Estimate the cooling/heating BTU capacity needed for a room based on square footage. A quick rule-of-thumb tool for sizing air conditioners and heaters.
BTU stands for British Thermal Unit. It measures the amount of heat energy needed to raise 1 pound of water by 1°F.
No. An oversized AC unit will cool the room too quickly without removing humidity, leading to a clammy feeling and short-cycling.
20-30 BTU/sq ft.