Insulation Calculator

It's sometimes difficult to decide what energy conservation investment will provide the most comfort (and financial return). This spreadsheet should help you see where your heating and air conditioning is going, and will let you compare your upgrade options.

Indoor Temp (F): Outdoor Temp: Attic Temp:
Infiltration: ceiling
air changes/
Latent Heat: Indoor HR Outdoor HR
Diffuse Radiation: BTU / sq ft.
Total Heat:

Although useful for quick calculations, this page is not intended to be a complete modeler of building thermal performance. A number of programs, some free, are available. See this DOE web page.

I have made considerable effort to present correct information.

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