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Top 13 Best Humidifier For Plants Review With Buying Guide [2021]

The best humidifiers for plants are those which not only improve the health of your plants but also improve your health as well. During cold periods, heaters tend to dry the air inside a home, causing damage to indoor plants.

The purchase of a humidifier is essential to solve this problem.

On the other hand, many do not find it easy to buy them because the offers are particularly abundant.

Therefore, we recommend taking into account the size, design, and capacity.

We have also prepared a list to help you choose the best plant humidifier to help simplify your research.

Best Humidifier For Plants [Top Picks]

Pure Guardian
Pure Guardian
Air Innovations

What is the best air humidifier for plants?

The best air humidifier on our list is the TaoTronics Ultrasonic cool mist humidifier.

Why is TaoTronics Ultrasonic cool-mist humidifier the best air humidifier for plants?

After proper research and reviews, we have selected TaoTronics Ultrasonic cool mist humidifier for its long-running time as well as its design and durability.

Top 13 Best Humidifier For Plants Review

01. Vicks Warm Mist Humidifier


Highlighted Features

  • Dimensions: 12 x 7.88 x 14.25 inches
  • 1 Gallon water tank capacity
  • Silent noise operation
  • Humidity level regulation
  • VapoPads for scent

The Vicks brand is always thinking about providing good health for families as well as offering a healthier environment, thereby preventing infections, irritations, among other conditions.

The warm steam of the Vicks Plant humidifier helps to create a fresher and cleaner environment for up to nine continuous hours thanks to its 3.8L tank size.

Other than its long-running time, another great feature of the Vicks Warm Mist Humidifier is its silent operation which can be further minimized using its night power mode.

Also, the humidifier allows the use of vapor-rub pads, as well as pads with different scents, to not only eliminate bad odors but also to improve respiratory health.

In terms of its construction, this model is made solely of high-quality and rust-resistant materials.

With a transparent water tank capacity of 3.8 liters, it facilitates its extraction quickly and effectively when cleaning and filling.


  • Offers humidity level regulation
  • Suitable for rooms reaching up to 500 square feet
  • Features Silent and noise-free operation


  • slightly bulky design
  • Requires regular cleaning

02. LEVOIT Cool Mist Humidifiers


Highlighted Features

  • Dimensions: 8.5 x 6.7 x 10.2 inches
  • Lightweight at about 2.5lb
  • Water Tank capacity of 2.5L
  • Whisper-Quiet Operation
  • Advances Ultrasonic Technology

The Levoit humidifier is an ultrasonic device that offers a powerful flow ideal for easily covering a large area.

Thanks to a large capacity tank, you can enjoy an important autonomy which is all the charm of this device with its clear and transparent design.

To effectively diffuse its hot or cold mists, the device embeds practical and ingenious features and functions.

Like all models of ultrasonic air humidifiers, this one also offers quiet operation.

Indeed, this device seduces by its incredible discretion by emitting only about 28 dB.

Its discreet operation allows you to sleep well at night without hearing any noise.

We find it remarkably practical, especially since despite such quiet operation, the Levoit ultrasonic humidifier offers versatile operation with its two types of vapors, hot steam, and cold vapor.

An advantage of these vapors is that whatever steam you prefer, you have the option of choosing one of five different flow levels depending on your needs and the season.

The outlet of the hot or cold mist from the Levoit air humidifier is through a double nozzle with a 360° operation.


  • Features a high flow rate of 450 ml/h
  • Comes with a 2.4-liter tank
  • A sleek and elegant design


  • Too many user precautions

03. Elechomes Warm and Cool Mist Humidifier


Highlighted Features

  • Dimensions: 10.4 x 7.2 x 12 inches
  • 5L Water Tank Capacity
  • Whisper Sleep Mode
  • The pumping capability of 600ml/h
  • Easy To Clean top-fill design

Nothing improves the health of an indoor plant better than a room with the perfect humidity level.

A good humidity level not only affects the temperature, but it also improves your health and ultimately your happiness.

Looking at the Elechomes Ultrasonic Humidifier, one can see a design with the most important needs of its users in mind.

