A Outdoor HVAC system is an air conditioning and heating system that is installed outside of a building. It is used to cool and heat the building and regulate the temperature inside. The system is made up of several components, including a compressor, condenser coils, and an evaporator coil. The compressor compresses refrigerant vapor that is used to transfer heat from the inside of the building to the outside. The condenser coils help to remove the heat from the refrigerant vapor and transfer it to the outside air. The evaporator coil absorbs the heat from the outside air and transfers it to the inside of the building. The outdoor HVAC system is used to maintain a comfortable temperature inside, while at the same time keeping energy bills low. It is important for homeowners to understand the definition of an outdoor HVAC system and how it works in order to ensure their home is comfortable and energy efficient.