To make your freezer more efficient you must keep it full, otherwise the freezer motor has to work harder costing more energy. The less air inside, the less energy used. You must fill in all the gaps but at the same time leave room for ventilation.

In the UK £1.2 billion is the electric cost of domestic and freezers per yearThe solution is to use freezer space invaders.
They will save an estimated 15% energy, you can help the environment and reduce your own carbon footprint.

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