We can boldly say that it’s manufacturers designed it majorly for comfort and convenience.

With its large 5.5L tank, the Elechomes mist humidifier can run for a period of up to 40 hours which is also a result of its long-lasting battery life.

When it’s time to refill, the easy-to-open top cover prevents spills and leaks.

Once a specific humidity level has been set, the device knows when to stop using its automatic humidity control.

While a vast majority like strong humidifiers, many prefer the strong but quiet type.

That’s why the Elechomes includes a sleep mode, which works at less than dB for a full night’s sleep.


  • Easy to refill
  • Runs for a long period
  • Has a large water tank


  • Tends to release a white film

04. UCAREAIR Cool Mist Humidifier


Highlighted Features

  • Dimensions 8.03 x 5.98 x 9.09 inches
  • Lightweight at about 1.5 pounds
  • Automatic shut off
  • Smoothing night light
  • Whisper-quiet operation

To guarantee a bacteria-free vapor, the Icareair has been fitted with an ion exchange resin filter.

This effectively eliminates all impurities, thus ensuring hygienic use.

Experience a clean mist that will gently sustain plants, treat dry skin, and help fight certain illnesses, such as the common cold or the flu.

Working continuously for 16 hours before exhausting its water reserve, this cool mist humidifier doesn’t require frequent refills.

Also, there is a dial that helps to accurately control the streaming speed. This will help to adapt the ambiance to the outside climate.

This mist humidifier gives an amazing experience with its super silent operation that works within a noise level of 32dB.

Besides being a great plant humidifier, it can also be used as a treatment for ailments and to improve the scent of an interior.


  • Long battery life
  • Makes little to no noise
  • Easy to operate


  • Prone to leakages

05. Pure Guardian H4810AR Ultrasonic Warm and Cool Mist Humidifier


Highlighted features

  • Dimensions: 7.75 x 15.03 x 12.48 inches
  • Ultrasonic Technology
  • LED night light
  • Dual rotating Nozzle
  • Silent Operating System

Pure Guardian H4810AR Ultrasonic Humidifier is a product of guardian technologies, known for manufacturing quality home products.

With a tank capacity of up to 2 gallons, it can work tirelessly for about 120 hours.

Thus, it can very well run for days, but on condition that the tank is well filled.

Like most of the other plant humidifiers on this list, the device is equipped with ultrasonic technology.

Thanks to its silent system operation, it emits a very low sound.

For this reason, we consider this humidifier suitable for bedrooms including that of babies.

As obvious as it seems, design greatly influences the comfort of use of such devices, and the Pureguardian isn’t left out.

By using the timer built into this device, it allows full control of the operating time, allowing it to be set to a particular time.

Also, it offers the option to switch between cool and warm mist while also offering 3 different speed settings.

This an essential option to use this machine as needed.


  • Great for large rooms
  • Run time up to 120 hours
  • Easy to clean


  • Leaves white dust in hard-water areas

06. Crane Ultrasonic Cool Mist Humidifier


Highlighted Features

  • Dimensions: 8.6 x 13.4 x 8.6 inches
  • Runtime of 24 hours
  • 1 Gallon Tank capacity
  • Whisper-quiet operation
  • Mist Range of up to 500 sq ft

Choosing a humidifier for an indoor plant can be a difficult task.

People want something efficient, easy to clean, and operates at a very low decibel.

Those who have babies and toddlers need a humidifier in their bedroom to keep their nasal passages from drying out, which can make them sick more often.

When stuck in the market for one, the Crane cool mist humidifier is a great device to check out.

This drip humidifier gives a 1-gallon filterless construction that can run for up to 24 hours.

Of course, no one wants a loud humidifier that will disturb their sleep or even wake a child up.

That is why this device features a quiet operation, producing minimal noise as well as a cool and pleasant mist.

Another notable feature is its ability to provide moisture up to 500 square feet.

Cleaning is pretty easy compared to many other humidifiers out there in the market.


