How To Make A Humidifier Filter At Home (Easy DIY)

  • By: madison
  • Date: November 24, 2022
  • Time to read: 9 min.
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Have you ever wondered how to make your filter for your humidifier? And if your response is yes, you’ve found the ideal location!

Humidifiers are very popular during the warm summer months. However, did you realize that your humidifier is a breeding ground for germs like mold and mildew? These problems can make your humidifier less effective or dangerous to breathe in.

I’ll show you how to make a simple filter for your humidifier in this post.

Key Takeaway’s

  • A humidifier filter can be made at home using a coffee filter and some cotton balls.
  • To make the filter, first cut the coffee filter to fit the humidifier’s opening.
  • Next, glue the cotton balls around the edge of the coffee filter.
  • Finally, place the filter in the humidifier’s opening and allow it to dry.
  • The humidifier filter will help to keep the air in your home moist and comfortable.
How To Make A Humidifier Filter At Home
How To Make A Humidifier Filter At Home

Steps To Make A Humidifier Filter At Home

When it comes to humidifiers, the filter is essential. That’s why it’s so vital to make a humidifier filter at home. In addition, you may extend the life of your filter by following these simple instructions.

Find The Right Material For Making The Filter

Find The Right Material For Making The Filter
Find The Right Material For Making The Filter

When choosing a humidifier filter material, there are a few things to consider. The most crucial factor is the ability of the material to absorb water.

This is why materials like sponge, foam, and cotton are often used in filters. The material’s ability to filter out pollutants from water is another critical consideration. This is why materials like activated carbon are often used in filters.

When choosing the suitable material for your filter, it is important to consider both the absorbency and the ability to remove impurities.

If you are looking for a material that can do both, the sponge is a good option. Foam and cotton are also good options, but they may not be able to remove all impurities from the water.

Activated carbon is a good option for removing impurities, but it is not as absorbent as other materials.

Gather The Materials You Need

To make your humidifier filter, you will need the following materials:

  • An airtight container
  • A damp cloth
  • An evaporator coil
  • An airtight container
  • Scissors
  • Staple
  • Drying rack
  • Needle and threads
  • Humidifier

Cut The Material To Size

Cut a piece of paper into a rectangle that is twice as big as the filter. Next, tape it over the filter on all four sides. Finally, hang the humidifier upside down so that water can run through the filter.

Remove the air filter from the humidifier and replace it with the newly cut filter. Make sure to keep the humidifier’s water reservoir full to ensure the proper function of your homemade filter!

Attach The Materials Together

You need the filter, desiccant, and some tape or a sticker to seal the pieces together. First, take the filter out of the package. Then locate the desiccant.

Seal it together with tape or a sticker. Place the filter on top of the desiccant. Ensure that the filter is correctly moistened before using it to humidify your home.

Trim The Excess Material

You can also use your fingers or a paper towel to delicately take off the excess material built up on the filter.

Trim the excess material from the filter using a sharp knife or scissors. Be sure to leave at least 1/4 inch of material on the filter so it can be inserted into the humidifier. If the filter is too small, it will not work correctly and must be replaced.

What To Do With Homemade Humidifier Filter

What To Do WIth Homemade Humidifier Filter
What To Do WIth Homemade Humidifier Filter

Here are some of the things to do with the homemade humidifier filters:

Place The Filter In The Humidifier

To make a humidifier filter at home, you will need a piece of cloth, a coffee filter, and a rubber band. First, cut the fabric into a square that is big enough to fit over the opening of the humidifier.

Make a half-and-half fold with the coffee filter before using it. It should be in the center of the cloth square after you’re done. Next, fold the cloth around the coffee filter and secure it with the rubber band.

Place the homemade filter in the humidifier and turn it on.

Secure The Filter

Keeping your homemade humidifier filter healthy and secure is essential for its long-term performance. To secure the filter, wrap it in a layer of tape.

To ensure your filter is secure, start by stacking a few filters on top of each other. This will create extra space and make it easier to work with.

Next, take the humidifier’s base and place it on top of the stack of filters. Make sure the humidifier works before securing the unit.

Install The Filter

First, make sure that the wick is in the humidifier to install the filter. The wick is the part of the humidifier that soaks up water and helps create evaporation. If the wick is not in the humidifier, the humidifier will not work.

Next, take the wick filter and line it up with the small holes on the side of the humidifier. Ensure that the wick filter is tight against the humidifier so that no air can escape. If the wick filter is not tight, the humidifier will not work correctly.

Finally, fill the humidifier with clean water. Water quality is essential because it will determine how much moisture is in the air. The water tray should be filled with distilled water or clean, filtered water.

Now, your humidifier is ready to use!

Test The Filter

  • To test the filter, you will need a small amount of water.
  • Fill the humidifier with water from your water supply.
  • If you have a dirty humidifier, you may see limescale or growth of bacteria.
  • You may see limescale buildup on the filter if you have hard water.

Check For Leaks

To check for leaks in your homemade humidifier filter, check the water tank for mineral deposits. If you see any calcium or other hard water deposits, this could indicate a leak.

