The app calculates fabric and ventilation heat loss for rooms using dimensions and temperature data. It displays results in Watts and BTU, and provides a total for the building to estimate heating system output.
by Colin Porteous★ 1.01 ratingsUtilities$5.99Data updated 2026-10-17
The app calculates room heatloss in Watts and BTUs per hour based on dimensions and temperatures. It also estimates radiator length or power output and converts between Watts and BTU/h.
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