We have searched the market and composed this list with best rated cool mist humidifiers without filters, devices without ongoing costs, suitable for homes where water is filtered already or for those who plan to use distilled water.
Why would you need a filter at all?
Filters are not necessarily a bad thing, they are in humidifiers to keep the water and vapor clean. They are designed to collects particles that can lead to bacteria and mold growth inside the device. This holds in particular for the cool mist humidifiers.
But if you filter the water at the home level, you do not need an extra filter in the humidifier, and the same holds if you plan to use distilled water.
Having a filterless humidifier means you need to take extra care and to clean the device a bit more frequently. But as you can imagine, the ongoing cost of replacing filters is a good reason to consider buying a humidifier without a filter, or to go for a device that has it permanently integrated.
Therefore, the term filterless used here implies that these devices do not require any extra investment to replace filters. In other words, they are either without any filter or they can have a permanent stainless steel or ceramic part that acts as a filter. So just to know this and to avoid any confusion, this is clearly indicated for each of the humidifiers in the list below.
But if you have issues with respiratory organs and do not use a water filter system at home, then it is better to consider devices with filters.
My list of cool mist humidifiers without filters
The devices in the list below are ordered by the water tank volume from smaller to larger. This is very close to the ordering by weight, or ordering by size, or by overall portability.
So before choosing one, make sure you know the size of the space where you are going to use the humidifier. There are differences in prices and you can save money if a small device is what you need.
Pure Enrichment MistAire Ultrasonic Cool Mist Humidifier
Pure Enrichment MistAire Ultrasonic Cool Mist Humidifier is a quiet ultrasonic type premium humidifying tool with a 1.5-liter water tank for up to 16 hours run, with automatic shut-off and night light functions.
This ultrasonic cool mist technology implies that there are no heaters here, and this is also a system that operates without filters. You have high and low speed settings, and the mentioned run time is for the high run. It has a convenient 360-degree mist nozzle so you can direct the mist flow away from things in the room like electronics, pets, plants, etc. This humidifier provides 150 ml/hour moisture output, and this should be good enough for up to 250 square feet (23 m²) rooms.
The gadget is equipped with a soothing glow for maximum relaxation, and the mentioned automatic shut off means that it switches off by itself if the water level is low or if you have removed its water tank.
The package included the humidifier, AC power adapter, user manual, and disk cleaning brush. It comes with an impressive 5 Year Warranty, and the manufacturer claims that they have a 7-days a week customer support.
Magictec Cool Mist Humidifier
This Magictec Cool Mist Humidifier is based on a very quiet ultrasonic technology, and with its 2.5L water tank, it can provide up to 24 hours of humidified air in any medium-sized room.
This humidifier comes with a convenient 360° nozzle spray so that you can adjust mist output direction to avoid various electronic items in the room, and to have it more where it is needed.
As mentioned above, this is a quiet system with less than 30 dB, and it has an automatic power-off function so it is safe when the water tank is empty. It is best suited for bedrooms, living rooms, nursery homes, and for offices.
The material is a durable ABS for long-lasting usability, and the gadget is designed so that you can use it on any tabletop. It is worth mentioning that this is a filterless design so there are no extra expenses related to changing filters. As fas as I know, this humidifier is not designed for essential oils.
GENIANI Top Fill Cool Mist Humidifier
This GENIANI Top Fill Cool Mist Humidifiers for Bedroom & Essential Oil Diffuser is a medium-size 2-in-1 filterless item with ultrasound technology and a great price. They describe it as the most innovative humidifier on the market today, no doubt they exaggerate a bit but this is indeed a very elegant and effective design.
You have a 4-liters water tank so this is medium size, and they claim this is enough for 24 hours non-stop running. The phrase 2-in-1 means that you have an additional tray for essential oil, so this is both humidifier and diffuser. It comes with a smart technology that includes a built-in sensor that will keep the humidity automatically on the level you choose. So this is indeed something you will not find in many gadgets of this type on the market.
Refilling can hardly be easier, and the pictures below show this. You can remove the lid if you want, but you can refill it even without removing it, there is a small insert at the top of the unit. There is also a transparent water gauge on the side and you will easily know or be able to estimate how much time is left to the next refill. But you will remove the lid when you want to clean this unit.
They claim that antimicrobial technology is used to suppress mold growth. According to their specifications, this product is ETL Certified so it conforms to US safety standards and this is supported by Intertek certification.
Note also that this is a filter-free design, so no money spending on filters and no extra time on replacing them. You have a LED Night Light with a turn off option, and it comes also with an auto shut-off feature, so no worry if the water tank becomes empty.
Who is it for
Being based on ultrasound technology it is very quiet and suitable for bedrooms. No doubt this unit is suitable for bedrooms, its noise level is only 38 dB, it can be used in baby rooms as well. This is also a perfect and practical gift for anybody, something that will not remain unused.
