5 Greatest Humidifiers for Large Rooms – Enjoy Your New Healthy Home!

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Last updatedLast updated: June 08, 2021
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One of the best ways to improve the overall air quality in your home is to add a humidifier. These wonderful devices add moisture into the air, which can help to alleviate breathing and allergy issues that you might have. Of course, not all humidifiers are the same, and you’ll want to look carefully for the best humidifier for large rooms if you have a sizable space that you want to humidify. Otherwise, you might end up with a device that can’t add enough moisture to match your room size.

There are lots of different features that we took into account when we were putting together our comprehensive list. We looked at the mist type that the humidifiers produce, as well as the tank capacity. We also analyzed the coverage area and the sound level. Depending on the size of your room, you will need to take each of these factors into account to make sure you get the best results with your new humidifier.

We have spent numerous hours researching hundreds of user reviews to put together our comprehensive list, which you can see below. If you already know what you are looking for to find the best humidifier for large rooms, then you can jump right into our detailed reviews. If not, then be sure to check out our buying guide, which will give you all the background knowledge you need to make an informed decision.

Top 5 Humidifiers for Large Rooms Review 2021


Vornado Evap40Editor’s Choice

  • Type: evaporative
  • Water tank capacity: 15 L.
  • Mist time: up to 24 hours
  • Covering area: 1000 sq. ft.
  • Sound level: 31 dBA (on low speed)
  • Warranty: 5-year limited

Other features: three-speed settings (low, medium, high); leak-free water tank

If you are looking for the best humidifier for large rooms, then you will definitely want to check this one out. It has a very large coverage area, which makes it perfect for sizeable homes. This is also one of the easiest to set up humidifiers on the market since there are only two very simple dials that you need to operate with this model.

One of these is a moisture control, which will allow you to customize the humidity level. With the other dial you can choose from three different speed settings. The only drawback to this system is that there is no accurate way to measure the humidity on the unit itself – to do this, you would have to buy an additional hygrometer.

The tank is exceedingly effortless to fill, which will only have to be done every 24 hours or so. This is also one of the simplest to clean humidifiers available, thanks to the easy-to-install filters.

You just need to change the filters often so that the device and your house’s air will remain bacteria free. You can also wash the filters every once a week in white vinegar to extend their life. Even if something were to go wrong with this device, you could rest easy with the knowledge that it is backed up by a five-year warranty. As long as you perform the proper regular maintenance, you will be covered.

What are its best features?

  • Very quiet
  • Large coverage area
  • Long warranty
  • Different speed settings
  • Easy to clean
  • Long runtime

What could be improved?

  • No hygrometer
  • Short filter life
RELATED: 7 Most Practical Whole House Humidifiers – Bring Health to Every Corner of Your Home!

Vornado Evap3Best Evaporative Humidifier

  • Type: evaporative
  • Water tank capacity: 5.7 L
  • Mist time: not specified
  • Covering area: 700 sq. ft.
  • Sound level: “whisper-quiet.”
  • Warranty: 5-year limited

Other features: 2 filters included; push-button controls with LED lights

While this might not have the coverage area of the previous entry, it just might be the best evaporative humidifier for a large room. It still has a coverage area of 700 sq. ft., which should be enough for most large rooms. This is one of the easiest models to keep clean, mostly because it comes with two filters that are installed at the same time. While the filters will tend to harden up pretty quickly if you don’t clean them, they will last a good long time – just rinse them out with white vinegar once a week. If this is done, then you shouldn’t have to change them up for ten weeks.

Even if the filters do get dirty, this is one of the easiest models to keep clean. The parts can all be detached from the device and cleaned thoroughly. Once they have been cleaned and dried, all of them can be put back together with ease. You will want to clean it regularly since minerals can quickly build up, which could lead to mold or algae growth.

Something else you will want to keep in mind if you select this humidifier, especially if you are going to use it in a bedroom are the LEDs on the controls. They are really bright and might make it difficult for you to sleep at night. They cannot be turned down, unfortunately.

What stands out?

