Top 6 Humidifier for Large Room in 2022

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Large room humidifiers were once the most popular size on the market. As technology advance and systems became more efficient, the sizes and capacity of humidifiers dropped. With that in mind, there is still a niche for machines that can cover a lot of square footage, and we are going to highlight some of the top models in this guide.

The Best Humidifiers for Large Rooms

To find the best humidifier for a large room, we send our team of experts on an exhaustive search. After looking at dozens of brands and close to 60 humidifiers, we came up with a shortlist of six machines that stand apart from the rest. While everyone’s definition of a “large” room varies, the humidifiers we chose can handle areas from 500 to over 2,000 square feet in size.


Pure Enrichment MistAire XL

  • Type: Ultrasonic
  • Mist: Cool
  • Capacity: 1-gallon
  • Speeds: Variable
  • Coverage: 500 sq. ft.
  • Warranty: 5 years


  • Type: Ultrasonic
  • Mist: 2-in-1
  • Capacity: 1.5 gallons
  • Speeds: 3
  • Coverage: 753 sq. ft.
  • Warranty: 1-year


  • Type: Console
  • Mist: Cool
  • Capacity: 2.5 gallons
  • Speeds: 3
  • Coverage: 2,600 sq. ft.
  • Warranty: 2 years

PureGuardian H7550

  • Type: Ultrasonic
  • Mist: 2-in-1
  • Capacity: 1.3 gallons
  • Speeds: 3
  • Coverage: 570 sq. ft.
  • Warranty: 3 years


  • Type: Airwasher
  • Mist: Cool
  • Capacity: 2.6 gallons
  • Speeds: 3
  • Coverage: 800 sq. ft.
  • Warranty: 10-year

AIRCARE D46 720 Tower

  • Type: Evaporative
  • Mist: Col
  • Capacity: 2 gallons
  • Speeds: 4
  • Coverage: 1,200 sq. ft.
  • Warranty: 2 years

#1 Pure Enrichment MistAire XL

Pure Enrichment MistAire XL

Humidifiers that sit on a countertop or nightstand are the most popular style with many homeowners but aren’t necessarily designed to deal with large rooms. The MistAire XL from Pure Enrichment is an exception to the rule and a budget-friendly system that will look great in any space.

With a 1-gallon tank and a coverage range of 500 square feet, this system is the smallest humidifier on our list in terms of capacity and size. It measures 12.2”H x 9”D x 6.5”W and weighs less than 3 pounds unfilled. It won’t take up much space and can run between 10 to 24 hours before the tank runs dry. It’s a wide range, but that’s because the MistAire XL has a variable speed dial.

An automatic shutoff feature is included on this system and will activate when the tank is dry or has been removed. It has also has a nightlight that allows you to choose between Blue, Green, or Red. There are no timers or flagship features on this machine, but it does come with a single and dual-mist nozzle. They are interchangeable and rotate 360 degrees so that you can adjust the direction of the mist.

There are ultrasonic systems with more features or a better coverage range, but the Pure Enrichment XL impressed us with its performance and price. Maintaining this model is an absolute breeze, and homeowners found it quiet, which makes it suitable for large bedrooms as well. This humidifier comes with a 5-year guarantee from Pure Enrichment.

Pros: Affordable humidifier with variable mist control and built-in nightlight. Rotating nozzle system and a 5-year guarantee.

Cons: None

#2 LEVOIT LV600HH Large Room Ultrasonic Humidifier


Millions of homeowners in the United States turn towards warm mist humidifiers in the winter only to put them into storage when summer comes around. With a 2-in-1 humidifier like the LEVOIT LV600HH, that will never be an issue as it allows you to choose from warm or cool mist.

The LV600H is designed to be used at any time of the year regardless of the climate in your region. There are multiple fans speeds whether you choose the warm or cool mist function. It has a runtime between 20 to 36 hours based on the mist level selected and a 1.5-gallon water tank. As it’s an ultrasonic system, it won’t keep you awake at night, and the display is dimmable as well.

You can control this humidifier through touch-based buttons set around the display or with a remote control. It has an automatic shutoff feature to go along with a 12-hour timer and an automatic mode. As a bonus, there is an aromatherapy feature with a pad that allows you to use your own essential oils. It’s not a top-fill system, but consumers found the tank easy to fill and clean.

