Best energy-efficient fridge freezers 2025: top picks from our expert tests

Use our expert buying advice to buy the best energy-efficient fridge freezer for your budget.

Fridge freezers use electricity 24 hours a day. So, if you need to replace yours, buy one that's as efficient as possible. 

We've tested freestanding, integrated and American-style fridge freezers of all prices - and these are some the most energy efficient. They're economical to run compared with others of a similar type and size, and they're good at chilling and freezing.

Want to know which models aced all our expert tests? See our fridge freezer reviews. 

Best energy-efficient fridge freezers for 2025

See more top-scoring models in our guide to the best fridge freezers.

Energy-efficient fridge freezers by price

Logged-in Which? members can see Eco Buy models in each price bracket. 

• Energy-efficient fridge freezers under £400
• Energy-efficient fridge freezers under £600
• Energy-efficient fridge freezers under £800
• Energy-efficient fridge freezers under £1,000

Which? Eco Buys combine energy efficiency with good all-round performance. They have a lower impact on the environment over their lifetimes than other fridge freezers. 

We calculate this in two ways: how reliable and, therefore, how long-lasting a fridge freezer is likely to be, and how energy efficient it is. 

Only between 5% and 10% of fridge freezers are sustainable enough to be Eco Buys.

Why you can trust our reviews

All our tests are independent and impartial. We're not influenced by marketing claims and we don't take freebies. 

Fridge freezers come with energy labels, but we look beyond these, measuring how much energy these appliances use in real-life conditions. 

Find out more about how we test fridge freezers. 

Where to buy a fridge freezer

• Amazon sells fridge freezers from brands including Beko, Samsung and Russell Hobbs. It also sells plenty of lesser-known brands that we've never tested, so do exercise caution when shopping and always read our reviews. Amazon offers unpacking, installation, assembly and recycling services for large appliances (for additional costs).
• AO.com sells fridge freezers at discounted prices to AO members but non-members still have a wide range of prices to choose from. Monthly instalment plans are available. You can add on unpacking, door reversal, and recycling if you need this. 
• Boots Kitchen Appliances is another good place to look for a fridge freezer, especially if you have a Boots Advantage card. It's basically a white-labelled version of the AO site, but you can earn more than 1,000 Advantage Card points when you buy an appliance. 
• Currys' offering is also pretty broad, and you have the option of paying in instalments should you wish. It also offers installation, door reversal and recycling of your old appliance for an extra fee. 

Looking for a bargain? See our monthly round-up of the best fridge freezer deals.

Can you get an A-rated fridge freezer?

A couple of years ago, it was easy to buy an appliance with an energy rating of A+, A++ and even A+++, but now there are hardly any.

That's because, on 1 March 2021, a new energy label came into force, which replaced the confusing A+, A++ and A+++ ratings and reset the scale back to A to G. The change was intended to reinvigorate the sustainability race for manufacturers by emptying the top A-rating category to leave room for improvement.

On the updated scale, fridges and fridge freezers that previously had the most efficient A+++ rating are now rated D. 

Unless you’re after an integrated fridge freezer or American-style model, we recommend you look for a fridge freezer rated D or above.

Only a handful of fridge freezers have been released with a C or B rating, but some, including Beko, Bosch and Kenwood have brought out models rated A on the new scale. 

A-rated fridge freezers we've tested

Discover the best American fridge freezers and the best integrated fridge freezers.

How much do fridge freezers cost to run?

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 over a year.

When we test fridge freezers, we measure how much energy they use to keep food cool, as well as the amount they use 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. 

We measure the amount of available space in the fridge and freezer and any additional compartments that use extra energy (such as a chiller compartment) and calculate the expected energy use for each appliance.  

The model with the lowest running cost might not be the best choice for you if it's smaller than you need. If you need the space because you have plenty of food to store, go bigger. If not, stick to smaller appliances

Our reviews show the annual running costs of every fridge freezer we've tested, even for non-Which? members. Alternatively, search our running costs tool for your model.

Read our advice on how to dispose of or recycle a fridge freezer responsibly.

Fridge freezer efficiency tips

Whether your fridge is old or new, these quick tips will help to ensure it's running as efficiently as possible.

• 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.
• Don't let ice build up - defrosting your fridge freezer can help to improve its efficiency. Thick blocks of ice can limit your appliance's effectiveness at keeping your food at a specific temperature. 
• Clean the condenser coils - Dust on the coils behind your fridge freezer can prevent it from cooling properly by as much as 25% if it's particularly thick.
• Don't stack things on top of your fridge freezer - this can block heat from escaping, forcing the compressor to work harder than it needs to – and bumping up your energy bills.
• Fridges that are at least three-quarters full run most efficiently - when you open the fridge, the cold from the air is lost more quickly than cold from produce or water. If you can't keep your fridge that full, Beko recommends adding jugs of water. Don’t overfill it, though, or you’ll stop air from circulating around the compartments, and the appliance will use more energy.

See 10 ways to save on your energy bills for advice on reducing your energy use.

How to read a fridge freezer energy label

Every fridge freezer has an energy label that provides information about the appliance you've bought. Here's how to decode yours:

Energy-efficiency rating

Fridge freezers are rated on a scale of A to G, with A being the most efficient and G being the least. This often doesn't correlate to our findings. 

QR code for more product information

Hover your smartphone camera over the QR code on the energy label to access the specific product page on EPREL (the European Product Registry for Energy Labelling) database, where you can access further information about the product.

Energy consumption

The annual energy consumption is now shown in kWh per year for refrigeration appliances. 

Volumes

This is the total volume in litres of all the chilled and frozen compartments in your fridge freezer, based on the total volume as stated by the manufacturer. This may very well differ from our measurements, as we measure with shelves and baskets all in place which reduces the actual space available.

Noise

The noise level of the appliance is shown in decibels, then rated on a scale of A to D, with A being the quietest.

Prefer to buy a standalone fridge and freezer? Discover the best energy-efficient fridges and best energy-efficient freezers.