Another approach to check for leaks is to place a bowl of water in the humidifier and monitor the water level. If it does, this means that moist air is escaping, and you may have a leak.

To fix a leak, replace the gasket or seal causing the problem.

Dry The Filter

If your humidifier filter is made at home, you will need to dry it out before using it again. Here are some tips on how to do this:

  • Remove the filter from the humidifier.
  • Rinse the filter with clean water.
  • Wipe the filter with a clean, dry cloth.
  • Place the filter in a sunny spot and allow it to air dry completely.
  • You can reuse the humidifier filter after it has dried.

The Benefits Of Making Your Humidifier Filter

The Benefits Of Making Your Humidifier Filter
The Benefits Of Making Your Humidifier Filter

If you are looking for a more cost-effective and eco-friendly option for your humidifier, you may consider making your filter.

Aside from being more cost-effective and ecologically responsible, creating your humidifier filter has several advantages. For example, you can reuse materials that you would otherwise throw away, and you can be sure that your filter is made with safe and non-toxic materials.

Making your humidifier filter is a great way to save money and help the environment.

Safety Precautions To Take

While making a humidifier filter at home, be sure to avoid any accidents. Some safety measures to take while making a humidifier filter at home include:

  • Wearing gloves and a mask to prevent inhaling any harmful particles
  • Use a dust mask to avoid breathing in any dust
  • Avoiding any contact with the skin
  • Washing your hands after handling any materials

Types Of Homemade Humidifier Filter

There’s nothing like an excellent humidifier to relieve the dry air conditions in the home. Here are some of the homemade humidifier filters:

Cloth Filter

Clothes can be used as a filter for a humidifier. This is because they can absorb water and hold onto it. This can be beneficial as it can help to improve the air quality in a room and make it more comfortable to breathe.

To avoid making the air quality worse, ensure the cloth is thoroughly cleaned before using it as a filter.

Sponge Filter

If you’re looking for the best homemade humidifier filter, you should go for a sponge filter. They are simple to use and may be used in water and air humidifiers, making them ideal for compact rooms.

It’s also worth noting that they’re more cost-effective than other forms of filters. Sponge filters are not only inexpensive but also simple to maintain, making them an excellent solution for those with busy schedules.

Foam Filter

Depending on the type of filter you use, changing your humidifier filter every 3 to 6 months is critical. Regular filters work well for small spaces and are cheaper, but they can get clogged up over time.

Foam filters are better for large spaces and can last longer, but they are more expensive.

Polyester Fiber Mesh Filter

If you’re looking for a good humidifier filter that is easy to clean, you should consider using a polyester fiber mesh filter. It is effective in trapping larger particles and allergens, but it can also be cleaned easily and quickly.

Additionally, this type of filter is a homemade humidifier filter that is affordable, making it the perfect choice for people on a budget.

What Needs To Be Included In A Humidifier Filter?

What Needs To Be Included In A Humidifier Filter
What Needs To Be Included In A Humidifier Filter
  • A homemade humidifier filter should include activated charcoal, which will help remove impurities from the air.
  • The filter should also include a layer of fabric, which will help to trap larger particles.
  • The final layer of the filter should be a layer of mesh, which will allow air to flow through while still trapping smaller particles.


If you’re looking for an easy way to humidify your home, a homemade humidifier filter is a perfect solution! Follow the methods mentioned in this article.

You’ll be able to make a humidifier filter that will help you maintain a comfortable and healthy air-conditioning environment. To get the most pleasing results from your humidifier filter, take the essential measures and include the proper components!

Making a humidifier filter at home is a great way to safeguard your health and improve the quality of your air. By following the steps outlined in this blog post, you’ll be able to make a humidifier filter that will help you breathe easier and prevent common respiratory problems.

In addition, by replacing the humidifier filter regularly, you’ll be able to extend the lifespan of your humidifier and achieve better air quality. Are you ready to start making your own humidifier filter? Let us know in the comments below!

Frequently Asked Questions

What are the benefits of making a humidifier filter at home?

According to the Mayo Clinic, humidifiers with filters can help improve the air quality in the room by removing pollen, dust, and other allergens. Filtered air also feels cooler and less dry than air that hasn’t been humidified, which can help people feel more comfortable.

Can I use a humidifier with a filter that’s not specifically made for it?

While it is possible to use a humidifier with a filter that is not specifically made for it, this may result in reduced humidification performance. The humidifier may also not work as effectively if the filter is not designed for humidifier use. It is best to consult the humidifiers owner’s manual for more information on the compatibility of humidifier filters.

When making a humidifier filter at home, what are the possible complications?

The most common complications when making a humidifier at home are clogged filters and mold growth.

What can I use instead of a humidifier filter?

If the humidifier is filterless, the water will condense on the glass and need to be replaced.

Is it possible to use a towel to filter a humidifier?

There is no scientific evidence to suggest that using a towel as a humidifier filter will improve the air quality or help prevent the growth of mold and bacteria.


Kenneth Sine
Kenneth Sine

My name is Kenneth Sine, and I’m a product engineer who has been working with humidifiers for over ten years now. In my spare time, I write for, where I share my knowledge with others who want to learn more about the world of humidifiers.