Btu (I.T., pre-1956) to Therm conversion

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Btu (I.T., pre-1956)

The Btu (I.T., pre-1956) refers to the International Table Btu, a specific definition used before 1956. It represents the amount of heat required to raise the temperature of one pound of water by one degree Fahrenheit at a constant pressure of one atmosphere.

Therm

The therm is a unit of heat energy used in the United States and the United Kingdom for measuring natural gas consumption.