The part of an air conditioner that is placed outside the building is called the "condenser unit" or "outdoor unit." This component is an essential part of the split air conditioning system, which consists of an indoor unit and an outdoor unit.
The condenser unit houses the condenser coil, compressor, fan, and other components necessary for the heat exchange process. In cooling mode, the condenser unit releases the heat extracted from the indoor air to the outside environment, allowing the indoor space to cool down. In reverse mode (when the air conditioner is used for heating), the condenser unit absorbs heat from the outdoor air and transfers it indoors to provide heating.
It's important to keep the condenser unit clear of obstructions, debris, and proper maintenance to ensure the air conditioner functions efficiently and effectively. Additionally, the condenser unit should be installed in a location that allows adequate airflow and minimizes exposure to direct sunlight, as these factors can impact the unit's performance and lifespan.