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HomeRepair HelpFrigidaire Refrigerator RepairFrigidaire Refrigerator has frost or moisture buildup around the door Repair
Frigidaire Refrigerator has frost or moisture buildup around the door
If you have frost or moisture building up around the refrigerator mullion flap or door seam, the most likely cause is a failed mullion heater that no longer heats periodically to melt condensation. Verify the mullion heater first with a multimeter for continuity; if it shows open, replace it. Next check the door support and door guide for damage or misalignment, since worn components can prevent the mullion flap from forming a tight seal. A twisted, cracked, or torn door gasket is another common cause because gaps let warm, humid air in and can leave the freezer not freezing properly or the fridge door not sealing. Less commonly, the issue is simply a door left open for hours, which will usually clear after a defrost cycle. Inspect the flap, support, guide, and gasket for wear, then replace the faulty part to stop recurring frost and moisture. Enter your model number on RepairClinic.com to find the exact replacement mullion heater, gasket, or support parts that fit your refrigerator.
01 - Frigidaire 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 - Frigidaire 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 - Frigidaire 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 - Frigidaire 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?
My freezer is cold but the fridge is warm. Could frost around the door cause that?
How do I test the mullion heater to see if it needs replacing?
What should I check if my refrigerator door will not close or seal properly?
How do I enter my model number or part number on RepairClinic.com to find the correct replacement part?
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