Before we do anything we must check the size of the door seal is correct.

The sizes are rarely incorrect, but it does save you the trouble of doing the job twice if you are unfortunate enough to recieve the wrong door seal.

Simply hold the new door seal up against the old door seal to compare the size.

Find the screws under the door seals which are holding in the plastic liner and door seal.

You can see from here that the screws hold in the plastic liner which in turn clamps the door seal to the door.

Begin to loosen the screws which hold in the door seal. DO NOT take the screws all of the way out. It is unnecessary and will create more of a job for you.

Continue you way around the entire door loosening each of the screws without missing any.

Once all of the screws are loose, the door seal should easily slide out from behind the plastic liner.

Be careful not to be too forceful when doing this step as some plastic liners can be quite brittle and crumble if you are too rough with it.

Begin slipping the small lip of the new door seal behind the plastic liner of the fridge.

The best method is to start in the top corners and work your way around the fridge.

Once the door seal is in, you can begin tightening the screws. Begin with the 8 corner screws, and then check the alignment of the door while closed. If the door is twisted, you can easily manipulate the door to twist back into shape whilst the screws are loose.

After this tighten the rest of the screws.

Once the door seal is secure, rub some baby powder or talc powder to the hinge side corners of the door seal, and where the seal slides. This will help to prevent twisting of the door seal as it meets the metal of the fridge.

If this still doesn't prevent twisting, then wedge a screwdriver under the seal as you close the door and leave it shut for an hour.

Look for any gaps in the door seal in particular at the top on the opening side.

These can form due to the door dropping or being out of alignment.

Pack out the seal underneath the areas where the door seal has the gaps.

This can be done with a small strip of weather seal, as shown here, or a bit of tightly rolled up paper under the door seal.

Alternatively you can heat the door seal up with a hair dryer to fix any gaps. This softens the door seal and allows you to stretch it.

If the application of powder hasn't prevented the door seal twisting, then wedge a screwdriver under the seal as you close the door and leave it shut for an hour.

The door seal will then have enough time to squash up and mould into the correct shape.

Congratulations, you've just fitted a fridge door seal and will now be benefitting from having a tightly sealing door.

You will now have fresher food, lower electricity bills and your fridge will be under less stress from running longer.