Upkeep
Descaling an electric kettle
The chalky white film that forms inside a kettle is limescale — mineral deposits left behind when water is boiled repeatedly. It is harmless to ingest in small amounts, but a thick layer over the heating element makes the kettle slower and noisier and shortens its life. In hard-water parts of the country it returns quickly, so a light routine beats an occasional deep clean.
Before you start
Unplug the kettle and let it cool. Check the manual first — a few manufacturers advise against acids on certain coatings and supply their own descaler instead.
Method one: white vinegar
- Make a mild solution. Fill the kettle about halfway with equal parts water and white vinegar.
- Bring it to a boil, then switch off and leave it to stand for 20 to 30 minutes so the acid works on the scale.
- Pour out and rinse thoroughly. Stubborn patches wipe away with a soft cloth.
- Boil plain water once or twice and discard it to clear any taste before normal use.
Method two: citric acid
Citric acid leaves less odour and is sold as a food-grade powder. Dissolve a tablespoon in a kettle of water, boil, and let it stand as above before rinsing. It is a good choice if the vinegar smell bothers you.
Mind the heating element
Never scrape a visible element or a flat hidden plate with anything metal. Acids dissolve scale without scratching the surface; abrasion can cause real damage.
How often, and why it varies
Water hardness differs widely across Canada, so there is no single interval. As a practical rule of thumb, descale every four to six weeks where scale is obvious within a couple of weeks, and less often where it barely appears. Let the inside of your own kettle set the schedule rather than a fixed calendar.
| Sign | What to do |
|---|---|
| White flakes in poured water | Descale now |
| Longer time to boil | Descale and check the element |
| Rattling or extra noise | Usually scale on the element — descale |
Slowing it down
- Empty the kettle after use rather than leaving standing water.
- Boil only what you need so less water is processed overall.
- Rinse weekly even between full descales.