AC Vs. DC Furnace Motors


Furnaces need a strong motor to function efficiently and consistently over time. Both alternating current (AC) and direct current (DC) motors are available for furnace motor use, but one is more cost-effective and functional than the other


  • Furnace motors generate the electricity, either through AC or by DC to move cool air through the furnace to produce warm air. The motor needs to have an adjusting variable to start and stop with the thermostat reading.


  • DC furnace motors, being variable-controlled, are preferable for furnace temperature maintenance because of their quiet operation, compared to the noisier AC motor. Also, DC motors cost less to operate.


  • By running a DC furnace motor constantly, its fluctuating speed for temperature varying allows a room, or set of rooms, to keep an even temperature for peak comfort. Homes and businesses can take advantage of this constant temperature and save money at the same time, spending less than $10.00 a month with the motor running every day.

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