A HVAC unit is a type of mechanical system that is used to regulate the temperature, humidity, and air quality in a given space. It is composed of several components, including an air handler, evaporator coil, condenser coil, and compressor. The air handler is responsible for moving air throughout the space, while the evaporator coil absorbs heat from the air and the condenser coil releases it outside. The compressor is the part that compresses the refrigerant, which is then circulated through the coils to regulate the temperature. HVAC units are commonly used in residential and commercial buildings to maintain a comfortable indoor environment. They are also used in industrial settings to control temperature and humidity levels in manufacturing processes. HVAC units are an essential part of any building’s infrastructure, as they are responsible for keeping occupants comfortable and safe.