It is pretty easy to manage and control humidity across most modest or small-sized rooms today, using a humidifier that is good enough, but when it comes to ample space, many products struggle to achieve this same result, and many times they just wouldn’t cut it. This leaves those with a need to humidify large areas with a decision to make on the best humidifier for big room.

The best big room humidifiers or rather the best humidifier for 2000 square feet are able to make a significant impact on the humidity level. Although they pose a risk of being noisier due to their capacity, one could opt for a large room ultrasonic humidifier. Larger room humidifiers come in different types; however, this makes choosing the most cost-efficient and productive device an herculean task.

There are some specific features to look out for in the best humidifier for large rooms, and depending on how large the room is, the most effective way to get the humidity to a safe amount might be to look out for products in the best whole house ultrasonic humidifiers category. On the other hand, one could also tailor the search to their specific room dimension, like the best humidifier for 1000 square feet as an example, since most rooms qualify as big starting from the 1000sqft size.

Do humidifiers work in big rooms?

Humidifiers work, and it does what they say it does, even in large-sized rooms. The primary reason why some might question the effect of a humidifier in larger rooms is that they most times create an unfair pairing. This is simply a vast room, versus inadequate humidification, which obviously would not make a dent on the overall moisture content of the room.

However, when you use an equivalent capacity humidifier for a large room, it raises humidity just fine, as the small ones do in regular-sized spaces.

Types of humidifiers to use in a large room

There are two significant kinds of humidifiers that can be used in large-sized rooms, and it can be either the portable type or the centrally installed or whole house humidifier.

The portable ones include evaporative and ultrasonic, which could be either warm or cool mist option, or sometimes both. While the central humidifiers mostly employ evaporative working principle and are installed with a HAVC system.

  • Ultrasonic humidifier:

They produce mist through the use of ultrasonic vibration that moves at a very high frequency, breaking water into numerous tiny droplets, before it is released into the atmosphere by a blowing fan.

  • Evaporative humidifiers:

This type blows moisture through a filter (mostly wick filters), that already absorbs water, expelling it into the atmosphere as tiny droplets called mists. They are able to expel a large amount of moisture into the air per time.

Ultrasonic or evaporative or whole house humidifier for a big room

The most effective type of humidifier when it comes to raw performance in humidification is the whole house model. However, they are not often purchased due to being very expensive and requiring other fittings for proper installations.

For example, there has to be an already existing duct system in the home, before the thought of purchasing one of these comes to mind, or you purchase the duct system alongside it.

As a result of this, many fall back to both the ultrasonic or evaporative models, and when it comes to choosing between the two, there aren’t many distinctions to pick apart.

The performance of both of these devices is down to their design and inbuilt capacity, and they can both create the cool or warm mist option, as well as use all the available fancy automatic features.

They cost around the same price, too, with only variations as a result of manufacturers’ differences, therefore picking one over the other should be down to specific functions that are tailored to suit your needs.

How to calculate the humidifying space capacity for a large room

The three significant dimensions needed to be taken when doing the math for the humidifying space capacity of a large-sized room is the length, breadth, and width.

These parameters are required for calculating the area in square feet of the room, after which it is easily matched with that of the manufacturer’s recommendation on the device.

For example: if L = 10, B = 5 and H = 10, the area of the room would be 10 x 5 x 10 = 500sqft.

As a result of this, you should purchase a device that can serve up to 800sqft that is slightly higher than your intended space. This is as a result of the fact that manufacturers mostly exaggerate the capacity of a device for more patronage. In the real sense, an 800sqft rated device might not be able to go beyond 600sqft practically.

Top rated humidifiers for large rooms 

1) Vornado Evap40 4-Gallon Evaporative Humidifier 

Special features: signature vortex circulation, 4-gallon water tank capacity, airlock water tank, product dimensions; 10.5 x 19.5 x 13.5 inches, item weight; 9 pounds

Best Humidifier for big room

This is a high capacity humidifier that is built with one purpose only, which is to serve large rooms as big as they get. Built to be very compact, as well as medium-sized dimensions and weight, this device is very portable, and wouldn’t cause headaches on creating space to accommodate it (not that space is a problem in big rooms), and it also has a very high mist creation rate to match.

With a total of two airlock tank capacity of 4 gallons (2 gallons each by the side), this device is able to hold much water for its heavy humidification purposes, and the most impressive thing about this is fact is that in can covert that large volume of water to mist in only 24 hours on the highest settings. Yes, 24 hours. That is just really impressive and makes it a good fit for rooms as large as 1000sqft.

There is also a built-in adjustable thermostat, which makes it possible for users to choose specific humidity level that the machine would work with, and goes off after this target is met. It employs a specially designed signature vortex mist circulation for a more effective way of spreading around the home in a more uniform, complete, and effective way.

The control panel is very easy to use, allowing users to vary fan speeds depending on your choice, and it is able to run for a very long time at lower speeds, hence, having a not so frequent refill rate. It is effortless to use, as well as clean, and its airlock tank design makes it easy to fill, as well as prevent spills and leakages. This whole package is wrapped up in a 5-year warranty, though it is expensive to run, due to a need for purchasing filters very frequently.


