Why is my fridge frosting up?

Last updated 13/06/2023 11:41


  • 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

Applies to

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


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

If you still experience issues we would recommend a visit from an authorised service technician.

If you found the following information helpful, please give us a thumbs up below. If this information did not resolve your question, all constructive feedback is welcome.

Tips for saving energy at home when using your fridge and freezer

With energy prices soaring, it’s never been a better time to rethink how you use the appliances in your home to save energy and money. Besides helping your household budget, it will also benefit the planet, reducing CO2 emissions. Here are some helpful tips on how to reduce energy when using your fridge and freezer

  • Keep to the recommended temperatures. 4 degrees for the fridge and -18 for the freezer. This secures an ideal balance between keeping food fresh and using the minimum amount of energy
  • Avoid putting warm food in the fridge. This makes the fridge work harder to cool down – using more energy
  • Don’t keep the door open for too long when deciding what to eat. This allows for the temperature to increase

See other helpful tips to save energy and money

Efficient energy-saving tips for your home to lower your energy costs

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