How To Demineralize Tap Water For Humidifiers (Top Methods)

  • By: madison
  • Date: December 2, 2022
  • Time to read: 5 min.

The best way to demineralize water for a humidifier is to use a home water filtration system. This will remove any impurities from the water and make it safe to use in your humidifier.

Don’t want to spend money on a filtration system? Keep reading to discover how you can demineralize water for your humidifier without one.

Key Takeaway’s

  • You need to understand demineralization and why you might want to do it.
  • Gather your supplies. You will need a reverse osmosis filter, a deionization filter, and a distiller.
  • Install the filters in your tap water line.
  • Run the water through the filters and into the distiller.
  • Enjoy your clean, demineralized water.
A water demineralizing unit
How To Demineralize Tap Water For Humidifiers

Here’s The Answer To How To Demineralize Tap Water For Humidifier

You can demineralize water in a few different ways, but one of the most effective methods is to use a reverse osmosis filter.

This filter uses pressure to force water molecules through a semipermeable membrane, which traps the minerals and impurities on one side of the membrane while allowing the clean water to pass through to the other. 

Reverse osmosis filters can be purchased online or at many home improvement stores, and they are relatively easy to install.

Once you have installed your reverse osmosis filter, simply run the tap water through it before adding it to your humidifier. You should notice a difference in the quality of the humidifier’s output and its efficiency.

Fill A Pot With One Gallon Of Water And Set It On The Stove To Boil

Filling a gallon plastic bottle with water.
Fill A Pot With One Gallon Of Water And Set It On The Stove To Boil

Boiling water is not the most efficient way to demineralize water for a humidifier. Instead, you should use a reverse osmosis filter or carbon filter.

This will allow you to achieve the same results with significantly less energy and resources.

To make a pot of boiling water effective for humidifying the air, you will need to fill it one gallon at a time.

Place the filled pot on the stove and turn up the heat to medium-high. Allow the water to boil until it reaches 205 degrees Fahrenheit.

Remove The Pot From The Heat And Pour In One Cup Of White Vinegar

Well, this is a technique that you can use to demineralize water for your humidifier. This process is safe and will not damage your humidifier.

Demineralization is a technique you can use to soften water for your humidifier. Doing so will help prevent damage to your humidifier and improve its performance.

After following this process, you can use distilled, deionized, or reverse osmosis-filtered water in your humidifier.

If you are using unpurified water, it is important to note that this process will not work either. Additionally, if your humidifier has an electronic filter, replace it after following this process.

Stir The Water And Vinegar Mixture Thoroughly, Then Let It Sit For Minutes

After stirring the vinegar and water mixture thoroughly, it is important to let it sit for a few minutes. This will allow the vinegar to do its work and demineralize the water.

After waiting a few minutes, you can use this demineralized water in your humidifier. Simply fill the humidifier with purified water and turn it on as usual.

Pour The Mixture Into Your Humidifier’s Reservoir And Let It Run Until The Tank Is Empty

After mixing the vinegar and water mixture, pouring it into the humidifier’s reservoir is important. This will help to humidify the air in your home.

Once pouring has finished, it is important to let the tank run until it is empty. Otherwise, you risk over-humidifying your home.

Repeat This Process Once A Week To Keep Your Humidifier Clean And Free Of Minerals

After following this process, you can keep your humidifier clean and free of minerals. This will help to improve its performance and prevent damage.

Moreover, it will also help to prevent odors and unhealthy air conditions.

What Are The Benefits Of Using Demineralized Water In A Humidifier?

A person demineralizing tap water
What Are The Benefits Of Using Demineralized Water In A Humidifier

You’re probably familiar with the benefits of using demineralized water in your humidifier. If you aren’t:

  • Mineral deposits can build up in the humidifier and clog it, causing it to stop working properly.
  • White dust can form on furniture and clothing if tap water is used for a long period.
  • Impurities such as iron and manganese can enter your home during heating, leading to discoloration of surfaces, clothes, furniture, etc.
  • The longevity of your product will be reduced significantly because minerals can cause corrosion on metal parts essential for functionality.

How Can You Demineralize Water At Home?

There are several ways to demineralize tap water at home. You can use a reverse osmosis filter to remove minerals from water. It does this by running the water through filters with tiny pores only large enough for minerals to pass through.

The pores are too small for bacteria and other contaminants to pass through, so they’re left behind in the filter while the rest of the water goes on its merry way.

A carbon filter is another option for removing unwanted minerals from your tap water. Unlike reverse osmosis filters, carbon filters don’t remove all of your minerals—they just reduce them greatly (by about 95%).

What Are Some Of The Best Ways To Filter Tap Water For Use In A Humidifier?

Reverse osmosis is the ideal method for filtering tap water. This filter will remove any unwanted minerals and chemicals from your tap water.

A carbon filter can also be useful for removing some of the contaminants in your water, but it’s not as effective as a reverse osmosis system.

Distilled water is another good choice because no impurities are left behind after distillation; however, this requires more time and money than filtering with a reverse osmosis system.


Hopefully, this article has given you the information and inspiration to demineralize your tap water easily and effectively.

Whether you use a demineralization cartridge or boil your water for half an hour before using it, the benefits of using clean tap water in a humidifier are clear: You’ll breathe easier and enjoy cleaner air, all while saving money on expensive filters.

Whichever method you choose, follow the instructions carefully to avoid damaging your humidifier.


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.