How much energy does it take to boil a gallon of water?



  1. 0 Votes

    At standard atmospheric pressure, boiling point is 212 degrees Fahrenheit. A BTU (British Thermal Unit) is the amount of energy required to raise 1 lb of water 1 degree Fahrenheit. A gallon is the equivalent of approximately 8.3 lbs. So to get water from room temperature (70 degrees F) to boiling, you’ll need 8.3 x 142 BTUS, or 1,178.6 BTUS. One Btu is equal to about 1.06 kilojoules.

  2. 0 Votes

    It would take about 1,178 BTU, assuming your starting with water at 70 degrees Fahrenheit . A BTU is the energy required to raise one pound of water by one degree Fahrenheit. A gallon of water weighs 8.3 pounds and in this example the necessary temperature rise is 142 degrees.

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