Free heating btu calculator printables
Every sheet below is a free PDF you can print at home or at school. Open a sheet to see what is on it, then download it — no sign-up needed.
Printable Room Heat Loss WorkbookRoom-by-room heating load sheet with BTU per sq ft, room fields, and BTU/h plus kW calculations for quick heat loss estimates.1 page · free PDF
Printable Heating Units and Rules of Thumb CardOne-page heating units card with common watt, kW, and ton BTU/h conversions in a simple item-and-value table for quick checks.1 page · free PDF2 files · XLSX, PDF
Get every sheet: Room-by-Room Heating Load Workbook
This sheet plus 1 more in one download, with the editable Excel files. Estimate heat loss room by room with wall, window and air-leakage inputs, total the house load and compare equipment options.
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