What to Put In a Humidifier to Prevent Mold

What to Put In a Humidifier to Prevent Mold

Humidifiers help us regulate and maintain optimal amounts of moisture in our homes. This can be very important especially during winters. During cold times, people try various methods of increasing their room temperatures which as a result heats up the indoor air. Heated air reduces its moisture amounts resulting to dry air conditions s in our rooms. Having dry air can cause health problems as it is known to cause sinus passage and also dry skin.

You can have the above conations contained with your humidifier. However, your efforts can be hampered if your humidifier’s functionality is inhibited in any way. Mold is one cause reason for the impaired functionality of humidifiers.

You can prevent mold by employing various measures. Precisely, I would like to discuss what you can put in your humidifier to prevent mold.

Additives which will prevent mold from forming in your humidifier

Use Vinegar

I would go on to stress the use of distilled white vinegar. By adding a cup of white vinegar, you will be able to prevent the growth of mold inside your humidifier. It easily kills mold spores and doesn’t cause any harm or damage to the components of your humidifier. Being a natural antimicrobial, it will destroy any mold that it comes across and also prevent any further growth.

White vinegar is also an antibacterial additive. It helps you keep your humidifier safe and free from bacteria. This is very important since these bacteria can impact your health negatively. Using vinegar to keep your humidifier clean and free from these bacteria is a good remedy for you and your equipment.

Its ability to remove deposited masses of calcium makes it one of the best options. It also has a less pungent smell compared to the regular vinegar


Bleach is made of sodium hypochlorite and its addition in your humidifier will prevent the growth of mold in the inside components of your appliance.

This additive is an ideal disinfectant for your humidifier. Depending on how regularly you use your appliance, you need regular disinfection for your humidifier. For those that use them on a daily basis, they should at least disinfect them using the bleaching agent at least one every week. 

The ratio should be half a cup of bleach for one gallon of water. Add the solution to your humidifier. This will kill any mold trying to grow inside your appliance.

Bleach, however, should not be used for a long time since it can lead to damage of the hoses.

Humidifier tablets

Some of us may not have any trust in natural products. There are products that you can pick from the shelf such as humidifier tablets. These tablets prevent the growth of mold in your humidifier. They also prevent the buildup of lime.

Purchase these tablets and drop them inside the water reservoir of your humidifier. With the tablets, you can also prevent bad smells.

Hydrogen Peroxide

The most common use of hydrogen peroxide is as an antiseptic. However, the uses are diverse. This includes using them in humidifiers to prevent mold growth. Hydrogen peroxide is one of the best antibacterials. It easily kills macrobios which includes our molds. This is one of the cheapest methods of preventing mold from growing inside your humidifier.

Tea tree oil

This is a natural essential oil distilled from the Melaleuca plant which is found in Australia. It is used against fungal infections. This oil possesses anti-inflammatory, antiviral, antifungal, and antibacterial properties.

Its antifungal property makes it efficient for preventing the growth of mold. Mold is a fungus that grows in the form of hyphae. Tree oil causes no health problems. The only problem is how to get it. Otherwise, it is a perfect remedy for preventing the growth of mold in your humidifier.

Apart from the above additives, you can consider the following methods of preventing mold growth in humidifiers.

Change the water in your humidifier on a regular basis.

Backwater can be a perfect place for mold spores and bacteria. Try to clean and refill your humidifier with freshwater very regularly. If you can afford to do it on a daily basis, that would be great.

Use vinegar to clean your humidifier often

Vinegar is a perfect addition to preventing mold growth and lime buildup. Thus, it is also good for cleaning your humidifier. Use a soft cloth and wet it with vinegar and wipe all the components. Ensure all removable components are cleaned. After cleaning, wait for them to dry before filling your humidifier with fresh water.

Use bleach to kill mold

Somehow, mold may successfully grow inside your humidifier. In that case, spill a bleach solution inside and outside your humidifier. You can use it to clean the humidifier before rinsing the water reservoir with distilled water.

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