Although most of us just think of these appliances as our air conditioner or heater, it’s our HVAC system that heats and cools the air in our home, making our hot summers bearable and keeping the inside of our homes cozy during our infrequent cold snaps. We rely on these systems to keep us comfortable when we are indoors, but few of us know exactly how HVAC systems work.
The four main components of the typical HVAC system are the outside condenser, inside furnace, evaporator coil and duct system. The process of cooling your air starts with the condenser, where the refrigerant is compressed into a liquid and piped inside to the evaporator coil. Air is drawn from the home by the furnace, which blows through the evaporator coil. In the evaporator coil, the refrigerant expands into a gas and becomes very cold, absorbing the heat as it passes through, … Read Full Post »