6 Best Filterless Humidifiers

Everlasting Comfort Ultrasonic Cool Mist Humidifier


As technology advances, various manufacturers are inventing devices to make our lives easier. One such device is the filterless humidifier, which not only helps to increase the humidity in a building, but also has a very noticeable benefit. While traditional humidifiers can offer many benefits to your home and health, they require constant maintenance to keep them in top condition, which is quite tricky, as you have to clean the filter regularly and buy replacement filters at regular intervals. With the best filterless humidifier, however, you can avoid the stress that usually comes with traditional humidifiers.

For many years, many people were reluctant to buy a humidifier because of the ongoing cost of replacing filters. Fortunately, the invention of filterless humidifiers is now helping to attract more people to the device. If you are looking for the perfect filterless humidifier for your home, this guide is for you. We’ve compiled a list of the six best filterless humidifiers on the market today. In making our selection, we’ve taken into account a few key criteria such as mist type, tank capacity, coverage area and noise level.

As we have already mentioned, this article has been entirely designed to guide you in your search for the ideal filterless humidifier. To help you with your buying decision, we’ve included a well-designed chart, full reviews of our top six filterless humidifiers and a buying guide with lots of practical advice. In addition to these tips, we’ve also included a section where you’ll find answers to several questions that buyers typically face.

The 6 best filterless humidifiers

Everlasting Comfort Ultrasonic Cool Mist Humidifier

If you are looking for a device that can cover a 400 square foot area but don’t want to part with an exorbitant amount of money, then you need to take a look at the Everlasting Comfort ultrasonic humidifier. This unit has a six litre capacity water tank and an essential oil sprayer, which allows for aromatherapy for stress-free, long-lasting winters. In addition, the water tank is capable of lasting up to 50 hours continuously, depending on the setting and flow rate of the device.

Although the setting of the unit depends mainly on the user’s customisation, it will ensure that your room stays around the normal humidity level. The unit has a 360 degree nozzle and a fully adjustable and functional knob to control the humidity level. The unit also prevents the growth of mould and bacteria, although it is filterless.

This unit has several great features, but that doesn’t mean it doesn’t have some flaws. There are some moving parts and tight spaces that can make cleaning difficult for you. Also, there are reports that leaks are common with this model. Therefore, we recommend that you place it in a place where a leak would not be detrimental.

Everlasting Comfort Ultrasonic Cool Mist Humidifier
  • cool
  • 6 L.
  • up to 50 hours
  • up to 400 square feet.
  • not specified
  • 2-year limited warranty; free lifetime replacement.


Levoit LV600HH

Made by a well-known company with a fairly good reputation, the Levoit LV600HH Ultrasonic is a brilliant device. As well as offering hot and cold mist in three different levels, this unit also has a humidity sensor, which allows you to set your exact humidity level and the humidifier will maintain it automatically. Remote control and an easy-to-use touch screen are common attributes of the best humidifiers, and this model lacks neither.

With a large six litre tank capacity, this model can run for 36 hours continuously and is capable of covering an area of 753 square feet. The machine is very quiet and is designed to prevent leaks. If you are interested in aromatherapy, you can add a few drops of your favourite essential oil to the aroma box, as the unit can also be turned into an aroma diffuser. However, bear in mind that this option may not be ideal for a baby.

best filterless humidifiers

This machine is clean, high quality and robust. It has a transparent reservoir so you can see how much water is left. However, the display on the machine, despite being useful, is too bright for night time use and there is no button to adjust it.

Levoit LV600HH
  • Mist type
  • cold and hot
  • 6 L.
  • up to 36 hours
  • not specified


MistAire Silver Ultrasonic Cool Mist Humidifier

The MistAire ultrasonic mist humidifier is a great option for people with dry skin. Although the design is relatively simple, the device has a decent capacity to humidify the air for 25 hours. Although the 1.5 litre water capacity seems small, in fact it is not, and you can use it continuously without needing to refill it from time to time. In addition, the device is quiet, so you can sleep peacefully at night without being disturbed by the humidifier.

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In addition, this MistAir unit serves an area of up to 250 square feet, making it suitable for master bedrooms and large living rooms. If you are looking for a simple and uncomplicated unit, then this MistAire could be a great option for you. It comes with a five-year limited warranty, which speaks volumes about its durability. A cleaning brush is also included to prevent any mould build-up, which is common with filterless humidifiers.

best filterless humidifiers

Although this model doesn’t have many bells and whistles, it does have a nightlight, making it a great addition to any child’s room, especially during flu and cold season. In addition, it has two humidity settings to suit your needs. It also has an auto shut-off feature, which means you can plug it in for the night without having to worry as the machine automatically shuts off when the water dries up. In addition, this allows you to stay safe without having to worry about accidents or overheating.