  • suitable for large-sized rooms,
  • adjustable humidistat with auto mode,
  • large water tank,
  • high mist output generation,
  • easy to fill with the spill and leak-proof tanks,
  • easy to clean,
  • 5-year warranty


  • costly frequent filter replacement;
  • its design doesn’t maximize the wick filter.

2) AIRCARE 831000 Space-Saver, White Whole House Evaporative Humidifier 

Special features: 6-gallon water tank capacity, Trapmax filter technology, product dimensions; 17.5 x 12.5 x 22.5 inches, item weight; 14pounds, LED display,

Best portable Humidifier for large rooms

This is an excellent humidifier from aircare, which is built for large-sized areas. It comes with a digital panel interface, as well as LED screen, which works with a built-in humidistat in order to measure and display immediate atmospheric humidity levels. This humidistat is also programmable, allowing users to choose specific humidity conditions which the device would keep running till it attains.

Backed up by a 6-gallon water tank, this device has a very impressive runtime of up to 70 hours on the lowest setting, meaning one can run it for days before it needs your attention. The auto-shutoff safety feature has also been built-in, in order to turn off the device when water runs out, preventing damages as a result of overheating from occurring.

There are also built-in indicators on the electronic panel, which turn on LED bulbs accordingly, the first for when there is a need for a filter change, while the other is to call its user’s attention when its refill time. Though the manufacturer’s recommendation is that this device can serve up to 2,400sqft, that isn’t entirely true, as it struggles to do so when tested in that area. It is more suited to around 1000sqft.

The primary disadvantage to this product is its inferior durability. It is designed with a cheap plastic material that lacks any form of strength, such that if it falls from a tabletop, it’s sure to break. If you purchase this, be sure to handle it with the utmost care and do know that its filters are really cheap to replace.


  • suitable for large-sized rooms,
  • long runtime,
  • large water tank,
  • auto-shutoff on an empty water tank,
  • filter change indicator,
  • low water level indicator,
  • adjustable humidistat for auto mode


  • cheap material build rendering it not durable,

3) Elechomes SH8820 Ultrasonic Top Fill Humidifier

Special features: 5.5L water tank capacity, top-fill design, sleep mode, LED display, aromatherapy, product dimension; 10.4 x 7.2 x 12 inches, item weight; 6.3 pounds, dual 360 degrees rotational nozzle, cool design.

Best Humidifier for big room

With excellent looks, as well as awe-inspiring performance that follows, there was no way that we would leave out an elechomes product. It’s very futuristic design ensures that the device is always captivating to behold, especially with the surface blending LED display, which shows humidity level, and control panel being stationed visibly as icons on the front side with soft control buttons.

With the presence of a dual 360 degrees rotational nozzle, this machine supplies mist in all-round direction for optimal performance, while also giving the user more precise control. Sitting deep in the humidifier is a 5.5L water tank, which is pretty extensive, affording the device a runtime of up to 40 hours on the lowest setting, and with a 550ml/h mist output, be sure to get your large room mystified. It is able to serve rooms of up to 755sqft in size.

For more control, the device comes with a remote that allows for togging its settings from quite a distance, though the remote isn’t very sensitive. Its top fill design ensures that users can easily replace water on running out, as well as clean the device easily. The device also has an aromatherapy chamber, where a touch of essential oils can be added to go with an already impressive amount of mist.

This humidifier is, however, quite noisy while operating, which is its major downside. Auto features like the programmable humidistat alongside an auto mode, as well as the timer, isn’t absent; however, with the programmable humidistat allowing users to run select humidity level and allow the device to run independently. A timer is also useful for limiting the number of hours it would run before shutting off.


  • remote control,
  • long runtime,
  • suitable for large-sized rooms,
  • comfortable to fill,
  • adjustable humidistat for auto mode,
  • essential oil compatible,
  • timer feature


  • it is quite noisy while operating,

4) LEVOIT Humidifiers for Large Room Bedroom 

Special features: cool design, digital LED display, 6L water tank capacity, warm and cool mist option, aromatherapy, product dimensions; 11.3 x 7 x 10.5 inches, item weight; 4.92 pounds, dual 360 degrees rotatable mist nozzle,

Best large room Humidifier

This is another device that is up there with the elechomes product in looks and is undoubtedly going to add beauty to the home setting if you are one of those looking for one. With a display LED panel, this device shows humidity levels in the atmosphere, with the help of a humidistat that does the actual measurement. It comes with a completely transparent water tank, which allows easy monitoring, and the electronic soft-touch panel at the front side couldn’t be more convenient to use.

With a dual 360 degrees rotatable mist outlet, this humidifier is able to evenly distribute mist in a circular motion, ensuring every square inch is covered, which allows for more effective humidification in a shorter period of time. There is also a built-in remote control function, which saves the stress of having to walk up to the device every now and then should you need to tingle with a set or two.

