Last but not least is this energy efficient electric kettle from Vektra. It is by far the best kettle we tested for retaining water temperature for a long period of time. It has a keep-warm function that retains heat for up to 4 hours! It also enables you to save water, thanks to its large capacity options of 1.2, 1.5, and 1.7 litres.We chose the 1.5 litre option to test – the middle of the road.

First up, this temperature-control kettle has a very distinctive appearance, which you’re probably going to love or hate. Even if you hate it, however, you might still want to take a look at this variable-temperature kettle because it has a spout which has, literally, been designed for precision pouring. This means that if you’re using old-fashioned tea leaves with a strainer or coffee with a filter, then you’re going to find life a whole lot easier with this temperature-control kettle than with a variable-temperature kettle which has the standard, wide spout. The power, or energy consumption, of all electrical appliances is measured in watts (W) or kilowatts (kW) – a kilowatt is just 1,000 watts. So for example, 2.5kW is the same as 2,500W.Limescale easily build-ups in electric kettles, especially if you live in an area with hard water. Such build-ups lead to higher consumption of energy and affects the taste of your drinks. The answer to this is getting a kettle with built-in filters that will keep your water clean and your kettle as efficient as possible. Safety Functions

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. This kettle has a capacity of 1.8 liters which is more than enough for most people’s needs. It also comes with a stay-cool handle so you don’t have to worry about burning yourself. Safety features include an auto shut-off function as well as dry-boil protection. Added surge protection means that a power outage can’t (and won’t) destroy your new energy-efficient electric kettle.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.