Why is my fridge frosting up?

Issue

• Why is my fridge frosting up?
• The fridge's back wall is wet
• The fridge's rear wall is frosty
• Frost forms in the fridge
• Excess condensation inside the fridge

Applies to

• Freestanding Fridge / Fridge Freezer
• Built-in Fridge  / Fridge Freezer

Resolution

The wet wall is part of normal functioning. The degree of air humidity and the amount and temperature of fresh food can influence the degree of condensation inside the fridge. During the cooling process, the humidity/moisture starts to condense on the back wall as this is one of the coldest places in the fridge. These droplets can be frozen, and ice can build up on the back wall.

If you are still experiencing an issue:

• Check your thermostat has not been set too high, reduce the temperature within the fridge it may have been set too high by accident which can lead to frost build-up.
• Is the door being open for too long or opened too often? Ice can be formed because moist air is drawn into the appliance.
• Is the door closed properly after use? Check the condition of the gasket on the door. If you find it is damaged, deformed or broken, call for a service visit.
• Is anything stuck in the door or prevent it from closing properly?
• Hot food or too much fresh food is placed in the fridge before cooling. Try to avoid placing warm or hot food straight into the fridge as this can change the inside temperature and lead to ice within the fridge. Alternatively, if you have recently done a large shop we would recommend using a Coolmatic or similar function to cool the food quicker.
• Is the seal on the door of the appliance clean? Make sure the seal is clean and free of dirt.

See our helpful videos

How To Set and Adjust Your Fridge's Temperature

Why Is My Fridge Door Difficult To Open?

Why is There Water in My Fridge? How to Unblock a Fridge Drain Hole

Easy tips & tricks on how to clean a fridge

Book a Service Visit

If none of the above steps resolve the issue, we recommend booking a service visit with an authorised technician. A professional inspection will help identify and fix any internal faults safely and efficiently.

Book a repair online

Cause

FAQ – Frost Build-Up in a Fridge

Why is frost forming inside my refrigerator?
Frost usually forms when warm, humid air enters the refrigerator and freezes on cold internal surfaces.

Is it normal to have some frost in a refrigerator?
A small amount of moisture or light frost can occur occasionally, especially after the door has been opened frequently. Heavy or recurring frost is not normal.

Can a damaged door seal cause frost build-up?
Yes. A worn, damaged, or dirty door seal can allow warm air to enter the refrigerator, leading to frost formation.

Does putting warm food in the refrigerator cause frost?
Yes. Warm food releases moisture as it cools, increasing humidity inside the refrigerator and contributing to frost build-up.

Can blocked air vents cause frost inside the refrigerator?
Yes. Restricted airflow can create cold spots where moisture freezes more easily, resulting in frost accumulation.

When should I arrange a repair for my fridge?
If frost returns quickly after defrosting, if the door closes correctly and the seal is in good condition, or if cooling performance is affected, the refrigerator may require professional inspection.