Calculators - LOU-TEC

a	Determine the number of cubic feet to heat Width x Length x Height = Number of PI³
b	Determine the difference between outside temperature and the desired inside temperature Outdoor temperature - Desired indoor temperature = Difference of degrees
c	Establish the factor with the list that follows from the determined in b gap Gap of between the outdoor temperature and the desired inside BTU factor
d	Determining the place to heat sealing Waterproof factor 2.0 Space enclosed with doors and window installed. Enough waterproof factor 4.0 Space with complete walls without insulation. Doors and coated windows of plastic or canvas. Little tight factor 7.0 Most of the walls were erected. Not waterproof factor 8.5 Shaped plastic canvas space. Principal not erect walls.
e	calculating the number of BTU required Number of PI³ x BTU factor x Tightness factor = BTU needed

Calculations