Whirlpool Refrigerator Evaporator Defrost Heater Assembly WP12729128, Replaces 12729128

Is This the Right Part?

✅ Cross Reference Information

Common Symptoms

• Frost or ice accumulation on the evaporator cover or freezer interior
• Freezer not defrosting normally
• Refrigerator compartment becoming too warm because frost restricts evaporator airflow
• Evaporator fan interference caused by ice buildup

Check Before Replacing

• Unplug the refrigerator before inspection or testing, and protect perishable food while power is off.
• Visually inspect for heavy frost or ice covering the evaporator area; frost buildup can also result from the defrost thermostat, temperature sensor, control, or door seal, so it does not by itself prove heater failure.
• With the refrigerator unplugged and the heater disconnected as required by the model’s service information, check heater resistance with a multimeter; one established reference gives an expected range of approximately 0–50 ohms for this part.
• Use the appliance’s model-specific technical sheet or service mode for any defrost-circuit test; do not apply live voltage unless qualified to perform electrical appliance service.

Pro Tip

Part Details

Installation Notes

• Unplug the refrigerator and safely store food before beginning service.
• Wear protective gloves and remove the freezer components necessary to access the evaporator cover and heater.
• The heater is located beneath or alongside the evaporator assembly; follow the model-specific service instructions for panel removal and electrical connections.
• Disconnect the old heater wiring before removal, install the replacement in the original mounting position, reconnect the wiring, and reinstall all removed panels and components.
• Verify the exact part number and heater shape against the appliance model before installation; similar refrigerator heaters may not interchange.

Verified Compatible Models

596.68259801, 596.69282012, 596.69284000, 596.72382413, 596.75239405, 596.79343510, 596.79423411, ABB2224WEB2, ABL2222FES4, ABL2227VES2, AFB2234WES4, GB2FHDXWB00, GB2FHDXWB02, GB2SHTXTQ03, GX2SHBXVQ04, GX2SHBXVY04, JFX2897DRP02, KBFS22ECBL00, KBLS22EVMS2, KBRS22EVWH2, KRBR102ESS02, KRFF302ESS01, KRFF507HPS02, KRFF707EBS00, MBF2258DEM00, MBF2258FEH00, MBF2258WES0, MBF2258XEW0, MBF2258XEW6, MBL2258XES0, MBR2256KES6, MBR2258XES1, MFF2258VEM7, MFF2258VEM10, MFF2258VEW6, MFF2558VEM10, MFT2673BEM12, MFT2772HEZ00, MFT2976AEB00, WRB322DMBW02, WRF532SMHZ01, WRF532SNHW02, WRF736SDAB13, WRF757SDEM00, WRF767SDEM01, WRF989SDAF03, WRF989SDAM01, WRV996FDEE01, WRV996FDEM01, WRX986SIHV02, WRB322DMBM00, WRF736SDAM11, WRF736SDAM12, WRF736SDAM13, WRF736SDAM14, GB2SHDXTQ03, EB2SHKXVD02, GB2FHDXWQ01, GB2SHDXTB03, GX2FHDXVB03, EB2SHKXVD03, EB2SHKXVQ03, GB2SHDXTS04, GX2FHDXVA02, GX2FHDXVA03, GX2FHDXVQ02, GX2FHDXVT02, GX2FHDXVT03, GX2FHDXVY03, EB2SHKXVQ02, GX2SHBXVB03, GX2SHBXVB04, GX2SHBXVY05

Fitment reminder: Match the complete appliance model number, including suffix or revision where applicable, before ordering.