Cooler Package Sets include hermetically sealed condensing unit with receiver tank, evaporator coil, expansion valve, solenoid valve, dehydrator, sight glass, and pressure controls. Include pressure controls for cycling the system; temperature controls can be purchased separately if desired. Installer assembles and adds refrigerant, electrical, and copper lines. R22 gas. BTU capacity based on 90°F ambient temperature and 25°F suction temperature. 208-230V, 1 Phase. UL. Warranty: 90 Days Labor, 1 Year Parts, 5 Year Limited Compressor (Indoor use only unless proper controls are installed).