  • cool
  • 5 L.
  • up to 25 hours (at low speed)
  • up to 250 square feet.
  • 32 dBA
  • Limited to 5 years
  • 360 degree nozzle; automatic shut-off; cleaning brush included


KLARSTEIN humidifier

The KLARSTEIN humidifier is a great option for people who want firm control over humidity levels. In addition to being a great option for whole house hydration, another reason we love it is that it comes with a built-in humidity controller. You can effortlessly determine the humidity level in your home and adjust the unit’s settings accordingly. This model, in addition to being our editor’s choice, is also widely regarded as the best filterless humidifier for babies.

The unit has a three-litre tank capacity, allowing it to run for up to 26 hours before needing to be refilled. It has three different mist settings to suit your comfort level, and the included dual rotating nozzle helps disperse the mist. Surprisingly, this unit is capable of covering an area of 300 to 500 square feet, which is the size of an average flat. It also has an auto shut-off feature that prevents overheating by automatically shutting off the machine when the water is dry. In addition to this, there is a night mode function that allows the unit to operate without causing extreme light and sound for a peaceful sleep.

best filterless humidifiers

The KLARSTEIN humidifier also has a very stylish design, making it a perfect option for interior design. In addition, it has a digital LED display, making it an easy-to-use and enjoyable vaporizer. The humidifier operates at a very low noise level, which is perfect for households with children. The automatic waterless shut-off function, meanwhile, improves the durability and safety of the machine. However, the unit has a very annoying sound that beeps continuously when the water runs out.

  • cool
  • 6 L
  • Coverage area
  • not specified
  • timer mode; sleep mode; LED display


Anypro ultrasonic cool mist humidifier

Voted as one of the best filterless humidifiers on the market, the Anypro Ultrasonic Cool Mist humidifier has several useful features. Firstly, it is made from high quality anti-mould materials, giving it several health benefits that you won’t find on many other models. Thanks to its compact yet large 2-litre water tank, the device can run continuously for up to 16 hours. In addition, it has a 360 degree rotating misting device that allows you to control the dispersion of the mist. The steady flow of mist provided by this unit leaves no condensation and is suitable for medium to large rooms.

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The Anypro humidifier is made in the USA, and its durable construction reduces the likelihood of breakage or leakage. For people who want to leave the machine running all night, the Anypro Mist humidifier offers peace of mind as it is safe and super quiet. The built-in automatic shut-off function comes into play when the machine runs out of water, reducing the risk of overheating or accidents.

The materials used in the manufacture of the machine help to kill mould growth. This unit is not equipped with a filter, but it does come with a cleaning brush for easy cleaning. Although this model is equipped with all the key features you would expect to find in a top quality device, it is not an aromatherapy diffuser. So if that’s what you’re looking for, you may need to reconsider your options.

Anypro ultrasonic cool mist humidifier
  • What we liked:
  • What could be better:
  • cool
  • 2 L.
  • up to 16 hours
  • up to 360 square feet.
  • 36 dB max.
  • Limited to 1 year
  • 1/3/6 hour timer; optional night ligh

GRUNDIG Humidifier

No list of the best humidifiers is complete without the GRUNDIG humidifier. It is perfect for people with different types of respiratory problems, such as sinus congestion. With a five-litre tank, it is capable of holding enough water for uninterrupted operation. It also has a 360-degree adjustable rotating nozzle, which allows you to control the direction of the mist for an even dispersion. In addition, the unit can serve you while placed at any angle thanks to the rotating nozzle.

In addition, the humidifier has an automatic shut-off function that turns it off automatically when the water dries up. This prevents the humidifier from overheating its sensitive components. Other key features include a built-in LED night light and mist control. These allow you to control the amount of mist the machine dispenses. In addition, it is equipped with ultrasonic technology, which makes it run quietly.

best filterless humidifiers

However, nothing is ever perfect, and this device also has its drawbacks. One of these drawbacks is that its very bright light has no shut-off mode, making it uncomfortable for people who cannot sleep in the light. In addition, it needs to be cleaned regularly if you don’t want to risk the growth of mould and bacteria.

