A system for use in providing compressed air for snow making equipment used in conjunction with a liquid cooled air compressor, including a plurality of motor driven fans and a heater coil assembly positioned in a portion of the path of the air moved by each of the fans, the heater coil assembly having a liquid coolant flowing therethrough, an air-to-air heat exchanger positioned adjacent the heater coil assembly and in the air flow paths of the fans, the air-to-air heat exchanger being connected in series with the air compressor and the snow making equipment and serving to reduce the temperature of the compressed air flowing from the compressor to the snow making equipment, actuator controlled louvers positioned above the air-to-air heat exchanger, there being one louver for each fan, a liquid cooling coil assembly supported adjacent the air-to-air heat heat exchanger and in a separate air flow path, a liquid transfer pump for moving cooling liquid from the compressor and a control assembly which may be a manually controlled valve for passing coolant liquid from the compressor through both the heater coil assembly and the liquid cooling coil assembly in portions as regulated by the control equipment and controls responsive to the air temperature at the outlet of the air-to-air heat exchanger to control the louvers and the fans to provide the required outlet temperature of the compressed air from the air-to-air heat exchanger for optimum snow making requirements.