The Chill Cube 18K RV roof air conditioner by Furrion has been engineered with variable speed compressors to increase cooling efficiency and lessen operating noise. The cooling unit's robust rating makes it ideal for any hot climate and allows it to cool down quickly, even when ambient temperatures reach 105°F.This RV AC unit has variable speed compressor technology, which means it does not cycle on and off. Instead, it changes speeds based on the amount of cooling needed in your campervan. This eliminates harsh cyclic starts and stops that are typical with a single-speed compressor. It also means that it can slowly change speeds to maintain a temperature setpoint, eliminating the need for aftermarket soft start devices. This RV air conditioner’s continuous compressors allow it to dehumidify effectively at all speeds.