The evaporative cooler uses the principle of water evaporation to cool air passing through the cooler. As the fan draws air through the wet pad, evaporation of water absorbs heat from the air. The cooler is portable and easy to use. Set in greenhouse doorway or in front of an open vent. Fill the reservoir with water and plug unit into a grounded 115-120 volt outlet.
Control knob provides choice of low, medium or high speed.
You can also select fan only, without operating the pump. Weight 31 lbs. Washable, replaceable cooler pad. An evaporative cooler can help keep your greenhouse cool and more comfortable throughout the summer. Enjoy fresh, naturally cooled air at a fraction of the cost of refrigerated air-conditioning.