How Many BTUs Do You Need to Cool a Room?


Quick Answer

To cool a room with an area of 700 to 1,000 square feet, one needs 18,000 BTUs per hour. The number of BTUs needed to cool a room depends upon several factors, the most important being the area. The larger the area, the more BTUs are required.

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Full Answer

Area is not the only factor determining the number of BTUs for cooling a room, according to Energy Star. A heavily shaded room requires 10 percent fewer BTUs, or British Thermal Units, and a sunny room needs 10 percent more BTUs than a normally shaded room. Kitchens also need a higher number of BTUs to cool. If it is a room that regularly contains more than one person, add another 600 BTUs per person.

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