With reliable air conditioning units, Keystone produces consistent cooling to keep you comfortable, even on the hottest days. Installed easily through-the-wall, this 12,000 BTU air conditioner can effectively cool rooms up to 550 square feet with dehumidification up to 2.5 pints per hour to remove moisture from the air. Perfect for medium sized living spaces like apartments, living rooms, and much more. The unit features a unique remote with a thermostat built in to sense the temperature of where you are in the room and adjusts as needed automatically. Money saving features include energy saver mode, sleep mode, and a programmable 24-hour timer. You'll know when it's time to easily remove and clean the mesh filter with the Check Filter alert. This unit requires a special 230-volt/20-amp electrical outlet and will not operate with a standard 115V household electrical outlet.