Humidifier spitting water 10+ best explanations and tips

Troubleshooting Tips for Dealing With Humidifier Spitting Water

What happens when your trusted humidifier, besides producing steam, starts to exhibit a rather annoying behavior – spitting water?

If you’ve found yourself puzzled by this issue, fret not!

In this comprehensive guide, we’ll delve into the various culprits behind this problem and provide you with practical troubleshooting tips to bring your humidifier back to its efficient, water-vapor-dispensing glory.

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Possible causes of humidifier spitting out water

Why is humidifier spitting water? Understanding the possible causes behind this issue can help you swiftly tackle the issue and restore your humidifier.

Instructions on fixing the problem with spitting water

If you find your humidifier spitting out water, it’s crucial to address the issue promptly to restore its optimal performance.

While troubleshooting and identifying the root causes is essential, applying the right fixes can make all the difference in resolving the issue.

Here, we will present you with a step-by-step guide to tackle the issue and get your humidifier properly back to working flawlessly.

Other signs of a damaged or defective humidifier

If you notice significant fluctuations in the humidity output, even after adjusting the settings, it might indicate a malfunctioning of the humidity system or an internal control issue.

Keep an eye out for any unusual smells emanating from your humidifier during operation. A properly functioning humidifier should not emit foul odors.

A blocked mist nozzle can cause the water to overflow and a spitting water issue in the machine.

Identifying these additional signs can be the key to preventing more extensive problems and ensuring your humidifier operates efficiently.

The humidifier makes strange noises

Humidifiers, like any mechanical device, may occasionally communicate through unusual sounds like bubbling or spitting noise.

  • Gurgling sound: Adjust water levels, and clear blockages for smooth vapor flow.
  • Rattling sound: Tighten loose components to restore harmony.
  • Clicking sound: Check the humidistat, control board, and seek expert help.
  • Squeaky sound: Lubricate the fan motor for a smooth performance.

Master this sonic guide, and your warm mist humidifier will hum peacefully once more.

Ways to address the humidifier spitting water issue

By implementing these straightforward solutions, you can regain control over your humidifier’s performance to produce steam comfortably.

Remove extra water

When there’s too much tap water in the reservoir, it can lead to various problems, including distilled water spitting and improper functioning.

Make sure not to exceed the water level when refilling the water tank. Overfilling can lead to water seeping into unintended areas, resulting in disruptive spitting incidents.

Once you’ve removed the excess tap water, wipe the exterior and interior surfaces of the humidifier dry with a soft cloth to prevent any potential spit-water residue from causing further issues.

Add salt correctly

The addition of ”too much salt” practice is particularly relevant when using whole-house humidifiers, which rely on a wicking filter to disperse moisture into the air, one or two pinches adding salt is enough for a vaporizer to create steam.

But just as adding salt can be beneficial, it’s vital to strike the right balance. Adding too much salt can lead to excessive mineral buildup, potentially clogging the filter and reducing the unit’s efficiency.

Carbon electrons connected to theelectricity supply system are essential, and changing the composition of carbon electrons by adding too much salt will affect the functionality of the humidifier.

Adding salt that is specified for humidifiers is an essential tip, and also you can use non-iodized table salt.

Avoid using too much salt, even sea salt, rock salt, or any salt blends, as they may contain impurities that could harm your humidifier or negatively impact the air quality, so it’s essential to add salt correctly to avoid the ”humidifier spitting out water” problem.

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Change the filter regularly

Over time, as the humidifier operates, the filter accumulates various particles, such as dust, mineral deposits, and allergens.

If left unattended for too long, a clogged or dirty filter can hinder the humidifier’s performance, leading to water spitting issues and even causing strain on the device’s internal components located in the electricity supply system.

Filters should be replaced every few months, but this can vary based on the model and frequency of use.

When replacing the filter, always opt for the appropriate filter type recommended by the manufacturer.

Use filtered water, distilled water, or boiling water

Choosing the right type of filtered water for your humidifier is a critical step in maintaining its optimal performance and preventing water spitting issues.

