The MRCOOL MCAESAS4T1821AA Signature Series 18K Air Conditioner Condenser is an outdoor HVAC unit designed to provide efficient cooling for compatible residential air conditioning systems. It works by circulating refrigerant between the outdoor condenser and indoor evaporator coil, releasing absorbed indoor heat outdoors while supporting a continuous cooling cycle. This condenser is u... https://www.partshnc.com/mrcool-signature-series-air-conditioner-condenser-mcaesas4t1821aa