Believe it or not, central air conditioning systems do far more than cool your home during warm weather. They also reduce humidity and help filter air by pulling allergens and pollutants through air ducts, as well as to the outside. Air Conditioners are dynamic appliances with various moving parts that push air indoors and out.
An air conditioning unit has both a colder and hotter side. Inside, the air conditioning unit consists of an evaporator coil, usually installed on top of the gas furnace inside the home. It also utilizes a thermostat and a fan, which blows gas over chilled coils and into the room (as cold air). The outside unit contains the compressor, condenser, several electrical components, and another fan. This second fan is tasked with blowing hot air outside. The expansion valve, located between the two coils, controls the flow of refrigerant into the evaporator.