  • Suitable for large rooms
  • Easy to maintain with no filters
  • Easy to fill the tank


  • Requires effective cleaning
  • Its green light is not suitable at night

07. Pure Guardian H965AR Ultrasonic Cool Mist Humidifier


Highlighted Features

  • Dimensions: 8.5 x 8.5 x 14.25 inches
  • 1 Gallon tank capacity
  • Aromatherapy Tray
  • Ultrasonic Technology
  • Automatic Shut Off

This quiet air humidifier is designed with a capacity of 1 full gallon, making it suitable for rooms with a surface area of 320 sq. ft.

With its capacity, we find it useful for plants placed in any room within the house.

With a sound level within the 30 dB range, this quiet air humidifier will work without disturbing or making loud noises.

This makes it great to use at night or in the office without it interfering with sleep or concentration.

Thanks to an automatic shut-off system, it turns off by itself when the water level drops low enough.

A red indicator light also serves as an alert or notification to refill the tank.

As a result, it will not run without reason, which will preserve its engine. Also, the ABS base guarantees a good seal.

There will therefore be no leakage, which will ensure autonomy, allowing it to operate for up to 70 hours depending on the speed of diffusion.


  • Easy to use
  • 70 hours run time
  • Silent operation system


  • Requires frequent maintenance

08. MIRO-NR08M Completely Washable Modular Sanitary Humidifier


Highlighted Features

  • Dimensions: 14.3 x 12.5 x 12.4 inches
  • Mist capacity of 600 sq. Ft.
  • LED mood light
  • BPA free
  • Hassle-free Control Panel

Miro ultrasonic humidifiers cause hot or cold water to evaporate using ultrasound that makes the water hit the metal walls of the device.

Manufacturers of this Miro humidifier have a reputation for producing extremely quiet humidifiers.

The Miro is designed to ensure solid health from the start of the program to its complete wash.

As for the set up of the device, it can be easily assembled and disassembled using magnets.

With a super clean and large water tank, it can conveniently hold nearly 1 gallon of water.

While the device is running, the vapor passes through a certified h13 HEPA filter which provides quality vapor filtration so that the air is better.

The Miro ultrasonic fogger is also as efficient compared to other air humidifiers sold by different brands.

It can humidify the air in a room for eight hours at maximum power or 24 hours at minimum power.

Covering a large area of approximately 600 sq.

Ft, it makes it ideal for purifying a living room, a personal office, or an apartment of less than the maximum capacity.


  • Easy to clean
  • Hassle-free interface
  • Easy to assemble with built-in magnets


  • Fragile product

09. TaoTronics Cool Mist Ultrasonic Humidifier


Highlighted features

  • Dimensions: 8.07 x 5.31 x 11.81 inches
  • Whisper Silent Operation
  • 4L tank capacity
  • Night light/ sleep mode
  • Microporous Cartridge Filters

The TaoTronics TT-AH001 is an ultrasonic air humidifier and is undoubtedly the best humidifier for plants in its own right.

This model is particularly suitable for an area between 107-322 ft² as it’s ultrasonic technology releases a cold mist, which is safe and prevents burns.

Where this device stands out is its large capacity to contain up to 1 gallon of water.

This quantity is largely sufficient for approximately 15 hours of autonomy.

Of course, everything depends on the steam flow: the more you increase it, the more the duration decreases.

An added value of this humidifier is its filter installed at the bottom of the tank to purify the water, ridding it of microorganisms, calcium, magnesium ions, etc.

Concretely, it has a micro-porous cartridge, such as one finds in water filters.

Although this is a long-lasting filter, we advise replacing it every 4-6 months especially if using hard water to keep the spray mist healthy.

At the top, the nozzle that delivers the steam can be rotated 360 ° according to everyone’s wishes.

With a quick look at this model, one can see that the base is equipped with a digital screen with control buttons to adjust the timer, humidity, and steam.


  • Uses a silent operation
  • Easy to use
  • Automatically shut off for low water levels


  • Not suitable for large rooms

10. Air Innovations MH-408 Black Cool Mist Humidifier


Highlighted Features

  • Dimensions: 8 x 8 x 14 inches
  • 360-degree Nozzle rotation
  • Permanent Ceramic Filter
  • Whisper-Silent Operation
  • 1.1-gallon tank capacity

Manufactured by Air Innovations, this humidifier has a tank with a capacity of 4 liters.

