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 HelpHotpoint Refrigerator RepairHotpoint Refrigerator has frost or moisture buildup around the door Repair
Hotpoint Refrigerator has frost or moisture buildup around the door
If you have frost or moisture building up around the refrigerator door mullion flap, start with the mullion heater — it’s the most likely cause; use a multimeter to check continuity and replace the heater if it’s open. Next check the door support and door guide for damage or misalignment that keeps the flap from forming a tight seal. Inspect the door gasket for twists, tears, or gaps that let warm, humid air in; a bad gasket often leads to the freezer not freezing properly and can make the fridge not cooling as well as it should. Also rule out the simple stuff: a door left open for hours can frost up until the unit completes a defrost cycle. These steps will narrow the fault and point you to the exact part you need. Enter your model number on RepairClinic.com to find the correct replacement mullion heater, door support, door guide, or gasket for your Hotpoint refrigerator.
01 - Hotpoint 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 - Hotpoint 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 - Hotpoint 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 - Hotpoint 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 freezer works when there is frost or moisture around the door?
What should I check if my refrigerator not defrosting and the mullion flap has frost buildup?
How do I fix a refrigerator door not closing properly that is causing moisture or frost on the mullion?
How can I tell if my refrigerator door is misaligned and causing the mullion flap to collect moisture?
How do I enter my model number or part number on RepairClinic.com to find the correct replacement mullion heater or door gasket?
Shop by Hotpoint Refrigerator Parts
Shop by Popular Hotpoint Refrigerator Models
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