MRCOOL MCHP51CNPA Signature Series 4 Ton Horizontal Evaporator Coil is an indoor heat-transfer component designed to provide efficient cooling and heating in compatible split-system HVAC applications. It works by circulating refrigerant through the coil while indoor air passes across its surface, allowing heat to be absorbed or released for effective temperature control. Designed for ... https://www.partshnc.com/mrcool-signature-horizontal-coil-mchp51cnpa