Estimate a 1500 sq ft 2 story home as a box which is 16, Ask an Expert

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Estimate a 1500 sq. ft 2 story home as a box which is 16 feet high, 30 feet long and 25 feet long. When the ceiling is R-38 and the walls and basement is R-19. Determine, how many watts of heat input are needed to maintain a constant 70 degree F within if the outside temperature is 0 degree F?

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