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How to descale the washing machine

7 October 2025

Your washing machine uses quite a few liters of water each week. That water contains lime (calcium carbonate). The harder the water, the more lime deposits remain in the machine. The result? Limescale buildup in the drum, hoses, and heating element. This causes your machine to use more energy, your laundry to smell less fresh, and parts to wear out faster. Fortunately, you can easily prevent this by descaling your washing machine regularly.

How to descale the washing machine (step-by-step guide)

  • Empty the drum and check that no laundry is left inside
  • Choose a suitable descaling product, such as a special washing machine descaler or cleaning vinegar
  • Pour the product into the detergent drawer or directly into the drum
  • Run a program at a minimum of 60 degrees Celsius, without any laundry
  • After the cycle, leave the door open so the machine can dry properly

With these simple steps, you can effectively tackle limescale buildup.

How often should you descale a washing machine?

The frequency depends on the water hardness in your area. In regions with hard water, once a month is wise. In softer water areas, once every three months is sufficient. Ask yourself: do I notice that my machine smells less fresh or that wash cycles take longer? Then it’s time to descale.

A good moment to descale the washing machine is right after an intensive period of use, for example after a vacation or big cleaning spree. If you often wash at low temperatures, descaling more frequently is also recommended. At low temperatures, lime doesn’t dissolve as well.

What is the best descaler for a washing machine?

A dedicated washing machine descaler is the most effective and safest option. These products are tested on rubbers, metals, and hoses, keeping your machine in top condition for longer. Be sure to check the hardness of your water and choose accordingly.

Descaling with vinegar

Use white vinegar or cleaning vinegar to descale your washing machine. Pour about half a liter into the drum and run a hot wash program. Note: using cleaning vinegar too often can damage rubber parts. Alternate it with a milder descaling product.

Descaling with a dishwasher tablet or baking soda

Some people try a dishwasher tablet or baking soda (bicarbonate of soda). Yes, it can work, but not as effectively as a product specifically designed for washing machines. A dishwasher tablet foams and can leave soap residues behind. Baking soda works well against unpleasant odors but is less effective against limescale buildup.

How does limescale form in your washing machine?

Lime occurs naturally in tap water. When heated, it settles on the heating elements and drum. The higher the temperature, the faster this happens. Over time, a hard white layer forms that can’t easily be wiped away. This reduces your washing machine’s efficiency.

How to prevent limescale buildup in your washing machine?

  • Occasionally run a 60-degree cycle with an empty drum and a splash of vinegar or descaler
  • Use the correct amount of detergent — too much soap leaves residues that trap lime
  • Wipe the door and rubber seals after every wash
  • Leave the door open so moisture can escape

By taking preventive action, your machine will need less frequent intensive descaling.

What if you rent a washing machine from Homie?

At Homie, you can easily rent a washing machine, dryer or washer-dryer combo. The great thing is that you don’t have to worry about high purchase costs or expensive repairs. Homie ensures that the appliances are always well-maintained. Still, it’s a good idea to perform small maintenance tasks yourself, such as regular descaling. This way, you and Homie together keep your washing machine running optimally.

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