
Kettles are an essential appliance for tea lovers, but they can be a breeding ground for limescale, which is caused by the buildup of calcium carbonate, calcium, magnesium, and other minerals found in water. Limescale buildup can affect the taste of your tea and shorten the lifespan of your kettle. Luckily, descaling a plastic electric kettle is a simple process that can be done using household ingredients such as vinegar, lemon juice, or baking soda. Descaling should be done regularly, with some sources recommending a monthly descaling routine. This guide will teach you how to descale your plastic electric kettle effectively and safely.
| Characteristics | Values |
|---|---|
| Frequency of descaling | Once a month or every four to eight weeks |
| Reasons to descale | Prevent mineral ingestion, prolong appliance life, improve taste, prevent limescale buildup |
| Descaling solutions | Vinegar, citric acid, lemon juice, baking soda, commercial descaling products |
| Vinegar solution | 1 part vinegar and 3 parts water, or equal parts vinegar and water |
| Citric acid solution | 500ml water and 2 spoonfuls of citric acid |
| Lemon juice solution | 1 tbsp lemon juice, water, and baking soda |
| Baking soda solution | 1 tbsp baking soda, water |
| Commercial descaling products | Urnex Dezcal, Quickshine Kettle Descaler Sachets, Ecozone, Chef Aid Kettle Descaler |
| Additional tips | Use a non-abrasive sponge or cloth, avoid exposing electrical components to water, clean the filter, open a window during descaling |
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What You'll Learn

How to make a descaling solution at home
Descaling your kettle is important as it helps prevent the buildup of limescale, which can affect the taste of your hot beverages. Limescale is a common buildup of minerals composed primarily of calcium carbonate. While plastic kettles are made of polypropylene, which doesn't attract scale, the metal base plate will. Descaling your kettle every four to eight weeks will not only prevent you from ingesting solid minerals but can also help your appliance last longer.
Vinegar Solution
A diluted white vinegar solution is usually a safe and effective way to descale your electric kettle. The mild acidity in vinegar can help break down mineral buildup. To make this solution, fill your kettle with equal parts vinegar and water. Bring the mixture to a boil and let it sit for at least half an hour before dumping it out and rinsing the kettle thoroughly. You may need to repeat this process if there is a heavy limescale buildup. To get rid of any lingering vinegar odour or taste, fill the kettle with water, bring it to a boil, and drain it. Repeat this step twice or thrice.
Citric Acid Solution
Citric acid is another effective and safe cleaning solution for descaling kettles. It is stronger than vinegar and does not leave a lingering scent. To make this solution, mix 500ml of water with two spoonfuls of citric acid. Bring this mixture to a boil and let it sit for half an hour before dumping it out and rinsing the kettle.
Lemon Juice Solution
Lemon juice can also be used as a descaling solution. The acid in lemon juice acts as a natural bleach and antiseptic, and its energizing aroma can be pleasant. Pour a tablespoon of lemon juice into the kettle, add enough water to cover the base, and heat the solution. Let it sit and then lightly scrub the interior with a non-abrasive sponge or microfiber cloth before rinsing and drying.
Commercial Descalers
If you do not want to make a descaling solution at home, you can purchase commercial descaling products. Quickshine Kettle Descaler Sachets can be used on all kettles and do not contain hazardous chemicals. You can also use Urnex Dezcal, which is available on Amazon and other retail locations.
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How to use a commercial descaling solution
To descale a plastic electric kettle using a commercial descaling solution, follow these steps:
First, ensure your kettle is unplugged and allow it to cool down completely. It is important to never submerge the kettle in water or other liquids. Once it is cool, empty any remaining water from the kettle. Then, refer to your owner's manual for care and cleaning tips specific to your kettle.
Next, follow the instructions on the commercial descaling solution's label. Most commercial descaling solutions will require you to pour the solution directly into your kettle, add a specified amount of water, and allow the mixture to sit for a certain period. For example, with Urnex Dezcal, you can pour the solution into your kettle, add water, and let it sit for up to 30 minutes.
After the solution has been allowed to sit, discard the descaling mixture and rinse the kettle with clean, cold water. Be sure to rinse the kettle thoroughly, as some commercial descaling solutions may contain ingredients that are not natural and could be unhealthy if ingested.
Finally, fill the kettle with fresh water, bring it to a boil, and drain the water. Repeat this process at least once more to ensure any residue or taste of the descaling solution is removed. Your kettle is now ready to use again.
