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HomeRepair HelpKenmore Refrigerator RepairKenmore Refrigerator has frost or moisture buildup around the door Repair
Kenmore Refrigerator has frost or moisture buildup around the door
If you have frost or steady moisture collecting on the mullion or around the doors, the most common cause is a failed mullion heater flap that is not heating enough to melt condensation. Start by checking the mullion heater for electrical continuity with a multimeter; no continuity means it needs replacement. If the heater checks out, inspect the door support and door guide for damage or misalignment that can prevent the mullion flap from seating properly. Next check the door gasket for twists, tears, or gaps since a faulty seal will let warm, humid air in and cause frost. Sometimes the simplest cause is that a door was left open for hours, in which case the frost should clear after a defrost cycle once the door is closed. These issues are closely related to refrigerator door not closing properly and a fridge door not sealing, so focus on the mullion and the hardware that aligns it. Enter your model number on RepairClinic.com to see the exact replacement parts that fit your refrigerator and get step by step guidance for the repair.
01 - Kenmore Refrigerator Mullion Heater
A defective mullion heater flap may not be able to heat up periodically to melt any frost or moisture that forms on the flap due to increases in room humidity. You can use a multimeter to test the mullion heater for electrical continuity to determine if the component is working. If the mullion heater has no electrical continuity you should replace it with a new one.
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Common
02 - Kenmore Refrigerator Door Support
If the mullion heater flap has frost or moisture buildup, it's possible the door suport is damaged or misaligned and not allowing the flap to form a tight seal between the refrigerator doors. Inspect the door support for wear or damage and replace if necessary.
Common
03 - Kenmore Refrigerator Door Guide
If the mullion heater flap has frost or moisture buildup, it's possible the door guide is damaged or misaligned and not allowing the flap to form a tight seal between the refrigerator doors. Inspect the door guide for wear or damage and replace if necessary.
Common
04 - Kenmore Refrigerator Door Gasket
A door gasket should form an airtight seal around the appliance's frame to keep the cold air in and the warm air out. If the door gasket is twisted or torn, gaps can form that will allow warm air in, resulting in the freezer not freezing properly. Inspect the door gasket for any damage and replace with a new one if necessary.
Common
05 - Refrigerator or freezer door left open
If the freezer or refrigerator door was left open for an extended period of time (more than 4 hours), frost may have accumulated on the food and around the door opening. The frost should go away after the door is closed and the refrigerator goes through a defrost cycle.
Common
Frequently Asked Questions
Why is there frost or moisture buildup around my refrigerator door?
How do I test the mullion heater to see if it needs replacing?
How can I tell if the refrigerator door is not closing properly because of a bad gasket, door support, or door guide?
My freezer is cold but the fridge is warm; could frost around the door be causing that?
How do I enter my model number or part number on RepairClinic.com to find the correct replacement part?
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