This may reduce the risks of infection, inflammation,nosebleeds, and nasal congestion.
The instructions typically say you should usedistilled waterin the humidifier, but people often wonder about other options.
This article explains why you should use distilled water in your CPAP machine.
Illustration by Brianna Gilmartin for Verywell Health
Illustration by Brianna Gilmartin for Verywell Health
Can You Use Tap Water With a CPAP Humidifier?
Minerals like calcium, magnesium, and iron are what make your tap water “hard.”
Filtering can remove some of the minerals.
It may not remove microbes or other chemicals, though.
Boiling will remove the germs, but then it doesn’t remove minerals or chemical contaminants.
Distilled water prevents mineral deposits, and most manufacturers recommend its use.
It’s fine to occasionally use tap water toclean your CPAP machine.
Most manufacturers recommend using distilled water in a CPAP humidifier.
This extends the life of the water tub.
Still, you will need to replace the water tub on a routine basis.
What About Other Types of Bottled Water?
You’ll want to check with the company or your healthcare provider if you have questions.
The health risks also are a good reason to clean your CPAP machine regularly.
When cleaning your humidifier, don’t use:
These substances could damage your lungs.
Very few people report problems with check-in or other factors, although some required documentation.
Water is just one concern for CPAP users when traveling, and researchers offer some tips.
One study described:
Consider local water safety as well.
What if Distilled Water Isnt Available?
With CPAP and distilled water, there are a few options if you don’t have access.
But first check grocery stores, or even specialty or hardware stores.
Make Your Own
Distilled water is boiled water that is collected after it becomes steam.
With the lid placed upside down, the steam will collect in the smaller second pot.
Placing ice in the lid will help the steam condensation process to go faster.
Keep in mind that distilling water removes all impurities for CPAP use but it isn’t ideal for cooking.
While it does remove germs and some experts find it safe, it’s not ideal.
You shouldn’t used boiled water for more than a day or two until you might access distilled water.
The machine will continue to work and will simply use dry air.
Just remember to turn off the humidifier unit.
The airway tissues in your nose and mouth may become extremely dry, though.
The dry air can increase the risk of infection and inflammation.
An over-the-counter nasal saline spray can help with symptoms until you might return to using humidified air.
Summary
Using the humidifier in your CPAP machine can help prevent problems in your nose and sinuses.
It may also contain dangerous microbes and chemicals.
Avoid adding things like perfumes or scented oils to your humidifier water.
Avoid harsh cleaning agents when cleaning your rig.
Plan ahead when traveling and avoid using tap water in areas with poor water quality.
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