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HomeRepair HelpKitchenAid Refrigerator RepairKitchenAid Refrigerator has frost or moisture buildup around the door Repair
KitchenAid Refrigerator has frost or moisture buildup around the door
If you have frost or moisture building up around your refrigerator doors, start by checking the mullion heater flap — a failed mullion heater is the most common cause and can be tested for electrical continuity with a multimeter; replace it if it shows no continuity. Next look for a damaged or misaligned door support or door guide that prevents the mullion flap from forming a tight seal between the doors. Inspect the door gasket for twists, tears, or gaps, since a bad gasket will let warm air in and can cause the freezer not to freeze properly. Also rule out the simplest cause: a freezer or refrigerator door left open for hours, which will create temporary frost that should clear after a defrost cycle once the door is closed. These problems are often tied to a fridge door not sealing or a refrigerator door not closing properly, and RepairClinic carries the replacement mullion heaters, door supports, guides, and gaskets you’ll need; enter your model number on RepairClinic.com to find the exact part for your unit.
01 - KitchenAid 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 - KitchenAid 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 - KitchenAid 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 - KitchenAid 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 be the cause?
How do I test the mullion heater to see if it needs replacing?
How can I tell if the door support or door guide is causing the seal problem?
How do I find the correct replacement part on RepairClinic.com using my model or part number?
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