The MD-18 Series is a DC Electric Air Conditioning Compressor unit Powered by 12 & 24 Volts. With only 18cc to 24cc displacement capacity we can achieve higher rpm to obtain optimal cooling capacity with conservative power consumption. 2000 to 6000 rpm available depending on the application. The Compressor BLDC controller is mounted internally within the main housing and cooled by the suction flood back to the compressor, This also cools the internal brushless motor to operate the internal drive system. The unit is compact in design and suits endless applications including Automotive. Fits Australian standard MIOR fittings to Suction & Discharge ports for Automotive Air Conditioners.