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descale your kettle and showerhead
Home Improvement

Descale your kettle and showerhead

Banish limescale with vinegar or citric acid and get your kettle and shower back to full power.

Time:
60 min
Cost:
low
Difficulty:
easy
Where:
Indoors
Best:
Solo

In a hard water area, limescale quietly degrades everything that heats or sprays water. A furred kettle uses noticeably more energy to boil, and a blocked showerhead loses pressure so gradually that nobody notices until it is fixed. To descale your kettle and showerhead costs almost nothing and takes one soak.

Why descale your kettle and showerhead is worth an hour

Limescale is calcium carbonate, which dissolves readily in mild acid. Vinegar and citric acid both do the job for a fraction of the price of branded descalers, which are frequently the same acids in different packaging. The process is almost entirely waiting, so an hour of soaking requires perhaps five minutes of actual attention.

How to descale your kettle and showerhead step by step

  1. 1

    Check your water hardness first

    Your water supplier publishes it. Hardness determines how often this needs doing, which varies from monthly to almost never.

  2. 2

    Fill the kettle with diluted acid

    Equal parts white vinegar and water, or citric acid powder per the packet. Boil, then leave to stand.

  3. 3

    Soak the showerhead

    Unscrew it into a bowl, or tie a bag of solution around it if it will not detach. Leave for an hour.

  4. 4

    Clear the nozzles

    Rub the rubber nozzles with a thumb, or use a pin on stubborn holes. This is where the pressure loss comes from.

  5. 5

    Rinse thoroughly and boil once

    Rinse the showerhead well and boil the kettle twice with fresh water, discarding both, before using it again.

Tips to get more out of it

  • Never use vinegar on natural stone or certain plated finishes. Check the manufacturer's guidance for anything decorative.
  • Descale on a schedule matched to your water hardness rather than waiting for visible build-up.
  • The same approach works on coffee machines and irons, though many have a specific cycle worth following instead.

Ways to mix it up

If you live in a soft water area, skip this and spend the hour on something else; descaling is close to unnecessary below moderate hardness. If your whole house is affected, research whether a water softener or scale inhibitor makes economic sense given your hardness level.

Descale your kettle and showerhead: frequently asked questions

How often should I descale a kettle?

Monthly in very hard water areas, every few months in moderate ones, rarely in soft water. Check your supplier's published hardness figure.

Is vinegar as good as a branded descaler?

For limescale, generally yes. Both work by dissolving calcium carbonate with mild acid, and vinegar costs a fraction of the price.

Does limescale actually waste energy?

Yes. A scaled heating element transfers heat less efficiently, so the appliance runs longer and wears out sooner.

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