One of the crucial steps in addressing humidifiers is that tap water varies from area to area, and using bad water might be causing the spit-water issue.

Using filtered or bottled water instead of tap water helps eliminate impurities like sediment, chlorine, and other contaminants that might be present in tap water.

Using distilled water instead of tap water, greatly reduces the risk of mineral accumulation in the humidifier’s components, effectively minimizing the chances of water spitting.

Boiling water kills bacteria and removes some impurities, which can help extend the lifespan of your humidifier and keep it running smoothly, as filtered water does.

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Other issues related to humidifiers spitting out water

While we have already explored the possible causes and solutions in the previous sections, it’s essential to delve deeper into additional issues that may contribute to this concern.

Improperly seated water tank

This seemingly minor issue can have a significant impact on the performance of your warm mist humidifier and may result in disruptive water spitting incidents.

When the water tank is not securely placed onto the base or humidifier unit, it can create a small but crucial gap.

As the humidifier operates, water may leak or spray from this gap, leading to the unwanted spitting phenomenon.

To prevent this, always double-check that the water tank is snugly positioned on the humidifier base.

The incoming water pressure is too high

When the water pressure is too high, it puts undue stress on the internal components of your humidifier and affects to produce steam comfortably, leading to unwanted outcomes like sputtering or spitting water.

The excess pressure can overwhelm the system, causing it to dispense water unevenly and disrupt the balance of humidity output.

When the power exceeds the need for dispersing mist, it will start to spit out water directly, in that case, you need to install a water pressure regulator in your plumbing system.

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A buildup of mineral deposits

When water is evaporated in the humidifier, minerals and impurities naturally present in the water source are left behind.

Over time, these too many minerals accumulate and form stubborn deposits on various components of the humidifier, such as the water tank, heating elements, or misting nozzle.

As the deposits grow, they can obstruct proper water flow, disrupt the even distribution of mist, and lead to unwanted spitting incidents.

Dirty or clogged filter

When the filter becomes clogged, it hampers the humidifier’s ability to produce mist, leading to water droplets being expelled instead.

Keeping the filter clean and free from debris not only resolves the issue of water spitting but also ensures that your humidifier operates efficiently.

Blocked evaporator pad

When the evaporator pad or water line becomes clogged, the excess water may not evaporate as intended.

Consequently, the accumulated moisture can build up and find its way to produce mist in the dispersion system, leading to disruptive water spitting.

By incorporating simple yet consistent cleaning routines into your humidifier’s care, you can prevent the accumulation of debris and mineral deposits on the water line.

Drain excess water

To tackle this concern effectively, it is essential to be familiar with your humidifier’s design and drainage mechanisms.

Many modern whole-house humidifiers are equipped with convenient drain plugs or valves to facilitate easy water removal.

Begin by locating the drain plug or valve, typically found near the base or bottom of the humidifier.

Gently loosen or open it, allowing accumulated water to flow out into a suitable container or directly into a sink.

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Still got questions like: “Why is my humidifier spitting water”? We have more answers for you below.

Why is my vapor humidifier spitting out water?

The most common culprits include excessive water in the reservoir, high incoming water pressure, mineral deposits buildup, or a clogged filter.

Why is my humidifier leaving condensation?

The primary reason behind humidifier condensation is the stark difference in temperature between the warm mist expelled by the humidifier and the cooler air in the surrounding environment.

Is it ok for water to sit in humidifier?

Allowing water to sit in a humidifier for an extended period is generally not recommended. Stagnant water can become a breeding ground for bacteria, mold, and other microorganisms, which may pose health risks when released into the dry air.


When encountering the frustrating issue of a humidifier spitting out water, it is essential to identify the root cause promptly.

Excessive water, high incoming water pressure, heating elements or mineral deposits, and adding salt too much can be common culprits.

By implementing simple preventive measures, such as using filtered, bottled water even distilled water, and maintaining a clean and unclogged filter.

Regularly inspecting and addressing any issues with the humidifier can help ensure its optimal performance and longevity.

Read also:

? How to Prevent Mold In Humidifier

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