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These indoor coils are designed to be used in conjunction with blower kits and other accessories. The CM5A and CM5B coils are designed for quick and easy installation by a qualified service technician. The CM5A comes with factory-installed mechanical connections. The CM5B comes with factory-installed sweat connections. Both coils utilize a Check-Flo-Rater® piston for refrigerant flow control. Both coils can be used in cooling-only applications or as part of a heat pump system. When heating in co