You're hot, then you're cold-and this unit gets it, comforting you no matter the weather report. Powerful and efficient, this 12,000 BTU window air conditioner from Perfect Aire? also boasts a built-in electric heater to regulate rooms up to 550 square feet. Find your comfort zone the whole calendar year with adjustable temperature settings, full-range air direction control and three fan speeds, all at the touch of a button. Automated modes keep your ideal temperature in check with utmost efficiency when you're out of the room or sleeping sound.