How To Clean The Zojirushi Water Boiler: The Ultimate Cleaning Tutorial

A Zojirushi water boiler is a versatile and reliable item that produces boiling water when you’re in need of it. However, over time, mineral deposits and impurities can accumulate inside the boiler, affecting its performance and taste of the water.

Follow our comprehensive guide about how to clean the Zojirushi Water Boiler effectively. From preparing the cleaning solution to descaling the interior, we’ll cover all the essential tips and tricks to ensure your water boiler remains in optimal condition.

Get ready to enjoy clean and refreshing hot water with your Zojirushi Water Boiler!

Zojirushi Water Boiler: Common Features

The Zojirushi Water Boiler has revolutionized the way we enjoy hot beverages and simplified our daily lives. With its advanced technology, this water boiler has become an important appliance in kitchens, offices, and cafes around the world.

How To Clean The Zojirushi Water Boiler

The Zojirushi Water Boiler has revolutionized the way we enjoy hot beverages and simplified our daily lives. (Source: Internet)

First, we will explore the superb features of the Zojirushi Water Boiler, shedding light on why it has become a must-have appliance for those seeking efficiency, convenience, and a perfect cup of hot water every time.

  • Temperature Control: With advanced Micom Technology, Zojirushi water boilers typically offer precise temperature control, allowing you to select and maintain the desired temperature for your hot water.
  • Safety Features: Zojirushi water boilers typically incorporate safety features like auto shut-off and boil-dry protection to prevent accidents and damage from overheating or lack of water.
  • Descaling Feature: Some Zojirushi models come with descaling and cleaning modes or indicators to help maintain the performance and longevity of the appliance.
  • Innovative Dispensing System: Zojirushi water boilers often offer a one-touch dispensing system, allowing you to easily pour hot water without lifting or tilting the unit.
  • Keep Warm Function: Zojirushi water boilers often include a keep warm function that maintains the water at a set temperature for an extended period, ensuring hot water is readily available when needed.
  • Additional features: Mode Dechlorination, Robust folding handle for easy mobility, lock/unlock function.

How To Clean The Zojirushi Water Boiler

1. How To Clean The Zojirushi Water Boiler With VINEGAR

The most common cleaning solution is vinegar, and with its effective and straightforward cleaning process, you can thoroughly wash your water boiler.

  1. Before starting to clean, unplug the water boiler
  2. Empty the water boiler
  3. Prepare the cleaning solution with vinegar and water. The amount will depend on the size of your water boiler, but a 50/50 ratio should work well.
  4. Add the vinegar and water mixture to the water boiler.
  5. Plug in the power and turn on the appliance. Allow the solution to heat up until it starts to steam.
  6. Once the water boiler starts steaming, turn off the unit and unplug it again. Let the mixture rest in the boiler for approximately an hour to give the vinegar time to dissolve any mineral or scale accumulation.
  7. Drain the solution after an hour. You can use the dispenser or the drain valve if available.
  8. To get rid of any vinegar residue, carefully wash the water boiler with fresh water. To ensure that all vinegar is eliminated, repeat this process many times.
  9. Plug the water boiler after adding fresh water to it. To get rid of any vinegar flavor or residue, run a complete cycle of hot water.

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2. How To Clean The Zojirushi Water Boiler With CITRIC ACID

Citric acid is another method that we utilize frequently. You can easily find citric acid on the market for everyday usage to clean your water boiler.

  1. Prepare the necessary materials: You will need citric acid powder, water, a soft cloth or sponge, and a container large enough to hold the water boiler.
  2. Empty the water boiler: Make sure the water boiler is unplugged and completely cooled down. Remove any remaining water from the boiler by pouring it out.
  3. Prepare the cleaning solution: As directed by the manufacturer, fill the container with warm water and add citric acid powder. Typically, 2-4 tablespoons of citric acid per liter of water should be sufficient.
  4. Fill the water boiler with the citric acid solution: Ensure that the solution covers the interior surfaces of the boiler.
  5. Let the solution rest: Spend about an hour letting the citric acid solution rest in the water boiler. This will aid in removing any minerals or scales.
  6. Scrub the interior: After the solution has soaked, use a soft cloth or sponge to scrub the interior surfaces of the water boiler.
  7. Rinse thoroughly: Once you have finished scrubbing, empty the citric acid solution from the water boiler. To get rid of any citric acid, repeatedly wash the boiler with fresh water.
  8. Reassemble and refill: Once the water boiler is completely dry, assemble any removable parts and fill it with fresh water.
  9. Boil and discard the water: Plug the water boiler and let it heat the water until it reaches boiling point. Discard this first batch of boiled water to ensure any remaining citric acid or residue is removed.

Cleaning A Zojirushi Water Boiler:  What To Remember?

