Vacuum kettles make the body of the kettle like a thermos flask, so after boiling the water stays hot for up to 4 hours.
Lime scale will affect the performance of your kettle, it stops the element conducting heat properly and increases the time for water to boil. De-scale your kettle once in a while by boiling it half full with a 50/50 white vinegar and water mix, then leave for 15-20 mins. This will help ensure it is working at optimum efficiency, saving energy and money.
Most electric kettles now have the heating element concealed by a stainless steel plate, meaning you can put in the amount of water you need rather than having to make sure you’ve covered the element and needlessly boiling extra water.
A clear compartment is important to ensure you can see that you are using the correct amount of water.
Green kettles have two compartments so you can release as little as one cup of water from one compartment to the other to be boiled, a simple but effective way to reduce wasted energy and money.
Electric kettles turn themselves off, whilst hob kettles can be left boiling indefinitely, wasting energy and money.
Using boiled water from old-style electric kettles may be worsening skin allergies because of nickel leaching off exposed elements.
BPA (bisphenol A) is an industrial chemical used to make certain plastics and resins. When plastics are exposed to heat, the material starts to break down causing imperfections that allow unwanted chemicals to enter boiled water in plastic kettles. Studies show that BPA can imitate our body’s own hormones in a way that could be hazardous for health.
A typical electric kettle uses a surprising amount of energy – about 150 kWh per year. That is about 4% of the total electricity consumed in the home.