The purpose of this project is to compare the fuel
savings
per linear wall foot and materials cost per linear wall foot of several
wall
systems with the goal being to estimate how much money each
system will save per linear wall foot over time in years. If you
want to know the total heating bill savings for your house then use the
equation below:

total wall
savings = (house perimeter)(#stories)(5,10,20,30, or 40 year savings)

Example: What is the 10 year heating cost savings
for a 32'x32' 2 story house in fairbanks with a double 2x4 wall.

total wall
savings = (4*32')(2)($13) = $3,328

Note this number only accounts for conduction
through the vertical walls without windows because this site is simply
meant to compare the cost effectiveness of
different
wall
systems.