With the air this cool and comfortable, you just might want to picnic inside instead. This 12,000 BTU through-the-wall air conditioner from Perfect Aire effortlessly cools spaces up to 550 square feet—your 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 Energy Star 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.