![]() Window air conditioning units can be difficult to size accurately because of the assorted factors involved. To get the best cooling for a given space, you should first determine what size (amount of BTUs) type of air conditioner to purchase. If the room is not insulated well, large windows with sun coming in, or doors are left open, you may need to go for a larger BTU AC unit.įind window AC size needed in BTUs Window AC Sizing Chart In this example, you would want to find a window AC unit that is 7200 BTUs or larger. The number 7200 is the amount of BTUs the room needs to properly cool it. Take the square footage of your room, in this example 360, and divide by. Use a calculator to find out your square footage. 05 and this will give you the BTU size you need for the room. To find out the BTUs you need for proper sized cooling divide the number by. To find the square footage of the room the AC will be in, multiply the width by the length of the room.Įxample: A room 20 feet wide by 18 feet long would be 360 square feet. The square footage or size of a room is the most important factor in choosing an air conditioning unit. What Size Window Air Conditioner Do I Need?Īir conditioning units use BTUs to measure the cooling capability they have. A correctly sized window Aircon or AC unit for a room will enable it to start and run as needed, cooling the space to the set temperature and without constant starting and stopping.Air conditioners use the most energy when they initially start up, which makes oversized units a bad idea as they will start and stop excessively in a smaller room.The window AC unit that’s too small for a room will not cool the room and will never reach the proper temperature causing the AC unit to constantly run and cause higher electric bills. ![]() A window AC unit that’s too large for a room will cool the room very quickly and shut off often therefore making your electricity bill excessively higher.Window AC units are most effective when the window unit is large enough to cool the room it’s placed in.Window AC sizing is done by looking at how many BTUs the AC unit can produce vs the square footage of your room. Find the window air conditioner size chart below to help you find the exact BTU sized AC unit needed to cool your room.īuying a suitable sized window air conditioner is key to cooling your room. If the AC unit is too small it will never adequately cool that space. AC units need to be sized correctly in BTUs to cool a room. Do you know the correct size window air conditioning unit to buy for your room or home? If a window air conditioning unit is not the right size for the space it is in, it won’t work efficiently. ![]()
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