The main reason it made the list of all the kettles we reviewed, is that it’s fantastically eco-friendly. It saves energy using the rapid boil function, keep-warm mode, temperature control panels, and 1 cup boiling option. It also gives you 3 pre-set tea settings. Some of the safety functions to look for in an eco kettle include an auto shut-off feature and a slow-release lid.

There is a quite boil function that is 75% quieter compared to other Russel Hoobs kettles. The illuminating feature turns blue when the water comes to a boil. The colourful and yet subtle copper ombre will bring a touch of elegance to your eco kitchen. A keep-warm function ensures the water retains its temperature long after it has boiled. Depending on the kettle, the water can be warm for 20 minutes to 2 hours. Hidden ElementDuronic’s EK42 is one of the best eco-friendly technology kettles in the market. Why? For starters, it has an eco rapid boil feature with 2.5 – 3 KW that saves energy. The temperature control feature makes it possible to choose different boiling temperatures. And, its keep warm feature retains the water temperature up to 30-minutes – we tested this to confirm it. You can also boil your preferred amount of water, plus the transparent window makes it easy to see the water level gauge.

Overall, we recommend this product thanks to its keep-warm mode keeps the water’s temperature for 4 hours, longer than most of the eco choices available.This means you can heat your water in the morning and still enjoy a hot tea at 11:00, without having to reheat that last cup of water in the microwave. Its large capacity of 1.7 litres ensures you save energy. And, for safety purposes, this kettle has boil-dry protection and auto shut-off features. It is also cordless with a 360° base that we found easy to use with both our left hands and right hands. The heating element is hidden, which makes it easy to clean.All in all, it is a large capacity kettle with high efficiency of 3000W, a rapid boil function, and a water level gauge that lets you measure your desired water level. What more could you need? There is so much love about this kettle, all of which make it one of the best energy-saving kettles to buy. We’ve kept the one we tested for ourselves! It has a rapid boiling function with a 3KW hidden element that also makes it easy to clean. Its large capacity makes it possible to boil up to 1.7 litres of water, enough for 6 – 8 cups. There is a water level gauge so you can only boil what you need and a removable limescale filter for efficiency. Or even What are the Top 10 affordable (best budget, best cheap, or even best expensive!!!) Vacuum Insulated Kettle available? Etc.