### How to Calculate Gas Consumption in a Gas Boiler Burner?

Exact Gas Consumption Step 1 Multiply the burner efficiency by the energy content of the gas being used. Natural gas contains 1075 BTUs per cubic foot; propane contains 2570 BTUs per cubic foot. Step 2 Determine the burner output in BTUs per hour from the appliance sticker or user documentation. The output will be in BTU (for example 40000 BTU). Step 3 Divide the BTUs per hour by the fuel energy content. Our burner with the 40000 BTU per hour output divided by 1075 equals 37.21 ...

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