Condensing unit
Short definitionThe refrigeration unit outside the room that houses the compressor and the condenser.
It is the side that rejects the heat the evaporator picks up from the room. It goes outside the room, somewhere it can draw in and discharge air freely: on the roof, on an outside wall or on a stand at ground level.
When choosing its location, think about the length of the pipe run, access for service and keeping the hot discharge air from being drawn back in. A unit placed in a closed, unventilated space cannot deliver its capacity.