This humidifier has an output of 250-300 ml of mist per hour, it moisturizes the air quickly and quietly, and its capacity is good enough for a room of up to 220 ft² (20 m²).
- Capacity: 4 liters.
- Cable length: 5 ft (152 cm).
- Space cover: up to 220 ft² (20 m²).
- Package dimensions: 12.4 x 9.2 x 6.7 in (36 x 23 x 17 cm).
- Weight: 4 lb (1.8 kg).
They offer a 2-year warranty with this product, and I am quite impressed with their customer support. See one example I noticed on Amazon with a dissatisfied customer and how they reacted:
Please see a bit more in this short video:
Homasy 4.5L Cool Mist Humidifiers
Homasy 4.5L Cool Mist Humidifiers are essential oil compatible ultrasonic type ultra-quiet gadgets for home use, with a mid-size water tank, auto shut-off feature and lots more.
They come in several different colors and this is behind the plural ‘humidifiers’ used in the title. The mentioned 4.5 liters water tank is good enough for a room of up to 538 square feet (50 m²) and with the output of 280 ml/h, this will work for max 30 hours in low mist setup.
You might want to know that these Homasy ultrasonic humidifiers are very quiet as they run at 28 dB. This is what makes them perfect for bedrooms and baby rooms.
This humidifier is also essential oil compatible, and this is not so with many other models on the market. There is an extra aroma nozzle for this purpose and essential oil can be added using a dropper. So you have the tool that works also as an oil diffuser.
It is also very easy to use top-fill design, you add the water directly when you raise the lid and you have a large opening. There is a water indicator window on the side. If it runs out of water, it will automatically shut-off and go into standby mode.
There is an adjustable mist control button so you have full control if how much mist you have in the air. They suggest keeping the humidity in the range 40-60% to have a perfect environment if you have breathing issues.
Please see more in this short video:
TaoTronics TT-AH018 Warm and Cool Mist Humidifier
This TaoTronics TT-AH018 Warm and Cool Mist Humidifier is a filter-free device with a 5.5-liter tank. This is a versatile device with both warm and cool mist, and this is why I have included it also in my list of warm mist humidifiers.
This humidifier has 3 warm mist temperatures and 3 output levels. It can run up to 45 hours on one full tank.
The technology is ultrasonic, you have a memory function, and also smart humidity control. Please follow the link for more.
Everlasting Comfort Humidifiers for Bedroom
This 6L Everlasting Comfort Humidifiers for bedroom is one of the cool mist type humidifiers with a 6-liter tank and ultrasonic technology, very quiet and it works on near-silent frequencies. This is what makes them suitable for bedrooms. The capacity of these humidifiers is good enough for a room of up to 500 square feet (45 m²).
This humidifier has been on the market for a number of years already and it has collected thousands of reports on Amazon alone. There are no heaters here, so this one of those that create cool mist, with 9 oz (270 ml) per hour output. The large 6-liter (1.6 gallons) water tank is good enough for up to 50 hours before refilling.
You have a tray where you can add essential oils that will mix with the mist from the air humidifier. You can use it if you wish, it is not compulsory. An integrated fan circulates the oil into the mist and the mixture spreads through the room. They describe it as ideal for baby rooms. It features a blue LED nightlight.
The mentioned auto shut-off feature is included in the design to ensure your safety and to prevent any damage to the machine, so no worry if the vaporizer runs out of water. This gadget keeps the relative humidity above 43%, and they claim that it helps with allergies, coughs, and for clearing sinuses. All in all, this is a unique filterless economical and sustainable design. Note, this is a filter-less design, no need for additional expenses.
Levoit Hybrid Ultrasonic Warm and Cool Mist Humidifier LV600HH
As you see from its name, this Levoit Hybrid Ultrasonic Warm and Cool Mist Humidifier LV600HH is designed for both warm and cool mist. It is in such a position here in the list because of its large 6 L water tank. With one full tank you have 36 hours of continuous use at the low mist level.
This is a sophisticated ultrasonic quiet device with a built-in sensor that instantly adjusts the humidity level.
It comes with an automatic shut off system, a remote control, and without a filter. Note that this is also an essential oil diffuser.
Air Innovations Humidifier
This Air Innovations Humidifier MH-701BA is an ultrasonic cool mist device with a large 1.7-gallon (6.4 l) tank for 96 hours of continuous operation, a remote control, a programmable built-in humidistat, and much more.
With such a water tank this is a device from the group of large home-use humidifiers, and they claim it is strong enough to provide humidity in rooms of up to 600 sq. ft. (56 m²).
It has an integrated programmable humidistat that monitors and maintains the humidity on the level you set. They also claim it is built from an antimicrobial plastic that prevents bacteria, mold, and mildew growth.
