Energy-efficient fridge freezers

Fridge freezers

Energy-efficient fridge freezers

By Ben Slater

Find out which energy-efficient fridge freezers will have the least impact on your electricity bills, saving you money in the long run.

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A fridge freezer is probably one of the few appliances in your home that uses electricity 24 hours a day, so it makes sense to buy one that's as efficient as possible. Use our energy calculator and recommendations below to buy a fridge freezer that won't rack up your energy bills.

Although fridge freezer energy labels give an indication of which ones are the cheapest to run, our in-depth testing has found that even models that have the same energy label can cost different amounts to run each year.

When we test fridge freezers, we work out exactly how much power every model uses, as well as the likely annual cost it will add to your bills.

But cheap chilling and frugal freezing are only worth having if the fridge freezer can cool quickly and maintain a stable temperature. Otherwise, you may find that you're while you're saving money on your energy bills, you're spending more at the supermarket, because a poor fridge freezer could reduce the lifespan of your food.

Check out our Best Buy fridge freezers to help keep your food fresher for longer.

Fridge freezer energy cost calculator

Top energy-saving fridge freezers

We reveal our pick of the best energy-saving fridge freezers we've tested in the table below. Not only are these models very economical, but they were also among the top performers in our tough chilling and freezing tests, so you can be confident that you're getting the best of both price and performance. 

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Best fridge freezer

LG GBF59NSKZB
Today's best price £699.99
Which? score 89%
Tested Oct 2016
Best Buy
Energy saver
Chilling power:
5 out of 5
Freezing power:
5 out of 5
Energy use:
5 out of 5
Fridge storage volume (litres):
Member exclusive
Freezer storage volume (litres):
Member exclusive
Annual energy cost (£):
Member exclusive

Not only is this excellent fridge freezer very efficient, but it’s also the best model we’ve tested that’s currently available. It excelled in all our tough performance tests, so it will chill and freeze quickly and maintain a steady temperature in all conditions – without you having to adjust the thermostat. You can be confident that this Best Buy will maximise the freshness of your food, while consuming as little power as possible.

Best cheap fridge freezer

Samsung RB31FDRNDSA
Today's best price £429.00
Which? score 78%
Tested Aug 2016
Best Buy
Energy saver
Chilling power:
4 out of 5
Freezing power:
5 out of 5
Energy use:
5 out of 5
Fridge storage volume (litres):
Member exclusive
Freezer storage volume (litres):
Member exclusive
Annual energy cost (£):
Member exclusive

The average price of the fridge freezers we’ve reviewed from this brand is around £840, so this Best Buy is a bargain. The fact that it’s also very energy efficient means you’ll save even more over its lifespan.

You get lots for your money, too. In addition to performing well in all our tough performance tests, this fridge freezer has a reasonable amount of storage space and a water dispenser. The freezer is also frost-free, so you’ll never have to go through the arduous task of defrosting it by hand.

Best built-in fridge freezer

Bosch KIN85AF30G
Today's best price £806.50
Which? score 70%
Tested Jul 2015
Chilling power:
5 out of 5
Freezing power:
2 out of 5
Energy use:
5 out of 5
Fridge storage volume (litres):
Member exclusive
Freezer storage volume (litres):
Member exclusive
Annual energy cost (£):
Member exclusive

Integrated fridge freezers tend to cost more than freestanding models, but that doesn’t meant they have to cost more to run. This built-in model is very economical and, while the purchase price might be high, you get a lot for your money when it comes to features.

It’s frost-free, so you won’t ever need to defrost the freezer by hand, there’s a humidity-controllable crisper drawer in the fridge to help keep fruit and vegetables fresh, and there are door alarms to alert you if a door has been left open. Although the temperature can rise a little in certain conditions, this fridge freezer performed well in most of our tough tests, and only narrowly missed out on being a Best Buy.

Best American fridge freezer

Samsung RS7667FHCBC
Today's best price £883.00
Which? score 72%
Tested Jun 2016
Best Buy
Energy saver
Chilling power:
3 out of 5
Freezing power:
3 out of 5
Energy use:
5 out of 5
Fridge storage volume (litres):
Member exclusive
Freezer storage volume (litres):
Member exclusive
Annual energy cost (£):
Member exclusive

American-style fridge freezers can cost much more than £1,000 to buy, and more than £100 a year to run. So, although this one doesn’t look cheap, it’s actually a pretty average price for a model of this size, and it’s a lot more efficient than most.

It will still cost more to run than most conventional fridge freezers, but that’s because you get more than 400 litres of usable space across the fridge and the freezer, which should be enough even for very large households. Despite its cavernous size, it’s still reasonably quick to chill and it is exceptional at maintaining a steady temperature, which should help to maximise the lifespan of your food.

Best retro fridge freezer

Gorenje ONRK193C
Today's best price £978.95
Which? score 81%
Tested Sep 2016
Best Buy
Energy saver
Chilling power:
5 out of 5
Freezing power:
5 out of 5
Energy use:
5 out of 5
Fridge storage volume (litres):
Member exclusive
Freezer storage volume (litres):
Member exclusive
Annual energy cost (£):
Member exclusive

Retro fridge freezers often aren’t cheap, and this stylish model is no exception. It is, however, one of the most economical fridge freezers we’ve ever tested, so the lifetime costs might not be as high as you think.

The freezer is a touch smaller than average, but it’s still remarkable that this model is so efficient, given how powerful it is. Chilling and freezing take next to no time, and, even when the outside temperature rises or falls, the temperature in the fridge and freezer will remain stable.

Fridge freezer efficiency tips

  • Don’t leave the door open for longer than necessary or the fridge freezer will be filled with warm air and have to work to cool down again.
  • Avoid putting warm food in your freezer - let it cool down first.
  • Keep your fridge freezer at least three quarters full - don’t overfill, though, or you’ll stop air from circulating around the compartments, and the appliance will use more energy to keep cold.

Best Buy fridge freezers

When we test fridge freezers, we measure how much energy they use to keep cool, as well as the amount they use up when chilling and freezing fresh items, and we calculate how much they're likely to add to your yearly electricity bills - so you can factor in that cost when you're buying one. 

Of course, a great fridge freezer must be able to chill and freeze fast, and stay evenly cool around the clock, even when the temperature in your kitchen changes. To see which models make the grade as the best - and the worst - on the market, head to our fridge freezer reviews.

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