Save Money And Stay Cool With The Impecca Through The Wall Room Air Conditioning Unit. Its 12K 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. Choose The Air Conditioner That'S Right For You Room Conditions. To Maximize Your Unit'S Cooling Efficiency, Calculate The Required Btu According To The Conditions Of The Room In Which It Will Be Placed. For Rooms With A Lot Of Sunlight, Choose A Unit With At Least 10% More Btus Than What Is Required By The Size Of The Room. For Kitchens, Select A Unit With 4,000 More Btus Than What Is Required By The Size Of The Room. If The Room Will Contain More Than 2 People On A Regular Basis, Add An Additional 600 Btus Per Person.