Comfort Aire Window Air Conditioner in Reading – What Is an HVAC Coil?
A heating, ventilation and air conditioning (HVAC) coil is part of an air conditioning and heating system. There are actually two HVAC coils in a typical system. There is a condenser coil in the external air conditioning condenser and an evaporator coil in the indoor unit. The coils are what increase or decrease the temperature and pressure of the coolant gas or liquid before passing it to another section of the HVAC system.
Comfort Aire Geothermal in Reading – HVAC Coil.
To understand how the coils work, one first must understand how an HVAC system works. In simplest terms, the HVAC system pulls hot air into the system, cools it, then distributes it throughout the building. In winter, the system pulls cold air in, extracts the heat from it and passes that heated air through the ductwork in the building. HVAC coils play an important role in this process.
As the cool air is dispersed through the duct system, the cooler, low-pressure gas recycles back to the exterior compressor HVAC coil to start the cooling cycle again.
In winter, an HVAC coil works in the opposite way. The heat pump pulls air in from the outside and runs the air over the evaporator coil. The colder air is warmed by the evaporator coil and then pumped through the ductwork to heat the building. Even though the air outside a building might be freezing cold, the HVAC system is able to pull some heat from it. In fact, an HVAC coil can pull heat from air that is well below freezing.
Mini Split AC in the USA 