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Energy-efficient freezers

By Patrick Gallagher

Save money with a freezer that uses less electricity. We reveal the best energy-efficient models.

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Your freezer is one of the few appliances you have plugged in and switched on all the time, so it’s constantly using electricity.

All freezers sold in Britain are required by law to carry an energy label, which rates a model’s efficiency and gives you an indication about which ones cost less to run, as they will reduce your electricity bills.

In theory, the most energy-efficient models carry the A+++ logo, while the least efficient will be labelled a ‘D’.

When we review freezers, we test the energy use of each model. Our tests have found that even models that carry the same energy label can cost varying amounts to run each year.

Find out which models are rated best for performance and energy use in our Best Buy freezers guide.

Freezer energy-use comparison tool

Use our tool below to compare the annual running costs for all of the freezers we’ve reviewed. Then follow the links to read our full reviews.

Top energy-saving freezers

All of the freezers we review are tested and rated for their true energy use. But the best freezers are also able to freeze quickly, keep your food fresher for longer, are quiet to run and easy to use. Below, we reveal the five freezers we’ve tested that are cheap to run but also came out top in our tough performance tests. 

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Best tall freestanding freezer

Lowest price (in stock) £804.00
Which? score 70%
Reviewed Jun 2017
Freezing power:
2 out of 52 out of 5
Energy use:
5 out of 55 out of 5
Thermostat setting:
5 out of 55 out of 5
Dimensions (cm):
Member exclusive
Storage volume (l):
Member exclusive
Annual running costs (£):
Member exclusive

It goes without saying this tall freezer is exceptionally efficient for its size. But its also easy to live with and does a great job at maintaining a safe and steady temperature - even when the temperature in your kitchen drops on a cold night or rises during a heatwave. The only downsides are the price and the slightly sluggish freezing speed.

Best tall integrated freezer

Lowest price (in stock) £1,454.98
Which? score 81%
Reviewed Jul 2017
Freezing power:
4 out of 54 out of 5
Energy use:
5 out of 55 out of 5
Thermostat setting:
5 out of 55 out of 5
Dimensions (cm):
Member exclusive
Storage volume (l):
Member exclusive
Annual running costs (£):
Member exclusive

It may be among the most expensive freezers we've tested, but it's also one of the most efficient, so you'll be doing your bit for the environment if you invest in it. You'll also be getting an exceptional freezer that didn't do poorly in a single one of our tough tests and will help to preserve your food in great condition.

Best chest freezer

Typical price £199.00
Which? score 73%
Reviewed Jul 2016
Freezing power:
5 out of 55 out of 5
Energy use:
4 out of 54 out of 5
Thermostat setting:
5 out of 55 out of 5
Dimensions (cm):
Member exclusive
Storage volume (l):
Member exclusive
Annual running costs (£):
Member exclusive

This cheap and cheerful chest freezer excels at the basics and should do everything you expect of it. It didn’t do poorly in any of our tests, and it excelled in many of them, including the most important one – freezing power. That means it will freeze rapidly, which is great news if you want to minimise the amount of nutrients that escape from your food during the freezing process. Giving all that freezing power for running costs of around £20 per year is impressive.

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