Unlock the Right Part
for Your Repair
Find the exact part you need
Enter your model number to see parts that fit your machine.
Price Match Guarantee
In-stock parts ship the same day
365-Day Return Policy
Price Match GuaranteeChoose Product
Identify Problem
03
Find Solutions
HomeRepair HelpAmericana Refrigerator RepairAmericana Refrigerator has frost or moisture buildup around the door Repair
Americana Refrigerator has frost or moisture buildup around the door
If you have frost or moisture building up along the center mullion or around the refrigerator door, the most likely issue is a mullion heater flap that no longer heats periodically; use a multimeter to test the mullion heater for continuity and replace it if it reads open. After that, check the door support and the door guide — a damaged or misaligned support or guide can keep the flap from forming a tight seal. Inspect the door gasket for twists, tears, or gaps that let warm, humid air in, a common reason a fridge door is not sealing or a refrigerator door not closing properly. Also rule out user error, since leaving the freezer or refrigerator door open for hours can cause temporary frost until the next defrost cycle. Enter your model number on RepairClinic.com to find the exact replacement mullion heater, door support, door guide, or gasket for your fridge and get the parts you need to stop the moisture and frost.
01 - Americana 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.
Enter model number to search for the required part specific to your product
Common
02 - Americana 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 - Americana 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 - Americana 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 refrigerator section is warm. Could door frost be the problem?
How do I test the mullion heater to see if it needs replacing?
How can I tell whether the door gasket, door support, or door guide needs replacement?
How do I enter my model number or part number on RepairClinic.com to find the correct replacement part?
Shop by Americana Refrigerator Parts
Our Story
Family-owned and operated since 1912, Burke America Parts Group is the longest-running genuine appliance, HVAC, and outdoor power equipment parts solution in North America. At Repair Clinic, we're proud to be an international brand trusted by the pros as well as the DIY community.
About Repair Clinic
© 2026 RepairClinic.com