Cool Solutions by External Approved technology with 30 bears experience in the Market! Already Spot Cooler 5-Ton Airfare spot coolers operate in air temperatures from 68% 13°F These air conditioners utilize Eco-friendly 4104 refrigerant. Ares spot cooler air conditioners may require a fresh alr supply for proper operation. Includes removable, washable air filters for easy maintenance. Thermostatically protected compressor includes high and low pressure warnings.