Many factors figure in other than square footage. Such as the height of the ceiling and number of windows. But, for most houses, 20 to 22 btu per square foot will do. 40,000 to 45,000 btu should do.
Divide the heat loss or gain obtained by the load calculation by square footage of the building.
20 btu per square foot
50
usually 20 btu's per square foot so......12000 btu's should do fine
54408
Usually, depending on a few other factors, you need 20 to 22 btu per square foot. Higher ceilings and more windows require more.12000 btu should cover about 550 to 600 square feet of space.
You need 100W per square meter. 100W equals around 341.3BTU. 1 square meter are around 10.7 square feet. You therefore need around 32 BTU per square foot.
The square footage requirement is different per county. You must research per your county for the minimum dwelling square footage requirement.
its usually about 20 btu's per square foot
Between (.07) and (.24) BTU per cubic foot. For Central Air, might be better to use (.07 BTU per Cu.Ft.) For window AC unit cooling 150 square feet, use (.024 BTU per Cu.Ft.) For window AC unit cooling 1600 square feet, use (.07 BTU per Cu.Ft.) [[[ All scenarios assume 8 foot ceilings ]]]
1,055.05 joules per BTU.