Airrex spot coolers operate in air temperatures from 68°F to 113°F. These air conditioners utilize eco-friendly 410A refrigerant. Airrex spot cooler air conditioners may require a fresh air supply for proper operation. Includes removable, washable air filters for easy maintenance. Theremostatically protected compressor includes high and low pressure warnings. Moves easily on swivel casters (2 locking). 36,000 BTU Cooling feature 5" diameter front cold air discharge and 8" & 12" diameter top warm air discharge.