woman pouring hot water in humidifier

Can I Put Hot Water in My Humidifier?

Humidifiers are a well-known household appliance in modern times. The device releases subtle steam into the environment. People like to use humidifiers during dry seasons. The steam from the device can significantly raise the moisture content of the air. So you don’t have to worry about dry skin or blotchy lips anymore.

Humidifiers are easy to use. But with some knowledge about the device, you can get the most out of it. You may be wondering if it’s better to use hot or cold water for the humidifier? What’s the difference when we use warm or even hot water? Today’s article is about using hot water for your humidifier.

Can I Put Hot Water in My Humidifier?

Yes, you can put hot water in your humidifier, but there’s no reason why you should. The answer to that question depends primarily on your personal preferences and the type of humidifier you have. But we definitely have a few things to keep in mind.

Using hot water in your humidifier will only give you a few benefits. If you don’t use a specific type of humidifier, you can use hot water to create a warmer and gentler atmosphere. Hot water has better moisturizing properties compared to cold water. This creates a soothing environment in your home. But that’s the only benefit you can achieve with hot water.

Here are some disadvantages of using hot water in your humidifier.

Increased Risk of An Accident

Putting hot water in your humidifier is the wrong choice if you’ve children in your family or keep pets. Humidifiers are delicate devices. Accidents happen in the most unexpected ways. If you accidentally trip over the humidifier filled with hot water or get too close to it, it can cause serious injuries. Therefore, it’s better to use cold water.

Can Damage the Device

Hot water contains more mineral components than cold water. Because of this high mineral content, humidifiers can quickly become clogged if they’re regularly filled with hot water. This eventually leads to mold and bacteria settling in the device. Thus, the humidifier becomes unusable over time.

Can Be Unhealthy

Inhaling a warm mist can be helpful for cough and cold. But inhaling warm steam without a specific health purpose can lead to side effects. According to experts, the warm mist can cause an unusual swelling of the nasal passages. It’s not advisable to inhale warm steam if you don’t have a cold or your nose is stuffy.

As we can understand, putting hot water into your humidifier has more disadvantages than advantages. Instead of putting hot water in your humidifier, a warm mist humidifier can serve the same purpose. Using cool water in your humidifier is recommended by experts and is suitable for your overall health. Plus, cool water is safe to use around children and pets.

Related reading: Can You Put Cold Water in a Humidifier?

Can You Put Hot Water in A Cool-Mist Humidifier?

Yes, you can put hot water in a cool mist humidifier, but that’s not recommended because it won’t give you the benefits you need.

Cool mist humidifiers are specifically designed to release cold steam into the environment. Therefore, it doesn’t matter what water temperature you put in the device – it’ll always emit cold water vapor. Also, we’ve already talked about the risks associated with hot water in a humidifier. Overall, using hot water in a cool-mist humidifier is not beneficial in any case.

Can You Put Hot Water in A Warm Mist Humidifier?

No, you shouldn’t put hot water in a warm mist humidifier. The purpose of a warm mist humidifier is to release warm steam. The device boils the water itself before it releases moisture. Therefore, hot water in a humidifier emits warm mist has no added benefit. Instead, it may be helpful to use water at room temperature. This way, there’s also no risk of unexpected accidents. It’s recommended to always use a cool-mist humidifier in a house with children and pets.

Related reading: Can You Put Bath Salts in A Humidifier?

Can You Put Warm Water In A Humidifier?

No, you don’t need to put warm water in a humidifier at all. In the case of a humidifier, distilled water and home temperature water should take precedence. Even though warm water can be used, experts always recommend cool or room temperature water. Using cool water ensures safety. It’s also very beneficial to your health.

Do Not Use Boiling Hot Water In A Humidifier

If you’re thinking of pouring boiling water into humidifiers, please don’t do it. The humidifier’s container is made of plastic. It won’t be able to hold its shape with boiling hot water.

The container will deform, and the internal mechanism of the humidifier may be damaged.

Related reading: Do You Put Hot Water or Cold Water in a Humidifier?


So, we don’t advise you to put hot water in your humidifier.

Instead, we recommend adding cool or room temperature water to a warm mist and cool mist humidifier. This way, your home will stay warm and safe at the same time!

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