Cooline Window Air Conditioner Specifications 18 Cool Home (18000 BTU Model) Actual Cooling Capacity: Ranges between 17,900 to 18,500 BTU depending on the exact version. Compressor Type: Rotary, designed to withstand hot climates. Refrigerant Type: Often uses environmentally friendly R410A gas, and in some modern (inverter) models, R32 is used. Voltage and Frequency: Operates on 230 volts and 60 Hz frequency. Temperature Range: Can be set between 16 to 30 degrees Celsius.