how many btu required for floor heat?
<answer> A radiant floor at 25 BTU’s per square foot but windows, doors, insulation, and degree days all make a major impact on getting you just what you need. <context> Heat loss is a critical step, as we can estimate the average output of a radiant floor at 25 BTU’s per square foot but windows, doors, insulation, and degree days all make a major impact on getting you just what you need. The most common sizing mistake with in floor heat is in oversizing.