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HomeRepair HelpWhirlpool Refrigerator RepairWhirlpool Refrigerator has frost or moisture buildup around the door Repair
Whirlpool Refrigerator has frost or moisture buildup around the door
Frost or moisture collecting around the refrigerator doors is a sign warm, humid air is leaking into the cabinet. The most likely cause is a faulty mullion heater or heater flap that no longer heats to melt condensation; a quick continuity check with a multimeter will confirm it. If the mullion checks out, inspect the door support and door guide next—wear or misalignment can prevent the mullion flap from making a tight seal. Worn, twisted, or torn door gaskets are another common culprit and will let air in, so check the gasket for gaps or damage. Finally, don’t overlook the simple stuff: a freezer or refrigerator door left open for several hours can leave frost that usually clears after a defrost cycle. If your fridge door not sealing or refrigerator door not closing properly is the issue, you can find the correct replacement mullion heater, door support, door guide, or gasket for your model at RepairClinic.com by entering your model number.
01 - Whirlpool 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 - Whirlpool 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 - Whirlpool 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 - Whirlpool 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 my fridge not cooling but the freezer works?
My refrigerator door not closing properly. Could that cause frost or moisture buildup?
Refrigerator not defrosting and there is frost around the door. What should I check?
How do I find the right replacement part on RepairClinic.com using my model number or part number?
Could a misaligned door cause constant frost at the center seam or on the mullion?
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