This device also comes with a permanent ceramic filter to help trap impurities from the water, so that they do not spread through the air. It comes with a 15 inches extension nozzle and this is here to use this device also as a floor device, it adds a lot to its overall height. It is equipped with a 360-degree rotating mist nozzle to direct the moisture where you want it most.
Other features include handles on the tank, and an extra-wide opening for easy filling and carrying. You also have a programmable timer to turn it on and off, this saves you from refilling frequently. This is a part of its advanced digital interface which allows you to adjust the mist level, dim the display, or turn the button beeping off. This same display also shows what your current humidity level is and you can adjust it easily. An auto shut-off and also an audio beep are there as well to warn you when it runs out of water.
A remote control is included so you can do all the mentioned adjustments remotely, this is all a very user-friendly design. This is a humidifier that allows for aromatherapy, you have an essential oil humidifier pad.
- Weight: 6 lb (2.7 kg).
- Dimensions (H x D): 18.5 x 8 in (47 x 20 cm).
- Water tank: 1.7 gal (6.5 l).
In this video you will be able to see all the essential features of this Air Innovations Humidifier MH-701BA and how it works:
KEECOON Ultrasonic Humidifier for Large Room
This KEECOON Ultrasonic Humidifier for Large Room is elegant and feature-rich in the group of large humidifiers with its 7.5 L water tank, a freestanding tall device designed to stay on the floor.
As an ultrasonic device, it is very quiet and the declared maximum noise level is only 32 dB. It operates with three different mist levels, and you refill it from the top. You have an auto shut-off system in place so the humidifier will stop automatically when the water runs out. Note also that it comes with a touch and wireless control.
The structure is narrow and tall and it has a wide base, but if you have kids running around it is best to keep this device out of their way or think about ordering something different. Once the reservoir is full, it will run for 24 hours continuously. You refill the reservoir from the top, and note that it is removable, so it is easy to keep it clean and hygienic.
Constant humidity function: this is a cool feature here, just set your desired humidity with this constant humidity function and it will keep it at the chosen level. It will automatically switch on and off when necessary to keep the humidity on the chosen level.
- Weight: 5.51 lb (2.5 kg).
- Dimensions (H x D): 28.9 x 11 in (73 x 28 x 28 cm).
- Reservoir: 7.5 liters.
- Max noise level 32 dB.
- Max mist output: 300 ml/h.
You can see more about this KEECOON Ultrasonic Humidifier in this short video:
Venta LW25 Airwasher 2-in-1 Humidifier and Air Purifier
This Venta LW25 Airwasher 2-in-1 Humidifier and Air Purifier is a filter-free device that purifies and humidifies the room air. This is behind the 2-in-1 in its name.
You have a 2 gallons tank (7.6 L) and this device is for spaces of up to 400 square feet (37 m²). There are three fan speeds and an auto shut-off system. Note that there is no visible mist here, and you will want to know that it operates with ordinary tap water, so no extra expenses of any kind.
Yet another detail you might want to know is that it comes with a warranty of 10 years, and it is made in Germany.
The principle of work of this machine you can see in this video, please have a look:
BONECO Humidifier Air Washer W300
This BONECO Humidifier Air Washer W300 is a device with a dual purpose. It purifies the air and it also humidifies it. This is a filter-less design, or better to say it is the water itself that washed the air which is forced through the device.
Formally this is a cool mist device and this is the reason for adding it here in the list, but note that the moisture released from this machine is invisible.
You have a huge 12 liters tank so the device can work up to 3 days with one fill. It works with two levels of operation, and it is also compatible with essential oils, so this is its third function as an aroma diffuser.
Please see a bit more in this video:
So this was our list of best rated cool mist humidifiers without filters or with integrated permanent filters. If you are unable to decide, this table with our top choices might help:
Editor’s Choice: Levoit Hybrid Ultrasonic Warm and Cool Mist Humidifier LV600HH
Excellent air humidifier with all the features you need
Product Name: LEVOIT Humidifiers for Large Room Bedroom LV600HH
Product Description: This Levoit Hybrid Ultrasonic Warm and Cool Mist Humidifier LV600HH is designed for both warm and cool mist, and it works on ultrasonic technology. It is one of the larger devices of this type with its 6 L water tank.
Ease of use
My overall rating for this device is Excellent, and for all good reasons. Note that for such a large water tank this is a very light humidifier,
User Review( vote)
- All functions needed in a humidifier.
- Large tank.
- Remote control.
- It looks cool and elegant.
- Very light.
- Complaints about leaks.
Note that this list will be updated whenever we find a good device worth adding here. This is why you might want to bookmark this site and visit occasionally.
Please check also our separate list with best dual humidifiers that produce both warm and cool mist. You might want also to see our separate list with best rated air purifiers for home. Thank you for reading and have a nice day.
Last update on %last_update% / Affiliate links / Images from Amazon Product Advertising API