Rheostats are a very important aspect of your furnace or stove’s electrical system. It is a specialized type of resistor and can deal with several different types of currents.
Replacement rheostat with nut and knob part number 80090. For units: 24AJ, 24AF, 24A, 4600, 4700, 30A, 24AG, 24AZ, 2020B, and 2000.
Clockwise: Off, high, and low










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