Refrigerant Pre-Piped Modules (RPM) come with the expansion valve, site glass, access ports and freeze stat factory installed. The Refrigerant Cooling Module (RCM) comes complete with R-22 thermal expansion valve, site glass, two access ports and an external freeze stat, to be installed at the fan coil.

All Energy Saving Products refrigerant modules are heat pump ready, and can be ordered with R410a expansion valves.