... Unit utilize a rotary compressor, which offers quiet operation ,light weight, and low starting and running power requirements. ... and a gas-liquid separator, return air filter, cables etc. Characteristic:3,500-36,000BTU/H220V/50HZ,380V/50HZ optionalUsing scroll compressor ... locationsHigh efficiency, low-noise blower, and scroll compressor, greatly reduce the noise and improve the comfort of the cabinWe ...