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WarmmFloors Hydronic Radiant Floor Heating Heat Loss Calculation

Calculating the heat loss for a building will determine the design for the heat system. Heat loss is measured in BTU's per hour and the heat system needs to generate and distribute the same amount to maintain the desired temperature.


Heat Loss Calculation Form

Click to download Excel Sheet

Heat Loss

Calculation Form

This heat loss calculation form (Excel) is an open architecture. You may enter your values of your location and determine the heat loss for the project. The first page consists of a short form with 15% of efficiency loss added. Page 2 is more specific and will calculate the heater requirement.



Temperature Gradients in the USA

Degree Day Chart


For more degree day information and lowest and highest temperatures, contact your local gas company, electric company or weather station.



Last modified: 10/22/2008


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