Airrex spot coolers operate in air temperatures from 68° 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. Thermostatically protected compressor includes high and low pressure warnings. Moves easily on swivel casters (2 locking). Air Conditioners from 10,000 BTU up to 84,000 BTU Cooling feature 5″ diameter front cold air discharge and 8 & 12″ diameter top warm air discharge. Air Conditioners with 36,900 BTU Cooling Or More feature 8″ diameter front cold air discharge and 16″ diameter top warm air discharge. Optional Warm Air Duct includes 8’L ducting and a 2’ x 2’ ceiling flange for warm air exhausting. ETL listed. Optional Condensate Pump that plugs directly into the portable air conditioner. 1 Year Warranty. 3 Year LG compressor warranty.