5D51-90-Furnace Fan Control and Limit Switch
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Furnace Fan Control and Limit Switch 5D51-90

Part #5D51-90

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Part Information

This fan control and limit switch (part number 5D51-90) is for furnaces.

Fan control and limit switch 5D51-90 controls the operation of the blower fan in the furnace.

Shut off the house circuit breaker for the furnace before installing this part.


Part Number



Plumbing and Heating


1.3 lbs


4.8" x 3.4" x 13.6"

Technician facts

  • Installations last year: 15
  • Average installation time: 98 minutes
  • Level of repair difficulty: