Zip-Code Insulation Program from the U.S. Department of Energy. Use this program to determine where you need to insulate and the recommended R-values based on your climate and type of heating and cooling system, etc. The program also will provide cost estimates and a rate of return.
Zip-Code Insulation Program from the U.S. Department of Energy. Use this program to determine where you need to insulate and the recommended R-values based on your climate and type of heating and cooling system, etc. The program also will provide cost estimates and a rate of return.