The evaporator coil is one of the HVAC system components located indoors that receives the condensed refrigerant liquid from the compressor. The liquid refrigerant is atomized by spray nozzles that increase the rate of evaporation of the refrigerant when exposed to the hot air of the room. Found inside your home's air handlers, the evaporator coils are an important part of a larger air conditioning or heat pump system.
Through multiple expansion valves and tiny nozzles, it sprays to help the refrigerant change from liquid to gas faster, leading to the absorption of heat, which in turn creates the cooling effect you experience during summer. During the process, your system's fan blows hot air through return ducts over the evaporator coils.
After all the heat is removed, it distributes the conditioned air through ductwork to the rooms in your home. Next, the AC unit then sends the heated refrigerant back to the compressor to start the cooling cycle again. To complete the entire cooling process, hot air passes over the evaporator coil, causing condensation.
As a result, this action lowers indoor humidity levels, making the home feel cooler during hot weather. If you have asked your heating and air conditioning service contractors to install heat pumps instead of standard air conditioners, you may still be able to live comfortably inside your home regardless of the conditions outside.