Perfect Aire 250 sq ft Portable Evaporative Cooler 240 CFMEquipped with a 4. 75 gallon tank, this powerful 240 CFM evaporative cooler from Perfect Aire can effectively cool spaces up to 250 square feet. Best used in dry, arid climates, the PEVP240 is an energy efficient means to bringing cool comfort to areas where relative humidity is low. Featuring a multi function remote control, 3 fan speeds, a 7 hour programmable timer and wide internal oscillation, the PEVP240 is perfect for sun rooms, porches, and