Here are some useful tips to clean your Zojirushi water boiler:

  • Read carefully the cleaning and servicing instructions provided by the manufacturer.
  • Unplug the Boiler: To prevent any mishaps, ensure that the water boiler is unplugged from the electrical outlet before beginning to clean.
  • You should use a mild detergent. Avoid using cleaning products with abrasives since they might harm the water boiler’s surface.
  • Repeatedly wash the water boiler with fresh water to get rid of any vinegar or detergent residue.
  • To aid in preventing mineral accumulation, think about utilizing a water filter. By removing harmful substances from the water, water filters can help your water boiler operate more efficiently and last longer.
  • Set scheduled times for cleaning.
How To Clean The Zojirushi Water Boiler

By removing harmful substances from the water, water filters can help your water boiler operate more efficiently and last longer. (Source: Internet)

How To Use A Zojirushi Water Boiler

  • Fill the water boiler. Close the lid securely until you hear a click or see that it is properly sealed, then plug in the power cord
  • Select the Desired Temperature: Most Zojirushi water boilers have temperature settings that allow you to choose the desired hot water temperature. Use the control panel or buttons on the front of the boiler to select your preferred temperature.
  • Press “Start” or “Boil” to begin the boiling process, then wait for the water to get heated. In order to heat the water to the proper temp, the water boiler will need a few minutes.
  • Dispense Hot Water: Once the water has reached the set temperature, you can dispense hot water from the boiler. Some models have a lever or button that you need to press to release the water, while others have a pump system.
  • Zojirushi water boilers usually have features like a timer or a “Keep Warm” option to help maintain the proper temperature.
  • Unplug the water boiler from the power source after using it and let it cool.

Why Is Water Boiler Cleaning Important?

How To Clean The Zojirushi Water Boiler

regular cleaning of the water boiler is essential to maintain its performance, ensure water quality, promote safety, and prolong its lifespan. (Source: Internet)

Cleaning the water boiler is important for several reasons:

  • Efficiency: Over time, mineral deposits such as limescale can build up inside the water boiler. The heating element may become less efficient as a result of these deposits. To get rid of these deposits and keep the boiler operating efficiently, routine cleaning is necessary.
  • Taste and Odor: If the water boiler is not cleaned regularly, it can develop a foul taste or odor. These problems may be resolved and the water is kept clean and fresh by cleaning the boiler.
  • Longevity: The service life of the water boiler may be increased by monthly maintenance and cleaning. By removing mineral deposits and preventing corrosion, you can help prevent damage to the internal components of the boiler, which can lead to costly repairs or the need for a replacement.
  • Safety: If water boilers aren’t cleaned, they can produce harmful bacteria like Legionella, which can be swallowed or breathed to cause major health problems. The risk of bacterial development is reduced with regular cleaning, which also ensures the water’s safety for consumption.
  • Energy Savings: A clean water boiler operates more efficiently, requiring less energy to heat the water.

Overall, regular cleaning of the water boiler is essential to maintain its performance, ensure water quality, promote safety, and prolong its lifespan.


1. What temperature options does the Zojirushi water boiler have?

Here are some common temperature settings found on Zojirushi water boilers:

  • 160°F (70°C): This setting is suitable for delicate teas or if you prefer a lower temperature for your hot beverages.
  • 175°F (80°C): This is an ideal temperature for green teas.
  • 195°F (90°C): This temperature is widely used for many types of teas, including black teas, oolong teas, and herbal infusions.
  • 208°F (98°C): This is the highest temperature setting available on many Zojirushi water boilers. It is frequently used to prepare coffee, instant soup, and several hot drinks.

2. Can you descale a Zojirushi water boiler?

You can prepare your own descaling solution by combining water and vinegar, or you can purchase a commercial descaling solution made especially for equipment like water boilers. Several Zojirushi water boiler models also have their own descaling mode.

3. How frequently should the Zojirushi water boiler be cleaned?

The frequency of cleaning your Zojirushi water boiler depends on several factors, including the quality of your water and how frequently you use the appliance. However, as a general guideline, every one to three months, your Zojirushi water boiler should be cleaned.

4. What cleaning method works best for the Zojirushi water boiler?

A mix of water and vinegar should be used to clean your Zojirushi water boiler. To get rid of any residual deposits, you can also try a solution of citric acid. Abrasive cleaners and chemicals should not be used since they might damage the water boiler’s inside.

5. Can I clean the inside of the water boiler with a scrub brush?

It is not advised to clean the Zojirushi water boiler using a scrub brush or sponge. The efficiency and service life of the water boiler may be impacted by these tools’ potential ability to destroy its surface. Instead, carefully clean any dirt or debris using a soft cloth.

6. Is it possible to clean the water boiler using the dishwasher?

Your Zojirushi boiler should not be placed in the dishwasher. The water boiler might sustain damage and suffer malfunctions due to the high temperatures and detergent.

7. Where are Zojirushi water boilers made?

Zojirushi Corporation is a Japanese company specializing in manufacturing various kitchen appliances, including water boilers. Zojirushi water boilers are primarily made in Japan.

However, it’s worth noting that manufacturing locations can change over time, so it’s always a good idea to check the product packaging or contact Zojirushi directly for the most up-to-date information on the origin of their products.

8. Do Zojirushi water boilers have an auto shut-off function?

Yes, Zojirushi water boilers typically have an auto shut-off feature. When the water reaches a specific temperature, this function is intended to shut off the water boiler automatically.

9. Can I heat other liquids in the water boiler?

The answer is No. The water boiler is exclusively for boiling water.


In conclusion, knowing how to clean the Zojirushi water boiler is crucial for maintaining its performance and longevity. By following the recommended steps and using appropriate cleaning solutions, you can effectively remove mineral deposits and ensure the purity of your hot water supply.

Regular maintenance not only enhances the taste and quality of the water but also prevents potential issues such as clogging and malfunctioning. With proper care, your Zojirushi water boiler will continue to provide clean and hot water for years to come.


About Yuu Sato

Yuu Sato has been working in hospitality industry since 2003. In the past, he used to work as a tour guide and now he is running his business of supplying comfortable accommodations in Japan. Thanks to this experience and his passion for writing blog, the articles by him provides awesome tips and things to do when you are traveling in the country of cherry blossoms.


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