100503-12 Thermostat Spst Op60 &F Cl35 &F 12J77

Brand: Lennox · Fits: 6 models · Reference price: $47.51

12J77 is a Lennox replacement part (100503-12 thermostat spst op60 &f cl35 &f). Our fitment data lists 6 models that use it.

When to replace this part

Heat control (thermostats, fuses, heating element)

Symptom: The appliance runs but heats or cools inconsistently, or shuts off partway through a cycle.

Check: With the appliance unplugged, check continuity across the part with a multimeter -- no continuity means it has failed.

Models that use this part

All 6 confirmed models for this part.
ModelBrandApplianceParts on file
NP14H60S02GE14
NP16H48V03GE14
NP14H36S02GE12
NP14H48S02GE12
NP14H24S02GE8
NP14H30S02GE8

Other parts for model NP14H60S02

If you are repairing that appliance, these are the most model-specific parts on file for the same model.

Reference price and where to compare

The reference price on file for this part is $47.51. It is informational only, not an offer or an Amazon price — RepairKitHub does not sell parts directly.

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Before you order

Model lookup tool