  • Long warranty
  • Very quiet
  • Automatically regulates moisture output
  • Easy to clean

What cons did we manage to find?

  • Requires filters
  • Very bright LED controls

Everlasting Comfort Ultrasonic Cool Mist HumidifierBest Humidifier with Essential Oils

  • Type: ultrasonic; cool mist
  • Water tank capacity: 6 L.
  • Mist time: up to 50 hours
  • Covering area: up to 400 sq. ft.
  • Sound level: not specified
  • Warranty: 2-year limited; lifetime hassle-free replacement

Other features: essential oil tray; auto shut-off; no filters needed

Aside from adding humidity to the air, there is no better way to help alleviate breathing or allergy issues than with the use of essential oils. The biggest issue with these oils is that the diffusers are usually pretty expensive. That is, of course, unless you just combine the two and purchase this humidifier. It has a built-in tray, which will allow you to use the appliance as both humidifier and essential oil diffuser. This makes it an awesome humidifier for asthma and sinus symptoms relief.

As you might assume with such a size of humidifier, this model has a smaller coverage area than the two previous models do. While this will limit the rooms that you can use it in, the unit boasts a long runtime instead. In fact, of all the different models that we looked into, it had the longest overall runtime, clocking in at an astounding 50 hours.

Once the Everlasting Ultrasonic Humidifier does run out of the water, it has an automatic shut-off feature to prevent the humidifier from suffering any damage due to overheating. This will also help extend the life of the humidifier since it won’t be running needlessly should you forget to turn it off or refill it.

While this is a user-friendly filterless humidifier, it does have some issues to keep in mind. It is a bit tricky to refill. The tank is also somewhat flimsy, so you will need to be careful with it when you fill it up. Finally, since it’s smaller, it is more difficult to clean.

Why did it make our list?

  • Essential oils tray
  • Long runtime
  • Automatic turn off
  • No filters necessary
  • Lifetime warranty

What is not ideal about it?

  • Difficult to refill
  • Plastic tank
  • Cleaning might be a tough task to perform
RELATED: 6 Powerful Filterless Humidifiers — Bring Health to Your Home Without Any Fuss!

Levoit LV600HHBest Warm and Cool Mist Model

  • Type: ultrasonic; cool and warm mist
  • Water tank capacity: 6 L.
  • Mist time: up to 36 hours
  • Covering area: up to 753 sq. ft.
  • Sound level: not specified
  • Warranty: 1-year limited (can be extended to a 2-year period with an order number from Amazon)

Other features: comes with three aroma pads, a cleaning brush, and a remote control

One of the coolest features for this steam humidifier that helps to set it apart from its competitors is the fact that it can produce both cold and warm mist. This will allow you to get the exact type of humidity that you desire. If you are suffering from respiratory issues, then you will want to use the warm mist settings. On the other hand, if your skin is dry, then you could instead opt for the cold mist.

Something else that works to set this humidifier apart is clear and easy-to-read display. Not only will this tell you the mode in which the humidifier is operating, but it will also allow you to see the level of humidity in the room that you are using the device in. While the humidistat is not always as accurate as possible, it will still give you a ballpark figure to base your moisture usage.

The tank on this model is a bit tricky to get in and out. You need to be really careful when you are refilling it so that you don’t spill water when you reinstall the tank. Since you have to angle the tank to get it back into place, you don’t want to refill it to its maximum capacity. The tank is also made out of thin plastic, so treat it with care. Luckily, even if you don’t fill the tank all the way, this humidifier can run for 36 hours easily.

Something else that helps to keep this humidifier running for a long time is the fact that it is programmable. It is quick and easy to set the humidifier to run on your customized schedule so that you can make sure that the level of humidity is always right where you want it to be.

Why did it make our list?

  • Easy-to-read display
  • Remote control
  • Programmable
  • Warm and cool mist option

What is not ideal about it?

  • Difficult to refill
  • Brittle tank
  • Inaccurate humidistat
RELATED: 6 Powerful Filterless Humidifiers — Bring Health to Your Home Without Any Fuss!

