Don't let the summer heat break your will or the bank: the Keystone KSTAT10-2HC 10000 BTU 230V Through-the-Wall Air Conditioner is a sensational single-room unit that keeps your bedroom or living room at a comfortable temperature without wasting energy on unused rooms (unit can cool up to 450 square feet). The unit is packed with features, including an LED control panel (with remote control) that allows you to adjust the three-speed fan and temperature to your liking. You can even use the unit as a heater when the nights get cooler. A 24-hour timer and Sleep Mode help you conserve energy. The unit features a whisper-quiet operation, letting you rest easy while it works.