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Look on the manufactures label on the fan. Find the amperage and voltage of the device. Multiply these two values together to find the wattage of the device. If the fan operates 24 hours a day, take the wattage and multiply it by the wattage of the fan. This will give you the total wattage that the fan will use in a day. To take it a step further take the total and divide it by 1000 and this will give you the kWh the fan uses. Find out what you are charged by the utility company and multiply the kWh by this number. This will tell you how much it costs to operate the fan for a 24 hour period.

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13y ago

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