Printable Heat Loss Workbook
This workbook is for anyone tracking heat loss through building surfaces during insulation planning, energy checks, or rough load estimates. It includes a simple table for conduction heat loss by surface, with columns for Surface, Area in square feet, U-factor, temperature difference in degrees Fahrenheit, and BTU per hour. Example rows are filled in for Walls, Attic, and Windows so the layout is easy to follow.
Free printable · PDF
- 2 pages
- US Letter — choose “Fit to page” for A4
- PDF, 104 KB
Free for personal, family and classroom use.
Use it by entering each surface, its area, the U-factor, and the temperature difference. The sheet calculates BTU/h for each line so you can compare where heat loss is highest and see which parts of the building matter most.
Good for
- Estimate heat loss by building surface
- Compare walls, attic, and window losses
- Support insulation planning and load checks
Tip: Print one copy per building zone so you can compare surfaces room by room.
4 files · XLSX, PDF, DOCX
Get every sheet: Insulation Planning Workbook
This sheet plus 3 more in one download, with the editable Excel and Word files. Excel assembly R-value and U-factor calculator with framing factor, a room heat loss workbook, a material R-value reference and an insulation upgrade planner.
$5.00 USD, one-time 4 files · about $1.25 each
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