Whirlpool Refrigerator Defrost Heater W11340898 – Superseded by W11562215

Genuine Whirlpool OEM defrost heater assembly used in select Whirlpool-family refrigerators and freezers. The assembly heats the evaporator area during the defrost cycle.

Is This the Right Part?

Common Symptoms

• Heavy frost or ice accumulation on the evaporator
• Reduced airflow caused by evaporator ice buildup
• Refrigerator compartment warming while the freezer remains cold
• Unusually long compressor run times when frost blocks airflow

Check Before Replacing

• With power disconnected, visually inspect for excessive frost covering the evaporator or blocking airflow.
• With the heater electrically isolated according to the appliance service procedure, check the heater for electrical continuity.
• Inspect the heater connector and wiring for loose, damaged, or overheated connections.
• A failed heater is not the only possible cause of a defrost problem; also consider other defrost-system components.

Pro Tip

Part Details

Key Features

• Whirlpool OEM part
• Defrost heater assembly
• Used in select refrigerators and freezers
• Replaces W11340898

Installation Notes

• Disconnect electrical power before accessing the evaporator, heater, or heater wiring.
• Follow the model-specific service procedure when isolating and testing the heater.
• Verify model compatibility before installation.

Verified Compatible Models

ART308FFDB08, ART308FFDB10, ART308FFDM08, ART308FFDM10, ART308FFDW08, ART308FFDW10, ART318FFDB08, ART318FFDB10, ART318FFDS08, ART318FFDS10, ART318FFDW08, ART318FFDW10, AZF33X16DW08, AZF33X16DW09, WRT148FZDM04, WRT148FZDW04, ART308FFDB11, ART308FFDM11, ART308FFDW11, ART318FFDB11, ART318FFDS11, ART318FFDW11, AZF33X16DW10, AZF33X18DW06, AZF33X18DW07, AZF33X18DW08, AZF33X20DW06, AZF33X20DW07, AZF33X20DW08, GAFZ30FDGB04, GAFZ30FDGB05, GAFZ30FDGB06, GARF30FDGB03, GARF30FDGB04, KRFF300EBS01, KRFF300ESS02, KRFF300ESS03, KRFF300ESS04, KRFF300ESS06, KRFF300EWH03, KRFF300EWH04, KRFF300EWH06, MFB2055FRZ02, MFB2055FRZ03, MFF2055FRZ02, MFF2055FRZ03, MFW2055FRZ03, MRT118FFFE06, MRT118FFFE09, MRT118FFFH06, MRT118FFFH08, MRT118FFFM06, MRT118FFFZ07, MRT118FFFZ09, MRT311FFFH01, MRT311FFFZ02, MRT711SMFZ02, MZF34X16DW09, MZF34X18FW08, MZF34X20DW07, WRF560SEHV03, WRF560SEHW02, WRF560SEHZ01, WRF560SFHV03, WRF560SFHW03, WRF560SMHV03, WRF560SMHV05, WRT108FFDB01, WRT541SZHV01, WSZ57L18DM08, WZF34X16DW08, WZF34X16DW10, WZF34X18DW07, WZF34X18DW08, WZF34X20DW04, WZF34X20DW05, WZF34X20DW06, WZF56R16DW10, WZF57R16FW10, WZF79R20DW08

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