Save money and stay cool with the Impecca Heat & Cool Through The Wall Room Air Conditioning Unit. Its 12,000 Cooling BTU/h, operating using energy-efficient technology, will easily cool a room with up to 450-550 square feet. Guide the air flow as you like with four-way air direction. In the case of a power outage, the Impecca Preferred air conditioner will memorize and resume at your temperature settings when power is restored..