For this reason, it can conveniently ensure autonomy which can reach up to 70 hours.

During this period, there is no need to refill the tank if it had already been filled from the start.

Once there is no water in the tank, the device stops working without having to turn it off.

This is possible thanks to its automatic shut off feature that is incorporated into the system.

Whisper Quiet technology is another great addition to this humidifier as it allows it to operate in silence, causing less disturbance.

With this device, it makes it possible to adjust the humidity level in the room according to your wishes.

Thanks to its touch screen, one can closely follow the evolution of this rate.

That said, it allows full mastering and control of all the conditions in the chamber so that it adapts to l requirements.

Also, it gives info on the temperature in the places with the thermometer built into this product.

After that, it only remains to adjust the heat using the cool mist diffuser to have a comfortable atmosphere.


  • Filter doesn’t require replacement
  • Offers a silent operation
  • Easy to use and clean


  • Prone to leakage

11. Homech Ultrasonic Cool Mist Humidifier


Highlighted Features

  • Dimensions: 10.55 x 8.58 x 6.5 inches
  • Optional night light
  • 360 degree mist Nozzle
  • Waterless Indicator
  • 30 hours runtime

Homech has proven itself to be a top tier manufacturer of home appliances that make for easy and convenient living.

The Homech Ultrasonic Cool Mist Humidifier is elegantly designed to not only provide quality cool mist but also blend in with the decor of any room.

Standing at a height of 23.6 inches, this device is lightweight, weighing about 3.24 pounds.

Enjoy a full and even cool mist distribution with its 360° degree rotating nozzle, allowing it to direct the mist towards any direction.

With its whisper-silent device operation and night mode, it allows an uninterrupted and noiseless sleep for its user.

Despite its low tank size of about 0.67 gallons, the humidifier can cover up to 107-270 ft².

Another notable feature is its 90 mm water inlet that allows the user to clean, refill, and wash up the humidifier conveniently.

Finally, the humidifier has a runtime of 30 hours when operating at minimum speed.


  • Easy to clean and maintain
  • Noiseless sleep for its user
  • Elegant design


  • Tends to form molds

12. Elechomes HTJ-2119 Ultrasonic Humidifier


Highlighted features

  • Dimensions: 9 x 6 x 11.5 inches
  • Large LED display with child lock
  • 360 Twin mist Nozzles
  • Auto-Off function
  • Remote control

This inexpensive air humidifier in polypropylene, ABS, and Silica Gel will do its job for a long time due to its strength.

Shock, vibration, and high temperature will have little effect on it thanks to its sleek and sturdy design.

It’s LED display gives it a futuristic look that is pleasant to the eye.

This humidifier seems to be the only one with a portable remote control allowing one to adjust its settings from any distance within 6km.

We can’t completely describe this humidifier without mentioning its super quiet operation which blends well with the sleep mode, preventing any disturbance when sleeping.

It’s twin nozzles allow the device to even distribute the mist across the room.

With dimensions of 9 x 6 x 11.5 inches, this item features a compact design, making it easy to carry, or put in a bag when moving or taking it for long travels.

Instructions for use are also available in the package, helping you to use it with ease.


  • Super quiet operation
  • Sleek and long-lasting design
  • Features a remote control for improved convenience


  • Doesn’t offer a hot mist
  • Prone to water leakage.

13. TaoTronics BPA Free Cool Mist Humidifiers


Highlighted Features

  • Dimensions: 8.4 x 5.12 x 9.96 inches
  • BPA free
  • 360° mist nozzle
  • smart LED indicator
  • Automatic Shut Off System

In terms of design, this is one of the most elegant models on the market. Also, we find it to be useful, efficient, and perfect to decorate a room.

The steam projection nozzle rotates 360 ° to send the steam in the direction you want, and the rather imposing base is equipped with a digital screen with 5 adjustment buttons below.

Nothing much to say, however, on the build quality. The assembly is impeccable, everything seems perfectly solid.

Like most air humidifiers, this model is very easy to use. Its design allows us to easily lift the tank to clean or fill it.

Once full, put it back in place it automatically snaps into its base.

