text: It depends on the amount of energy in time used.\n\nKilowattsX56.92=BTU/ per minute   This one tells us how many BTU's can be generated per minute per kilowatt\n\nKilowatts-hoursX3415= BTU      This one tells us how many BTU's for each hour a kilowatt is consumed\n\nSo therefore the answer to your question is 56.92 BTU's per minute, or 3415 BTU's per hour. Generally when we talk of BTU's to heat a pool or a hot tub we are referring to the BTU"s per minute. So it is possible to figure the kilowatt usage for each hour of operation of the appliance by dividing the BTU's by 56.92.