HP is short for horsepower and BTU/hr denotes British Thermal Units per hour. Both units measure the amount of power that a device, such as a generator or air conditioning unit, is capable of producing. If you were comparing two air conditioning units and one listed the capacity in HP while the other listed its capacity in BTU/hr, you would need to convert the horsepower measurement to BTU/hr to compare the two products.
Determine the number of HP you want to convert to Btu/Hr.
Multiply the number of HP by 2,545 to convert to BTU/hr. For example, if you wanted to convert 2 HP to BTU/hr, you would multiply 2 by 2,545 to obtain an answer of 5,090 BTU/hr.
Divide the number of HP by 0.000392927 as an alternative method to convert to BTU/hr.
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