A single button allows the user to adjust the vaporization level between low, medium, or high.

One can also program the humidity level needed in the room, between 40 and 95%.

According to its settings, the manufacturer promises an autonomy of about 20 hours for a full 1.8-liter tank.


  • Elegant design
  • Easy to use
  • Noiseless operation


  • Very fragile device

Best Humidifier For Plants: Non-negotiable Buying Facts

When choosing the best humidifier for plants, a very important factor to assess is the performance of the air humidifier i.e.

its operating time and the size of the room that it can humidify effectively.

Autonomy Operation

autonomy is closely linked to the capacity of the tank and the possibility of adjusting different levels of vapor emission.

One observable feature is that the more water the tank can hold, the longer the humidifier will be able to operate without interruptions due to its exhaustion.

While the possibility of setting a low emission level makes it possible to further extend the duration of the water supply.

Existence capacity

Indicatively, a 4L tank corresponds to approximately 12-15 hours of autonomy with minimum emission, at least for ultrasonic humidifiers.

Boiling devices, on the other hand, consume their stocks a little faster, and for the same capacity (4L) offer a slightly shorter autonomy, between 9 and 11 hours.

The size that a humidifier is capable of effectively humidifying depends on the maximum amount of vapor it can emit, measured in ml/h.

Low emission humidifiers, around 200ml/hr or less, are suitable for small rooms of less than 20m², while higher emission devices, 400ml/hr or more, can efficiently serve rooms of 50 to 60 m².


A major factor of interest to allergy sufferers and those whose respiratory tracts are particularly sensitive and irritable concerns the systems for sanitizing the vapor or air emitted.

The most sophisticated models of air humidifiers, usually ultrasonic, are often equipped with filtering systems or other means of disinfecting the water in the tank.

These can range from a simple coating of the internal walls with silver ions, effective in neutralizing bacteria, to microporous ceramic filters capable of capturing and retaining both microorganisms and mineral particles in the body.

Air cleaning Ability

Regarding the effects on the air, some models are equipped with a built-in ionizer, which negatively charges the emitted vapor so that it binds to particles and allergens dispersed in the air, favoring their deposition on the soil and surfaces.

However, it must be said that in recent years there has been some skepticism towards humidifiers with ionizers and all ionizing equipment for the treatment of air in general.

This is because the generation of negative ions by a humidifier with ionizer also has the side effect of producing ozone and this gas is harmful to health even when inhaled in small amounts.

Finally, some high-end models are also true air purifiers and adopt air suction and filtration systems in addition to water.

You should be able to ask, at this point, what is more, appropriate between an air humidifier or a purifier.

It all depends, of course, on what kind of problems you want to solve: a purifier is excellent for relieving people with allergic rhinitis (to pollen, dust mites, or animal hair), but in itself, it has no impact.

on-air humidity. On the contrary, the antiallergic action of an air humidifier is generally not as effective, since humidification is its main function.


Another very interesting factor to evaluate in a humidifier is the functions with which it has.

We have already mentioned how some models, usually mid-and high-end ultrasonic models, come with an ionization feature that helps clean the air of dust and allergens dispersed therein.

However, this is not the only function that can be found on an air humidifier.

The most common and easiest to find is an automatic shutdown, which allows the device to shut down and standby when the water level reaches levels too low to continue operating.

The other functions that you may come across are as follows:

Run Timer:

In a humidifier with a timer, you can set a preset run time, even up to 12 consecutive hours or more

Emission control:

allows you to adjust the emission intensity to different levels, a useful function if you want to obtain a faster result or if you want to humidify a large environment

Regulation and maintenance of humidity percentage:

in humidifiers with an integrated hygrometer, you can specify the percentage of humidity you want to achieve in the room.

The presence of a hygrostat in parallel then makes it possible to maintain it automatically

Night mode:

this is a silent operating mode, generally with minimum emission, sometimes accompanied by an additional guide-me-home lighting function

Essence diffuser:

more common in hot and evaporative humidifiers than in ultrasonic humidifiers, it generally consists of a tray in which aroma drops are poured (based on essential oils in many cases ) to diffuse in the air.

