Do You Put Hot or Cold Water in Humidifier?

Here's a common question that has been asked at least a couple of times by our readers. Should you put hot or cold water in a humidifier especially during the winter season? Well, the vote is definitely for cold water and for many good reasons. We are going to touch on all with an explanation in every scenario. Hopefully, this will clear out any misconception on the "hot and cold" topic.
Short answer


Cold Water is Safer for Baby, Children, and Pets

Accidents can happen and small little actions will change one’s life. The reason we don’t encourage hot water over cold as it may cause burn to your little one. When your kids or pet running around the house, they might unintentionally knock over the humidifier. This would cause the hot water from the reservoir to spill out and lead to a first-degree burn. There is also the risk that the toddler’s fiddling hands might touch on the hot steam in the warm-mist humidifier. The burn and the pain will be traumatizing for them and we don’t want that from every happening.

What Kind of Water Do You Put In a Cool Mist Humidifier?

Instead of debating whether to put in a hot water or cold water in a humidifier, you should focus on using clean, purified water. There are millions of mineral deposits in water consisting of mold and bacteria. They are harmful to our health and can become a danger when it is released into the air. To reduce the risk of inhaling these microorganisms, use only distilled or demineralized water.

Unlike Katy Perry hot and cold songs, the expectation you are going to get with a humidifier is pretty consistent. It is a simple appliance designed to increase the room humidity level through moisture dispersion. There are 3 major types of humidifiers in the market: Evaporative, Ultrasonic, Steam vaporizer. Generally, we will group them to either a cool-mist or warm-mist humidifier. Even though a cool-mist will only emit cool air while a warm-mist will release hot air, you should use room temperature water on both devices.

Cold Water Equals Better Breathability

As stated by the FDA, cold mist is much more refreshing and breathable than a warm mist humidifier. It is no secret that cold water vapor is much easier to breathe in and will reduce allergies at a greater distance. It is also better at easing the nasal passage from swelling and mucus blockage. Perfect if you have trouble sleeping at night due to breathing difficulty.

Cold Water Can Preserve The Longevity of The Humidifier

Not all humidifiers are created equal particularly the cheap ones. By constantly placing hot water into the bucket, the high heat will cause the inner parts like filter, coil to wear out quickly. This would impact the durability of the humidifier and can be costly to fix or replace it.


Max Fernandez

A humidifier distributor with more than 11 years of experience in the field, Max Fernandez is no stranger to the moisture-capturing machine. You can catch him here reviewing humidifiers and preaching on the importance of perfect humidity.