TaoTronics TT-AH002Budget Pick

  • Type: ultrasonic; cool mist
  • Water tank capacity: 3.5 L.
  • Mist time: up to 10 hours
  • Covering area: up to 320 sq. ft.
  • Sound level: 38 dBA
  • Warranty: 1-year limited

Other features: double 360-degree rotatable mist nozzles; low water with a warning red LED indicator

If you are in the market for a cheaper humidifier, then look no further than this model right here. It is priced to be budget-friendly, but it is still highly effective. This humidifier would be especially good for a smaller room, such as an infant or child’s bedroom. It is a very quiet humidifier that would not keep anyone awake during the night.

Perhaps the best feature of this humidifier is its adjustable nozzle. While it doesn’t have the largest coverage area, this nozzle will help make sure that you get the humidity right where you need it, which is a huge benefit when you are using it in a child’s room. Thus, it’s a perfect baby humidifier thanks to its versatility, adjustability, and safety features.

Since it is a cheaper model, it shouldn’t be too much of a surprise that this device has a lower capacity and smaller coverage area than other humidifiers on our list. Thankfully, it does have a low water indicator to let you know when it needs to be refilled.

Unfortunately, as is the case with lots of ultrasonic humidifiers, this model is difficult to clean and refill. The tank is prone to leaking when you take it off, even if it seems to be completely empty. During refills, it would be a good idea to place a towel under the tank, to catch any drips that might come out.

What do we love it for?

  • Quiet
  • Adjustable nozzle
  • Low water indicator
  • No filter required

What were we disappointed with?

  • Low capacity
  • Small coverage area
  • Difficult to refill
RELATED: 6 Best Humidifiers for People with Sinus Problems — Say Goodbye to Illnesses!

Things to Consider

In this section, we will go through everything you need to know to make sure you find the best humidifier for large rooms.

Why do you need to increase humidity in your room?

There are several different reasons that you would want to increase the humidity inside of your home, especially in your bedroom.

First off, by increasing the humidity of the air in your room, you will be able to sleep better. The added humidity will decrease the likelihood of suffering from respiratory issues, such as coughing or congestion.

Secondly, the increase in humidity will help eliminate allergens in the air, which will also let you breathe easier. Finally, an increase in the humidity will also limit the effects that dry air has on the skin on your hands, lips, and feet.

Features to consider while choosing a humidifier

Humidifier for Large Room 6e1

In this section, we will talk about the key features you need to pay close attention to find the perfect humidifier for your needs.


There are several different types of humidifiers that you can choose from when you are looking for one to use in a larger room.  These include:

  • Ultrasonic – Ultrasonic humidifiers produce a cool mist that is safe to use around children. This type of humidifier uses a vibrating nebulizer to emit water into the surrounding air.
  • Evaporative – Evaporative models use a fan to blow air over a wet wick or filter to create a cool mist. This will add a bit of cost since you will need to replace these filters regularly.

Humidifiers can also produce different type of mist. Warm mist humidifiers heat water to a boil, and then emit steam to humidify the surrounding air. They often feature filters that will need to be replaced every once in a while. Pediatricians recommend this type of humidifier be avoided if children will be present since they could cause burns. In cold mist humidifiers water is not pre-heated, instead it is simply emitted into the air creating a pleasant cool moisturized atmosphere.

Water tank capacity

The water tank capacity is going to determine two different things for you. First off, the larger the capacity of the tank, the more mist you are going to put into the air. With a larger tank, you should be able to humidify a larger space for a longer amount of time.

Secondly, a larger water tank will limit the number of times that you will need to change and add water. A larger tank size will help increase the effectiveness of the humidifier since you won’t have to refill it as often as a smaller tank.

Mist time

Humidifier for Large Room 7

The mist time describes how long a humidifier can be used before it will need to be refilled. Since these are portable models, they have a limited supply of water that they can use. The mist time will also be determined by the type of humidifier you decide upon buying.

The cheaper a humidifier, the smaller the tank is usually going to be. It limits the mist time considerably, which is a bit of an inconvenience when you are trying to humidify a larger room, especially during the winter months when the air is naturally drier. It might be worth the money to get a model with a larger tank.