Humidifiers with an essence diffuser are often found on the market also under the name of essential oil diffusers.

In this case, they are ultrasonic models with a reservoir of very small size and capacity, but suitable for use with essential oils without the risk of damaging the transducer.

As in these cases, the main function is to perfume the room.

An ultrasound diffuser has a generally very low flow rate and is not able to humidify effectively except in a very small room.


Finally, it may be useful to assess the heaviness and complexity of cleaning the air humidifier and whether there are recurring costs, for example for the periodic replacement of certain filters.

Firstly, we have to understand what type of humidifier we have because of course, the cleaning and maintenance operations are different depending on the type.

One thing remains the same for everyone: cleaning the tank.

Regardless of the humidifier, the tank should be cleaned once a week.

This will prevent the growth of mold, and prevent it from being dispersed into the air by the humidifier.

This is because breathing in mold spores are harmful to health!

How to use an air humidifier?

Examine your device’s battery charge status before using it

If your model is running on a battery, check to see if the battery is fully charged before using it.

Otherwise, your device may suddenly stop while humidifying.

To overcome this problem, opt for copies that are powered by mains. They have unlimited autonomy.

Remember to wash the tank of your air humidifier before using

For first use, we recommend cleaning the tank of your device before using it.

To do this, you need to remove this component and unclog it with water and mild soap.

This action ensures that you get rid of manufacturing odors from your humidifier when you turn it on.

Put water in the tank of your equipment

Before turning on your humidifier, don’t forget to pour water into the compartment provided for this purpose.

The most recommended is distilled water because it does not contain additives.

Also, you can run physiological saline in it instead of water.

This is recommended especially if you have small children. As a result, the risk of lung diseases will be reduced to a minimum.

Clean your device frequently to continue using it healthily

Over time, bacteria can grow in your device. To eliminate them, wash them at least twice a week. With this in mind, water and a mild detergent will do just fine.

To effectively kill germs, add little white vinegar and hydrogen peroxide.

Best Indoor/Outdoor Plant Humidifiers: Buying Question

How to make an air humidifier?

To build an air humidifier, start by creating spirals of wire. Then wrap each one around a test tube.

Prevent these two components from coming into contact by using insulators, such as beads. Connect the containers with another wire, taking care to hold them.

Then place everything on a radiator, using both ends to secure it. Finally, pour water into the tubes and turn on the radiator.

Are Air humidifiers needed in my house?

To find out, use a hygrometer already. You will then know the humidity level in the room to know if this type of device will be necessary or not.

Of course, you will also find it necessary to use it when you feel that your throat is drying up.

The same goes for the nostrils when you are in the house.

How does an air humidifier work?

Most devices generally work automatically. Its design gives it the ability to detect humidity levels in the ambient air and to raise it if the need arises.

The water in the tank will then be vaporized, which will mist the entire room in which the device is located.

You have to choose the location carefully, such as the center of the room.

Ultrasonic or steam air humidifier?

With the steam model, the water is evaporated and diffused throughout the room, usually through a radiator.

But many people today use ultrasound humidifiers.

The latter does not require the use of an additional device, which ensures better ergonomics.

It uses a specific plate that transforms water to spread it into space.

Why buy an air humidifier?

This type of device is mainly used to improve the health of people living in the house.

This is because it helps fight the germs and bacteria that cause colds and flu.

Air purification especially by an ultrasound model promotes the well-being of people suffering from respiratory disorders, sleep problems, regular coughs, and other illnesses.

It also lowers the temperature in a room in the case of hot weather or climate.

Where to place an air humidifier?

For this device to work optimally, find the right place for it should be of high importance.

Be aware first of all that it should not be installed near a wall or furniture. This would inhibit the broadcast range, making it less reliable.

To ensure the correct use of this device, remember to place it in the center of the room.

This will therefore optimize its efficiency. Be careful to avoid any obstacles, especially wooden ones, as moisture will quickly deteriorate them if they are too close.


To protect the health of your plants as well as yours, you should consider getting only the best humidifier for plants.

From the list above, we have selected 13 humidifiers that are certain to meet your needs or requirements.

These devices are each endowed with amazing features that will make your purchase worthwhile.