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Recommended window air conditioner sizing chart
| Area to be cooled (Sq. ft.) | Recommended BTUs |
| 150 sq. ft. | 5,000 BTUs |
| 250 sq. ft. | 6,000 BTUs |
| 350 sq. ft. | 8,000 BTUs |
| 450 sq. ft. | 10,000 BTUs |
| 550 sq. ft. | 12,000 BTUs |
| 700 sq. ft | 15,000 BTUs |
| 1,000 sq. ft. | 18,000 BTUs* |
| 1,300 sq. ft. | 22,000 BTUs* |
| 1,500 sq. ft. | 24,000 BTUs* |
There are also other factors besides the square footage that need to taken into consideration when selecting the correct size air conditioner.
If any of these addition factors apply you may want to consider going up to the next size window air conditioner based on the chart.
* Higher capacity air conditioners require 230 volts and do not use the standard 120 volt plugs found in homes.
