A: A gas fired, forced air home furnace typically requires a small amount of electricity to ignite and operate in your home. Most gas heat furnaces use less than 600 watts of electricity, or less than half of a typical 15 amp electric circuit.Click to see full answer. Herein, how many amps does a furnace draw?The exact amps an electric furnace requires is solely based on the size of the furnace and its performance capabilities; however, typically electric furnaces require a draw between 60 and 80 amps. By multiplying the volts by amps you will receive total wattage.Similarly, how many kwh does a furnace use? Electric furnaces range from 10 kilowatts to 50 kilowatts, we estimate that a 2,400 square foot home using a modern high efficiency electric furnace uses 18,000 watts for heating when the furnace is being used. One may also ask, how many amps should a furnace blower motor draw? First, at the highest fan speed setting the motor is drawing under 20 amps, which is much less than the 25 amp rating of the fuse. But this chart also tells us a few things about the relationship between blower motor speed, motor current draw and the position of the re-circulation door.What size breaker do I need for a gas furnace?1] Gas furnaces should have a single circuit to it for amp ability to the furnace. i like to have a #12 -2 with groud and a 20 amp breaker for the larger units and the 12-2 with ground with a 15 amp breaker for the small units. 2] All gas furnaces should have it’s own circuit !
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