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Which? Best Buy freezers

by Ben Slater

The best freezers freeze fast to keep your food as fresh as possible. They're also cheap to run. We reveal our Best Buy freezers, below.   

Put us to the test

Our Test Labs compare features and prices on a range of products. Try Which? to unlock our reviews. You'll instantly be able to compare our test scores, so you can make sure you don't get stuck with a Don't Buy.

Want the best freezer for your food? We've tested hundreds of freezers to find the ones that freeze fast, helping lock nutrients in food and ensure your food is at its freshest when you come to eat it. 

  • We run dozens of tests, so you can be sure your Best Buy freezer cools quickly and keeps your food safely frozen, whatever the temperature in your kitchen.
  • We reveal true energy costs - your freezer is running 24/7, so we'll tell you how much each freezer will add to your energy bill.
  • We root out the slow coolers, to help you avoid freezers that will cause your food to spoil more quickly than it should when you defrost it.

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How we unearth the best freezers

We've tested tall, under-counter and chest freezers to find the fast coolers and cheap-to-run models. We've covered all the big brands - including Beko, Bosch, Miele, Samsung and Zanussi - to hone in on the Best Buys that outstrip the competition and provide the best safehouse for your food.

  • Freezing power We challenge a freezer's cooling power, seeing how quickly it can freeze food-equivalent gel packs. The best freeze fast, meaning your food will last longer when it's defrosted. But the worst struggle to freeze in two whole days of testing.
  • Temperature stability We turn the temperature in our test lab up to see whether each freezer can hold its temperature during a heat wave. We then turn the temperature down to see whether it will keep your food safely frozen during chilly winter nights.
  • Reliable thermostat setting A great freezer will adjust to the right temperature when you set it up in your kitchen. So we test whether the manufacturer's thermostat setting is spot on or out by a mile - meaning you'd have to use a fridge/freezer thermometer to set the temperature.
  • Energy use Your freezer has to be switched on 24/7 so it makes sense to choose one that uses energy sparingly. We work out how much energy a freezer uses to maintain its temperature and freeze food and reveal whether it's cheap to run for its size. We also calculate how much it will add to your yearly energy bills.
  • Ease of use and cleaning A freezer that's hard to use will quickly become annoying - so we test aspects such as whether the drawers slide smoothly, whether you can easily fit items inside without pulling the drawers all the way out and whether the freezer is easy to programme and clean.  

The best freezers cool quickly and keep food safely frozen in changing room temperatures, so food is as fresh as possible when you defrost it.

Freezer backings and fire risk

All freezers currently have a backing made from plastic, metal or aluminium laminate, depending on the make and model you buy.

We continually monitor and vary the assessments that underpin our reviews to take account of changing standards and areas of concern.

Our tests have revealed that plastic backing can be highly flammable.

We have made all flammable plastic-backed freezers Don't Buys, regardless of how else they performed in our freezing tests.

Our Best Buys only contain freezers we know to have flame-retardant backing and that have also aced in our chilling, freezing and other tests.

You can check whether a freezer is metal or plastic-backed in our freezer safety guide.

Freezer reviews you can trust

Which? tests the latest tall, chest and under counter, freestanding and built-in freezers from all of the big appliance names, including AEG, Beko, Bosch, Hotpoint, Indesit, John Lewis, Lec, Miele, Neff, Samsung, Smeg, Whirlpool and Zanussi. We’ve come across good and bad freezers from the same make, and found you can’t always rely on the brand to guarantee getting a top-notch model.

Which? is independent – we work for you, the consumer, so you can be sure that our product recommendations are influenced only by our test results. We're not influenced by third parties and we don't accept freebies from product manufacturers or retailers. We buy all the products that we test ourselves, so our advice helps you to make the right choice first time and avoid costly mistakes.

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