It is recommended to descale your kettle every few months or more frequently if you live in an area with hard water and experience significant limescale buildup.
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How often to descale your kettle
How often you should descale your kettle depends on several factors, including the mineral concentration in your water source and how often you use the kettle. If you use your kettle daily, it is recommended that you descale it regularly, around once a month. However, if you have hard water, you may need to descale your kettle more frequently, as hard water has a higher mineral content than soft water.
Some signs that your kettle is due for a descaling include stains on the bottom of the interior that resemble water spots or rust, which is typically a buildup of limescale composed of calcium carbonate. Limescale can also present as light-coloured stains, usually white or off-white. Other symptoms of scale buildup include lagging temperature readout response, over-boiling, inaccurate temperatures, and poor heating efficiency.
If you use filtered water in your kettle, you may not need to descale it as frequently. Some people who use filtered water report descaling their kettle only once a year or less frequently.
To descale your kettle, you can use vinegar, citric acid, or a commercial descaling product. Vinegar and citric acid are safe and effective solutions, but citric acid is stronger and does not leave a lingering scent like vinegar. To use vinegar, fill your kettle with equal parts vinegar and water, boil the mixture, and let it sit for at least 30 minutes before dumping it out and rinsing the kettle thoroughly. Repeat this process with just water to remove any lingering vinegar odour or taste.
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How to clean the exterior of your kettle
To clean the exterior of your kettle, start by filling a bowl with warm water and a few drops of mild dish soap. Dip a soft, non-abrasive sponge or cloth into the soapy water and gently wipe down the sides and base of the kettle. Be careful not to get any water inside the kettle, especially if it is electric. If there are any stubborn stains or grease spots, gently apply a little more pressure with the sponge, but avoid using any abrasive pads or wire brushes as these can scratch the surface.
Once you have removed all the grime and grease, dip a clean cloth into the warm water and gently wipe down the kettle again to remove any soap residue. Finally, dry the kettle with a soft, dry cloth, gently rubbing the surface to create a lustrous shine. You can also apply a small amount of baby oil to the cloth to remove fingerprints and add extra shine.
To keep your kettle looking spotless, it is recommended to wipe down the exterior with a damp, microfiber cloth daily, removing any water splashes and residue, and then drying and polishing with a soft cloth.
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How to clean the interior of your kettle
Limescale is a common problem in kettles, caused by a buildup of calcium, magnesium, and other minerals found in water. This can affect the taste of your drinks and the lifespan of your kettle. Luckily, there are several ways to clean the interior of your kettle and remove limescale.
Firstly, it is important to note that you should always refer to your kettle's owner's manual for care and cleaning tips. Before you start cleaning, unplug the kettle and remove any leftover liquid. You should also never immerse an electric kettle in water.
A popular method for cleaning the interior of your kettle is to use vinegar. Fill the kettle with equal parts white vinegar and water, bring it to a boil, and then let the solution sit for 20 minutes to overnight before rinsing it out. You may need to repeat this process to remove any lingering vinegar taste or smell.
Alternatively, you can use citric acid, lemon juice, or baking soda. For citric acid, use two spoonfuls with 500ml of water, and for lemon juice or baking soda, use two tablespoons with water. Bring the mixture to a boil and let it sit for at least half an hour before dumping it out and rinsing the kettle thoroughly.
There are also commercial descaling solutions available, which you can use according to the manufacturer's instructions.
Remember to dry your kettle with a soft cloth after rinsing to prevent water spots.
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Frequently asked questions
It is recommended to descale your kettle every four to eight weeks, or at least once every two to three months. If you use your kettle daily, you should descale it more often, about once a month.
You can use household products such as vinegar, lemon juice, citric acid, or baking soda. Vinegar is a good option as its mild acidity can help break down mineral buildup. You can also use commercial descaling solutions, such as Urnex Dezcal or Quickshine Kettle Descaler Sachets.
Fill your kettle with equal parts vinegar and water, bring it to a boil, and let the solution sit for at least 20 minutes to overnight before rinsing it out. Repeat this process a few times to remove any lingering vinegar odour or taste.
You may notice a white substance or limescale buildup inside your kettle, which can affect the taste of your tea or coffee. Your kettle may also become less efficient, with symptoms such as lagging temperature readout response, over-boiling, inaccurate temperatures, and poor heating efficiency.






















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