Best energy-saving kettles for 2024

Kettles all use a similar amount of energy to boil a litre of water, but that doesn’t mean they’re all equally efficient.  

If a kettle switches off immediately after boiling and has a low minimum fill level, it can help you save energy and money, as this means you don’t have to boil more water than you need.

To be eco-friendly, a kettle must have a brief overboil time and low minimum fill level. That way, we know that they do more to keep electricity use down. 

To see all the kettles we recommend, see our pick of the Best kettles for 2024

Best Buy energy-saving kettles

Which? members can log in to see our pick of the best energy-saving kettles in the table below. If you're not a member, join Which? to unlock the table below.

Do fast kettles use more energy?

It's a common misconception that if a kettle boils faster, it must use more energy. However, we've found that isn't the case. 

In fact, most of our Eco Buys have been awarded that title because of their speedy boiling. If a kettle is able to reach a boil in around three minutes, it will use far less energy than one that takes four or five minutes.

Therefore, if you're looking to cut down your energy bills you're better off choosing a fast kettle as it'll likely save you money in the long run. 

Read Do fast boil kettles use more energy? for more information.

How to save money when using your kettle

• Boil only the amount of water you need - boiling a litre of water often uses more than twice the energy it takes to boil the minimum amount.
• Descale your kettle regularly - if it’s full of limescale, it uses more energy to boil the same amount of water.
• Choose a kettle with a low minimum fill - this means you won’t waste energy by boiling more water than you need.

If you just want the best cheap kettle, or are looking for a kettle with special features such as a filter or multiple temperature options, head to our kettle reviews to see all the kettles we've tested.