Coming to the humidification section, this product offers both warm and cool mist options, making it very relevant in different seasons across the year, while each has a functional output capacity at that. The device can average a mist production of about 500ml per hour (for warm), depending on the type of mist produced, as the cool mist option can only go as far as 300ml. it, however, cannot match the room size capacity of other products reviewed so far.

It also supports aromatherapy, coming with two pads for absorbing essential oils, and being ultrasonic in nature, operates very quietly. Amazing automatic features like the timer for setting work hours, as well as safety features like the auto-shutoff is also present. This makes the device an overall decent humidifier and a good buy in all. The downside of this product is its poor durability, as well as the tendency to leak water on surfaces it is placed on.


  • remote control,
  • large water tank,
  • quiet operation,
  • long runtime,
  • high mist generation rate,
  • timer feature for setting its work duration,
  • easy to clean,
  • essential oil compatible,
  • quiet operation,
  • auto-shutoff on a full tank,


  • tends to leak water on surfaces it is placed on,
  • poor durability,
  • suitable for fairly large rooms

5) MOSFiATA 5L Top Fill Warm and Cool Mist Humidifier 

Special features: 5L water tank, 360 degrees rotatable mist nozzle, an electronic panel with a soft touch and LED display, top-fill design, aromatherapy, warm and cool mist option, product dimensions, 1.2 x 6.7 x 12.8 inches, item weight; 2.87 pounds.

Bes Dehumidifier for large room

With a 5.5L water tank size, this humidifiers runtime falls on the impressive side of 40 hours, though it still leaves a little to be desired. However, with the presence of either a warm or cool mist option to choose from, it affords users flexibility, as well as convenience in temperature across both winter and summertime. the presence of a top fill design makes it pretty easy to fill and also to clean in the long run.

Built for room-sized of up to 800sqft (at least that’s what the manufacturers say), this device is only able to serve moderately sized rooms of about 500sqft practically from experience. This is just borderline shy of the large class. With its remote control feature, however, be sure to save some energy on walking the large room just to toggle settings on the device.

We have to give it to the manufacturers, that this device is just awesome looking too, with a unique design which features a transparent water tank, as well as all black, LED control panel with display, for an enticing overall look. It is also soft touch-controlled and contains the timer feature that is useful for limiting its runtime with much flexibility.

In all, it is a decent device for those on a strict budget, because really it cannot do really much in large areas, but a beast in slightly smaller ones. It also has the aromatherapy chamber for making use of essential oils, adding fragrance, and other health benefits to the atmosphere alongside the mist.


  • large water tank,
  • remote control,
  • timer feature,
  • long runtime,
  • easy to fill,
  • essential oil compatible,


suitable for fairly larges sized rooms,

Features to consider in choosing the Best big room humidifier

  • Capacity:

The capacity of a device is summed up by considering how much volume of water it can convert to mist per hour, as well as the size of the room it is able to serve. This is the essential feature to consider, seeing that we are considering humidifiers for big room category, and any device purchased should be able to do the job it was bought for.

  • Auto mode:

This is a convenience feature, which allows users to run the device automatically, without manually changing fan speeds per time to match atmospheric needs. It is a convenient option to have and would save you a whole lot of stress all throughout the life of the humidifier.

  • Remote control feature:

The most prominent feature of a large-sized room is that it has much space to play around with, this means you would practically need to cover more ground to get to that window, or appliances in it, like the humidifier. It is where the remote control comes in, sparing you the numerous travels to and from your bed to get the humidifier running.

  • Timer:

The timer is useful for work duration flexibility, as well as power management, and is a useful feature for humidifiers, though it is not the most compulsory.

  • Water tank size:

A unit’s water tank size determines to a large extent its runtime, and since large rooms would need more humidity than usual, it would, therefore, be more convenient to have a device with large tanks, that can spare you the stress of regularly having to refill to maintain humidity.

  • Warranty/ Top-fill design:

products with top fill design are generally easier to refill, as well as clean, and coming with any form of warranty protects the customer’s investment, in case of any defects in production.

  • Auto shutoff:

This feature is essential for preventing unforeseen hazards. Humidifiers running on an empty tank causes overheating, which could damage the device, or even start a fire. It is, therefore, necessary that you purchase a product with this, and that shouldn’t be hard, though, as it is a pretty common thing in most humidifiers today.

Conclusion: Best humidifier for 1000 square feet 

Vornado Evap40 4-Gallon Evaporative Humidifier is the top dog for best humidifiers for big rooms, as it fits the bill on all the essential qualities required for effective performance. These include its moisture output rate, as it is able to dry up 4 gallons in just 24 hours, with a well-designed water tank which prevents spills and leakages, and it also possesses the auto mode for functioning independently.

AIRCARE 831000 is another suitable device for increasing humidity in large-sized rooms, though it has to be handled with much care. It comes with the automatic shutoff feature for safety, as well as an auto mode for automatically maintaining humidity content in the air.

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