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 What Size Unit is Right for you?
| Sources vary on how large a unit you should buy for a room of a given size, and experts say that factors such as multiple doors, sunny exposure and high ceilings will increase the Btu you need (air conditioner cooling is measure in British thermal units per hour). Consumer Reports magazine's estimates are on the low side compared to those offered by the United States Department of Energy. We've combined the two to give you a general air conditioner sizing guide. Calculate square footage by multiplying the length times the width of your room. |
| Room
Size |
Btu
needed for a less sunny room |
Btu
needed for a sunnier room |
| 100
to 250 sq. ft. |
5,000
to 6,000 |
5,500
to 6,600 |
| 250
to 350 sq. ft. |
6,600
to 7,000 |
7,000
to 7,700 |
| 350
to 450 sq. ft. |
7,700
to 9,000 |
9,000
to 10,000 |
| 450
to 550 sq. ft. |
10,000
to 11,000 |
11,000
to 13,500 |
| 550
to 700 sq. ft. |
12,000
to 13,500 |
13,500
to 15,000 |
*For more
detailed info go to: www.energystar.gov |
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