Coverage area

Before you decide upon a humidifier, you need to be sure that you measure your room size carefully to determine the proper area you need your humidifier to cover. While it might seem like the bigger, the better for when it comes to the coverage area, this is not really the case. You will want to make sure that the humidifier you select has a coverage area the same size as you need, or only a bit bigger.

Obviously, if the coverage area for the humidifier is too small for your space, you aren’t going to get the proper amount of humidity in your room. If you overbuy, however, you will have the opposite issue. In case you need to humidify your entire home, think of getting a whole house humidifier. Among them, there are also furnace humidifiers which are connected to your HVAC system to deliver the moisture to every corner of your house, doesn’t matter how big it is.

If you pick a humidifier with a large coverage area for a smaller space, you will introduce too much moisture into the air. This could lead at best to things getting wet, and at worst mold forming in your room.

Sound level

Since you, most likely, are going to be using this humidifier in a room that you will frequently be in, you want to be aware of how loud it is going to be before you buy it. Sound is measured in decibels or dB for short. The lower the dB level, the quieter the device is.

You need to be sure to read the packaging carefully. Since most of humidifiers can operate on different speeds, you want to make sure that you understand how loud each speed is. Otherwise, you might find that the sound level is not to your liking when you turn the fan higher. If you are looking for the quietest humidifier, then you should check out the Vornado Evap3, which is designed to be “whisper quiet,” regardless of the speed setting.


As you can imagine, there are a lot of different moving parts within a humidifier. Since most of these parts are also exposed to water on a regular basis, they are prone to breaking down, even if you follow the proper maintenance routine.

That is why you should look for a humidifier with a good warranty. The longer the warranty, the better. But be careful. Some of the long warranties out there are limited in their scope. You need to read through all of the fine print carefully, so you are aware of what the warranty covers and for how long it runs.

Extra features

Humidifier for Large Room 4e2

Diffusers can help alleviate a whole host of health issues, but such products can be expensive. There are, however, some humidifiers that double as essential oil diffusers. The best humidifier for large room with essential oils would be the Everlasting Comfort Ultrasonic Cool Mist Humidifier. This could be a good option for anyone who suffers from headaches or allergies, as the essential oils combined with the humidifier are a powerful force to alleviate these problems.

Another good feature to look for would be a clear display that lets you know the humidity level in the room. This will make it that much easier to achieve the proper humidity level for your particular needs.


While the oldest and surest method of removing bacteria from water or the air is to heat it up, other methods work just as well. In an evaporative humidifier, the way that this is achieved is with the use of filters.

These filters have been specially designed to remove any and all bacteria from both the water and the air, so you can rest assured that they do not spread sicknesses. You need, however, to change the filters regularly, or mold and bacteria will be able to form.

Generally, you want to make sure that the humidifier you select has a coverage area as close to your room size as possible. That way, it will be able to provide just enough humidifying power without doing too much.

In this instance, a 700 sq. ft. humidifier would work well for a 500 sq. ft. room, since the numbers are (relatively) close to each other. You just wouldn’t want to use a humidifier with a 1000 sq. ft. coverage area for the same size of a room, as this would put too much moisture into the air.

You might want to look into getting a whole house humidifier. These humidifiers are not portable and are instead installed (professionally) into your home’s HVAC system. While this might be a bit more expensive upfront, it might work out better for you in the long run.

Our Verdict

The Vornado Evap40 is by far the best humidifier for large rooms on the market today. It is simple to set up, easy to use, and has a humongous coverage area. The filters that it uses help make sure that no bacteria or mold can form, as long as you take the time to clean them regularly. If you have a big space you want to add moisture to, than we highly recommend this humidifier.

Of course, if you don’t have such a big space, then you might want to go for the Vornado Evap3. This humidifier is good for medium to large-sized rooms, and, much like the Evap40, is very easy to use, fill, and keep clean.

The Everlasting Comfort Ultrasonic Cool Mist Humidifier is a great option if you also want to use essential oils while you humidify your air. This powerful combination will help improve the air quality in your home immensely.

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