What kind of water for humidifier is best?

A humidifier can be a great way to regulate the humidity in your home. But what is the best kind of water for your humidifier?

The best type of water for your humidifier is distilled water. It removes all the minerals and potential mold spores in the water resulting in a clean mist.

If you’re wondering about bottled water or even how to distill your water, you can find that all below.

Let’s get started.

What Type of Water Should I Use in a Humidifier?

Distilled water is the best water to use in a dehumidifier.

Distilled water is made by heating water that turns into vapor and then condenses back into the water, leaving behind the mineral residue.

The leftover liquid is what’s known as distilled water.

It’s imperative that you do NOT use tap water in a humidifier or it may lead to mineral deposits in your humidifier’s tank.

It can even lead to health problems as tap water in a humidifier can lead to mold growth inside, resulting in mold getting into your lungs.

Can You Put Tap Water in a Humidifier?

You cannot put tap water, soft or hard water, into a humidifier, even if it’s safe to drink.

Tap water contains mineral deposits that can promote mold and bacteria growth within your humidifier.

If you do use tap water, you may find that white dust ends up being spread around your room once the mist in your room dries.

This “white dust” is akin to dust and can trigger allergies in prone people.

If you must use tap water, make sure to distill it first, otherwise, you may find white dust everywhere in your home.

Purified water can still contain minerals, so it’s best not to use filtered water that you’ve made yourself with something like a Brita filter.

The dissolved minerals will cause humidifier dust and an unpleasant environment.

Can You Use Distilled Water in a Humidifier?

Distilled water is the best type of water to use in a humidifier. You won’t need to clean your humidifier, you won’t have any white dust around your home and your home will smell better as well.

Can you use bottled water in a humidifier?

Bottled water or “Spring water” is not the same as distilled water.

It can still contain minerals which will result in white dust if you’re using an ultrasonic humidifier.

You’ll find that you’ll have limescale build-up over time, which will make for all the water in your humidifier to become tainted.

Can you use boiled water in a humidifier?

Boiled water is not ideal for humidifiers.

Just like tap water, it will still contain all the minerals that you are trying to avoid putting into your humidifier.

While boiling water is a great way to kill off any bacteria or mold spores in your water, it will increase the number of minerals in the water.

As some of the distilled water is turned into water vapor during the boiling process leaving the minerals inside the boiled water.

Is boiled water the same as distilled water?

Boiled water is not the same as distilled water, it is simply water that has been boiled into reaching the boiling point.

Distilling water is an entirely different process to remove the minerals within.

3 Ways to Make Distilled Water for a Humidifier

1. Glass bowl method

Step 1. Fill a stainless steel pot halfway with tap water

Step 2. Place a glass bowl on top of the water. The goal is to make sure it floats and doesn’t touch the bottom of the pot.

If you have a wire mesh rack that fits in your pot, that will do the trick.

Step 3. Boil the water in the pot

Step 4. Flip the lid of your stainless steel pot and then use it as an inverted lid and fill it with ice cubes.

What you’re doing here is creating a condensation effect.

You can turn down the heat to low as well during this process.

Step 5. Continue boiling water and let the steam rise and condense on the lid. The resulting condensation will fall back into the bowl.

Continue this process until you’ve collected enough water for your humidifier.

Step 6. Remove the bowl but make sure you’re careful and don’t get burned. You can use gloves if you have them.

2. Glass bottle distilling method

Step 1. Get 2 glass bottles, it’s best if you have one bottle that curves out from the neck so the distilled water stays within the bottle.

Step 2. Fill the normal bottle with tap water but make sure that you leave at least five inches from the top.

Step 3. Tape together the glass bottles

Step 4. Boil water in a stainless steel pot and fully submerge the glass bottle filled with tap water. The bottle with the curved neck should be hanging out of the pot.

Step 5. Angle the bottle at an angle and find some way to lean the bottle against the rim of the pot

Step 6. Put ice (in a pack) on top of the glass bottle that’s outside of the boiling water

Step 7. Continue the process until you’re satisfied with the mineral free water you’ve collected

3. Turn rainwater into drinking water

NOTE: While this can remove minerals from the rainwater, it does NOT get rid of any pollutants, mold spores, or bacteria. Do take the necessary precautions like boiling the leftover water to ensure it’s ok to use in a humidifier.

Step 1. Leave a large pot or container outdoors to collect rain

Step 2. Leave the water outside for 2 days so the minerals can disperse

Step 3. Take out the leftover water

What Can I Use if I Don’t Have Distilled Water for my Humidifier?

While it is unfortunate, it’s better to not use a humidifier unless you have distilled water available.

You do not want to deal with humidifier dust and potential health risks.

Also, you may damage your humidifier long-term if you decide to use any water that isn’t treated.

Final Thoughts

It may seem like you can simply put tap water or filtered water into a humidifier, but that isn’t the case.

Make sure that you use distilled water to ensure you don’t deal with a build-up of limescale, black mold, humidifier dust, or even health risks.

If you want to increase the humidity in your home, you can check out our guide.

About Roy Cohen

Roy Cohen has a burning passion for heating, cooling, and ventilation. He aims to help you save money on expensive repairs and bring you the best HVAC products. He has years of experience behind him in HVAC repair and garage maintenance.

You can find Roy at his LinkedIn or his email: [email protected]

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