With the air this cool and comfortable, you just might want to picnic inside instead. This 12,000 BTU thru-the-wall air conditioner from Perfect Aire effortlessly cools spaces up to 550 square feetyour guests will thank you. How cool is cool That's your call. Comfort is in your control with adjustable temperature settings, full-range air control and three fan speeds. And it's just as efficient as it is mighty, boasting an rating. Even more good news for your energy bills, several automated modes keep the temperature right in your comfort zone whether you're home or away. cools areas between 450-550 sq. ft. 3-speeds in both cool and fan mode. Full-range air direction control. 208/230 Voltage.