Refrigerator Defrost Thermostat

This defrost thermostat (bimetal type) attaches to the evaporator coil in refrigerators. During defrost cycles, it monitors coil temperature and interrupts power to the heater once the ice has melted, preventing overheating.

Key Features

• Senses evaporator coil temperature and opens/closes to control defrost heater current during automatic defrost cycles.

• Uses a bimetallic element enclosed in a housing that clips securely to the evaporator tubing.

• Typically rated for ~45 °F open, ~18 °F close (L45-27F), with ¼″ side push-on terminal and ~8½″ leads.

• Built from durable contact materials and insulating parts designed for long life under repeated thermal cycling.

• Compatible with many Whirlpool, Kenmore (Whirlpool-built), Maytag, and affiliated refrigerator/freezer models—used in place of earlier part numbers such as AP4511066, 2321799, W10260437, etc.

• Always confirm compatibility by matching this thermostat to your refrigerator’s exact model number before ordering.