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Four tiles are needed.
1.5
0
The room is 144 square feet.
60 feet. Sorry, thought that was obvious.
btus needed to heat & cool 625sf room
144 !
186 square feet, 190 to be safe.
240 square tiles are needed
In order to calculate that, we also need to know the length of the room.
12' x 12' = 144 square feet
64