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Refrigerator Repair · Troubleshooting

How To Fix Ice Buildup In Your Refrigerator/Freezer

If your refrigerator has ice build up on the inside, here are a few things you can check yourself to fix the issue. A common cause for ice buildup is a faulty door seal. If a refrigerator has a bad door seal, the outside air will pass into the fridge and cause the ice build up problem you are experiencing.

Another cause for this could be that the door hinges are loose or not attached properly leading to outside air entering your fridge/freezer. Check to be sure the door hinges are tight and are attached and aligned properly.

refrigerator freezer ice buildup

Some other simple things you can do to try and remedy this issue are easy to try yourself. You can try moving the refrigerator away from the wall a little bit more to give it extra room for the air to circulate. The heat from the compressor should have sufficient room to dissipate. If the refrigerator is too close to the wall problems will occur.

Another solution may be to clean the vents on the back or below the fridge as they can be clogged with dust and debris. Clogged vents cause air circulation problems that lead to many common refrigerator problems.

If the ice build up is only happening in the freezer, the freezer drain is probably clogged. To unclog the drain you should first unplug the unit from the wall. Remove the freezer covers to expose the frozen drain. Pour hot water down into the drain hole until you see the water dripping into the drain pan under the refrigerator.


How to remove and replace the door gasket on a refrigerator


How to unclog a refrigerator defrost line

Modern day refrigerators are frost free. They should not have to be defrosted manually. If however you have an older refrigerator or you want to manually defrost your newer fridge, here is how:

  1. First remove food and store it in another fridge or cooler.
  2. Unplug the refrigerator from power and remove any drawers or shelves.
  3. Wedge the door to keep it open for the defrost procedure.
  4. Lay a deep pan or similar at the bottom of the refrigerator to catch the water when the ice melts.
  5. Leave everything sit until all the ice has melted (this is a good time to wipe down the inside of fridge).
  6. After the refrigerator is defrosted and the ice is gone, clean and replace the drawers and shelves.
  7. Plug in the refrigerator back into power.
  8. Set the thermostat dial to be sure the temperature is set correctly.
  9. Shut the refrigerator door.
  10. Once the fridge is cold you should watch for any ice buildup.
  11. Check to be sure the fridge is at the proper temperature and no ice has formed.
  12. Put the food back in the refrigerator.
  13. Periodically check fridge to be sure no more ice has formed.

defrost a refrigerator

If your refrigerator is still under warranty, make sure to call the company you purchased it from or call the 800 number of the company who manufactured it and schedule service. Find out if it is under warranty before doing repairs as doing repairs yourself could void the warranty on the unit.

NOTE: At times a powdery type of ice will form in your refrigerator if it is being repeatedly opened and closed. Keep this in mind as your only issue may be this and no repairs are necessary.

Other things causing this issue could be a defrost timer,  bad temperature sensor or bimetal defrost thermostat. In this case you will most likely need to call a repair person or find someone who is experienced with diagnosing appliance faults and removing and replacing components.

Have experience with ice buildup in your freezer refrigerator? Please help out everyone who seeks information on this page by leaving a comment below.

Keith Schneerer

Written by Keith Schneerer

Certified Appliance Tech · Founder, RemoveAndReplace.com

Keith has spent 30+ years repairing machines, starting as a military mechanic and later maintaining food processing equipment before moving into appliance repair. He founded RemoveAndReplace.com to share field-tested repair advice.

More about Keith →

55 thoughts on “How To Fix Ice Buildup In Your Refrigerator/Freezer”

  1. DIY Project Help Tips

    Johan Groenenberg,
    Have you tried the steps above on this page? Ventilation may be a problem. Have you made sure both fans in the fridge run?
    -RR

  2. Johan Groenenberg

    Have the same problem with a Defy DFC406. Ice buildup on the fridge part in a square pattern at the back. Drainage hole is open. It don’t reach lower than 10deg Celsius, especially in summer, even on top setting. Battling to get our house temperature lower than 28deg C. In winter, not really a problem. Already de-freezed it few times. Could heat or ventilation be the problem? We live in the southern part of South Africa. In Des and Jan our outside temperatures stay mostly above 40deg C.

  3. DIY Project Help Tips

    Tim Fargo,
    Are you saying the interior rear of the fridge is getting ice buildup or in the freezer? Which portion? How thick is the ice buildup and does it form in a certain pattern? Is the fridge and freezer working properly despite this? Can we have the model number of your Defy refrigerator?
    -RR

  4. Hi there. I have a Defy fridge/freezer (freezer below) which is building on the back wall of the fridge. It doesn’t appear to be the seal or the vent system. Any thoughts?

  5. DIY Project Help Tips

    Jeff Hawley,
    Is the refrigerator still working properly besides the ice buildup? There may be a defrost issue with the fridge. Have you tried manually defrosting the refrigerator for 24 to 48 hours, and then restarting the fridge to see if that may reset the fridge? If not you may have a board or defrost timer that is malfunctioning.
    -RR

  6. I have a GE Refrigerator and the back of the freezer wall keeps getting ice build up. The model number is 197d6467poo1.

  7. I live in a rented flat and I experience ice buildup in huge quantities (more than 5 cm over 4 months) during the summer period in my fridge, which is installed directly on the wall facing directly the sun.
    Just opening the door wouldn’t thaw it in a reasonable time, so I filled some bowls with hot water, put them inside and closed the fridge. Repeated that after 20 minutes and the blocks of ice came lose pretty quickly.

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