Can I Use Hydrogen Peroxide to Clean My Coffee Maker?

Yes, you can use hydrogen peroxide to clean your coffee maker. Hydrogen peroxide is a natural and effective cleaning agent that can remove stains, mineral deposits, and bacteria from your machine. However, you need to follow some steps and precautions to ensure a safe and thorough cleaning process. In this article, we will explain how to clean your coffee maker with hydrogen peroxide, why it works, and what are the benefits and drawbacks of using it.

How to Clean Your Coffee Maker with Hydrogen Peroxide

Cleaning your coffee maker with hydrogen peroxide is not difficult, but it requires some preparation and patience. Here are the steps you need to follow:

  1. Gather the supplies. You will need hydrogen peroxide (3% concentration), water, a clean cloth or sponge, a soft brush or toothbrush, and white vinegar (optional).
  2. Remove and rinse the parts. Take out the carafe, filter basket, and any other removable parts of your coffee maker. Discard any coffee grounds or water left in them. Rinse them with warm water to remove any loose debris.
  3. Make a cleaning solution. In a large container, mix equal parts of hydrogen peroxide and water. For example, if you have a 12-cup coffee maker, you will need 6 cups of hydrogen peroxide and 6 cups of water.
  4. Fill the reservoir. Pour the cleaning solution into the water reservoir of your coffee maker. Make sure it is full, but not overflowing.
  5. Run a brewing cycle. Turn on your coffee maker and let it run a full brewing cycle without any coffee or filter. This will allow the cleaning solution to circulate through the machine and dissolve any stains, deposits, or bacteria.
  6. Repeat if needed. Depending on how dirty your coffee maker is, you may need to repeat the previous step one or two more times. You can use the same cleaning solution, or make a fresh one if it looks too dirty.
  7. Rinse with water. After the last brewing cycle, empty the carafe and the reservoir. Refill the reservoir with plain water and run another brewing cycle. This will rinse out any remaining traces of hydrogen peroxide from your machine. You may need to do this several times until the water comes out clear and odorless.
  8. Rinse with vinegar (optional). If you want to further disinfect and deodorize your coffee maker, you can use white vinegar instead of water for the final rinse. Vinegar is another natural cleaner that can kill germs and remove odors. Just fill the reservoir with vinegar and run a brewing cycle. Then, rinse with water until the vinegar smell is gone.
  9. Clean the exterior and the parts. While the coffee maker is still warm, wipe the exterior with a damp cloth or sponge. Use a soft brush or toothbrush to scrub the inside of the carafe, the filter basket, and any other parts that may have stains or residue. Rinse them well and dry them with a clean cloth or paper towel.
  10. Reassemble and enjoy. Put back all the parts of your coffee maker and plug it in. Your coffee maker is now clean and ready to brew a fresh and delicious cup of coffee.
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Why Hydrogen Peroxide Works

Hydrogen peroxide is a chemical compound that consists of two hydrogen atoms and two oxygen atoms. It is a clear, colorless, and odorless liquid that has many uses in medicine, cosmetics, and household cleaning. Hydrogen peroxide works as a cleaning agent because it has the following properties:

  • It is a mild acid that can dissolve mineral deposits, such as calcium and magnesium, that can clog your coffee maker and affect its performance.
  • It is an oxidizer that can break down organic stains, such as coffee oils and tannins, that can discolor your coffee maker and alter the taste of your coffee.
  • It is an antiseptic that can kill bacteria, mold, and other microorganisms that can grow in your coffee maker and pose a health risk.

Benefits and Drawbacks of Using Hydrogen Peroxide

Using hydrogen peroxide to clean your coffee maker has some advantages and disadvantages that you should consider before trying it. Here are some of them:


  • It is safe and non-toxic. Unlike some commercial cleaners that contain harsh chemicals, hydrogen peroxide is a natural and harmless substance that will not leave any harmful residue in your coffee maker. It is also safe for the environment and biodegradable.
  • It is effective and versatile. Hydrogen peroxide can clean and disinfect your coffee maker in one go, without the need for multiple products or steps. It can also be used to clean other appliances, such as kettles, microwaves, and refrigerators.
  • It is cheap and easy to find. Hydrogen peroxide is a common household product that you can buy at any drugstore, supermarket, or online store. It is also inexpensive and has a long shelf life.
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  • It can damage some materials. Hydrogen peroxide is a corrosive substance that can damage some metals, plastics, and rubber parts of your coffee maker. To prevent this, you should dilute it with water and rinse it thoroughly after use. You should also avoid using it on aluminum, copper, or brass surfaces, as it can cause discoloration or oxidation.
  • It can cause irritation or injury. Hydrogen peroxide can irritate your skin, eyes, or respiratory system if you come in contact with it. To prevent this, you should wear gloves, goggles, and a mask when handling it. You should also keep it away from children and pets, and store it in a cool and dark place.
  • It can lose its potency over time. Hydrogen peroxide can degrade and lose its effectiveness if exposed to light, heat, or air. To prevent this, you should use fresh hydrogen peroxide and store it in a dark and sealed container.


Hydrogen peroxide is a natural and effective cleaning agent that can help you keep your coffee maker clean and hygienic. However, you need to follow some steps and precautions to ensure a safe and thorough cleaning process. By doing so, you can enjoy a fresh and delicious cup of coffee every morning.