How Can You Convert Between BTUs and CFH?

The British thermal unit, or BTU, is a unit of the energy needed to change the temperature of a pint of water by one degree Fahrenheit. One cubic foot, or CF, of natural gas can change the temperature equivalent to about 1000 BTUs. Therefore, a flow of 1 cubic foot per hour, or CFH, of natural gas is equivalent to providing approximately 1000 BTUs every hour.