GRUNDIG Humidifier
  • cool
  • 4.3 L.
  • up to 12 hours
  • not specified
  • not specified
  • built-in soft glow LED night light; automatic shut-off when water tank is empty


What are the advantages of filterless models?

Humidifiers without filters offer many advantages. In addition to the usual functions of conventional humidifiers, filterless humidifiers offer a number of additional benefits.

Less noise: Filterless humidifiers are generally fanless, which means that they run very quietly. Conventional humidifiers, on the other hand, produce a lot of noise and can therefore disturb the whole family.

Lower costs: Of course, filterless humidifiers do not have filters, which means lower maintenance costs because you do not need to buy filters from time to time. Filters require careful maintenance and must be replaced frequently. By purchasing a filterless humidifier, you avoid these additional expenses.

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The health factor: The overall health of your family can only improve when you install filterless humidifiers in your home. These units are equipped with antibacterial materials that prevent all kinds of bacteria from growing. In addition, they will give your skin a healthy glow, which is due to breathing moisturised air.

Features to consider when choosing a humidifier
Today, most manufacturers produce models without filters due to their increasing demand. As a result, the market has been saturated with many models of these humidifiers, making it difficult for buyers to choose the right model. To be sure to buy the best model, there are some key features to consider.

Type of mist
There are essentially two categories of humidifiers: cool-mist and warm-mist humidifiers. Although both cool-mist and warm-mist humidifiers are designed to purify the atmosphere and increase the humidity level of a space, they operate differently. Hot steam models are designed to produce hot steam from heated water, while cool steam models release cold, unheated water into the atmosphere. You should be able to determine which type is best for you based on your needs. Hot mist is considered to be slightly more antibacterial because of the preheating process that kills harmful bacteria. As these units do not have a filter, hot steam models may be useful in homes with babies and small children.

Water tank capacity
This factor should always be considered when buying a humidifier. The effectiveness of the unit in humidifying your home depends on its capacity. You should also know the size of the room where the unit will be used before making your decision.

However, it is recommended that you choose a model with a large water tank, such as the Levoit LV600HH, as this will allow it to run for longer hours. This way, it will disperse adequately to keep the air moist. Also, avoid buying a large model with a misting capacity greater than the size of your room. Excessive humidity can accelerate the growth of bacteria, mould and other harmful effects.

The humidistat is an essential part of the humidifier because it prevents the humidity level from exceeding a certain threshold. Make sure you choose a humidifier with a humidistat, as units without one are capable of producing extreme amounts of humidity, which is also bad for your health.

Coverage area
Humidifiers are generally designed to cover a particular area. Smaller models are intended for office use, while larger ones are capable of humidifying an entire house. Bedroom humidifiers fall somewhere in between. Excessive humidification can cause mould, so don’t overdo it. To avoid this, choose the right model for your needs, depending on the size of the area you want to humidify.

Noise level
All humidifiers make some noise, regardless of model or type. If you are using a humidifier for the bedroom, it should be as quiet as possible so as not to disturb your sleep. In general, the larger the unfiltered humidifier, the louder it is. In an ideal world, your humidifier works as a kind of white noise.

These days, it’s almost embarrassing to buy something that doesn’t come with a warranty. How will you measure the long-term durability of a product that doesn’t come with a manufacturer’s warranty? While a warranty doesn’t totally mean that a product will last for many years, it does show the level of confidence that the manufacturer has in it, which is a good initial sign.

Additional features
The more features a humidifier has, the more effective it will be. A model with a mist control will allow you to change the amount of moisture it releases into the atmosphere. This will prevent your home from becoming too humid, which could have adverse effects.

Another great feature is the automatic shut-off function and timer settings. The auto shut-off allows you to control how long the unit runs before it shuts off. Also, you don’t have to worry about the water drying out as you can turn the unit off automatically as soon as the water dries out. Other features you might want to check out are an oil diffusion function and a remote control, which also offer more convenience.

Our verdict
All things considered, the best product on this list is the Everlasting Comfort Ultrasonic Cool Mist Humidifier, which has won the hearts of many homeowners thanks to its large water tank capacity, longer running time and, most importantly, its aromatherapy treatment capability.

The Levoit LV600HH is our second choice, also with a wide range of features. Like the Everlasting Comfort, this one also offers aromatherapy treatment, with a warm mist mode and a large coverage area of up to 753 square feet.

Third place goes to the Pure Enrichment MistAire humidifier, which has a sleek and elegant design, a 360-degree rotating nozzle and can run for up to 25 hours on a single charge.

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