To determine the BTU needed for a room, a common rule of thumb is to allocate about 20 BTU per square foot. For a 108-square-foot room, this would be approximately 2,160 BTU (108 sq ft x 20 BTU/sq ft). However, factors such as ceiling height, room insulation, number of windows, and occupancy can affect this calculation, so adjustments may be necessary for optimal comfort.
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The room is 144 square feet.
A 19' x 15' room is 285 square feet or 26.477 square meters.
144 ft2
144 !
About five (4.975) such boxes.
640
6
Each tile is 1 square foot.
usually 20 btu's per square foot so......12000 btu's should do fine
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