While there are dozens of hybrid 2-in-1 humidifiers on the market, the LV600HH stands out. The ability to get warm or cool mist from this humidifier is the obvious draw, but it’s hard to argue with the price and a solid range of features. That said, we would have liked to have seen a longer warranty on this humidifier, but an extended guarantee is always an option.

Pros: Quiet ultrasonic humidifier that produces warm or cool mist. Modern design with a 12-hour timer, remote, and aromatherapy tray. A runtime of up to 36 hours. 

Cons: Short 1-year warranty.

#3 AIRCARE MA0800 Digital Whole-House Humidifier


Not every humidifier needs cutting-edge features or a slick design that puts it on the level of systems from Dyson. Well, if you care more about performance than a humidifier blending in with your décor, the AIRCARE MA0800 whole house humidifier is a machine you’ll want to consider.

The MA0800 isn’t as sleek as some of the other systems from AIRCARE, but it’s compact at 16.5”H x 12”D x 18”W with a simple design. It’s also lightweight at 8.5 pounds unfilled. This humidifier has a small digital display, and the controls are just as simple as the design. There are only three buttons on this system, but there are indicators that tell you when to check the filter or fill the tank.

This digital humidistat allows you to adjust the humidity level, and the motor has three speeds. The AIRCARE MA0800 is equipped with a large 2.5-gallon easy-fill water bottle, which gives it an output rating of up to 8.2 gallons per day depending on the settings. It’s capable of running for up to 36 hours and is ideal for rooms between 1,000 to 2,600 square feet.

Homeowners found the AIRCARE MA0800 extremely easy to use and maintain. It’s efficient with a range that should cover even the largest of rooms, considering the average home tends to be around 2,000 square feet. Replacement filters are pricey compared to other machines of this size, but there are less expensive third-party options available.

Pros: Efficient humidifier that’s easy to maintain. Capable of covering areas up to 2,600 square feet with an excellent output rate and large water tank.

Cons: Lack of features compared to smaller systems.

#4 PureGuardian H7550 Warm Mist Humidifier with Humidistat

PureGuardian H7550

When you don’t like to deal with refilling tanks or need a humidifier to operate for an extended period of time, runtime is the first specification to consider. PureGuardian’s H7550 has the longest runtime of any system on our list, but that’s far from the only feature that makes this humidifier worthwhile.

The H7550 is another 2-in-1 humidifier that produces cold or warm air. While it can’t cover as much ground as the LEVOIT LV600HH, it’s rated for rooms up to 570 square feet and has a 1.32-gallon tank. Like most humidifiers, it has three mist levels, and you can get up to 90 hours of runtime from this unit before needing to top of the tank.

Ease of use is high on this system with digital controls, a humidistat, and SilverClean protection. This helps to keep bacteria and mold from spreading throughout the tank, but also makes it easier to clean. Other features of interest include a 12-hour timer, nightlight, extension wand, and the company’s SmartMist sensor, which can automatically adjust the output.

From the extended runtime to the PureGuardian H7550’s dual-mist capabilities, there are a lot of reasons this system stands out among the rest. Some consumers felt this ultrasonic humidifier could be a little easier to clean, but it performs as advertised and has a nice array of features across the board. The H7550 is backed by a 3-year warranty from PureGuardian.

Pros: Produces warm or cool mist with up to 90 hours of operating time. An extension wand, 12-hour timer, and digital humidistat.

Cons: More expensive than comparable models, small tank opening.

#5 Venta LW45 Airwasher


When shopping for the best humidifier for large rooms, you’re going to notice a lot of manufacturers with 2-in-1 machines. We’ve featured several on our list, but there is more than one type of hybrid humidifier. The Venta LW45 can’t produce warm mist, but it can purify your air while humidifying a room.

Looks can be deceiving, and that’s the case with the LW45. This nondescript humidifier looks like a large plastic box with some venting and an electronic control panel on the top. As it’s a top-fill system, you can carry a pitcher of water to the machine instead of removing tanks or taking it to the sink. While simple, Venta certainly kept ease of use in mind with the LW45.

The Venta LW45 can hold 3 gallons of water and has three motor speeds. It’s quiet on at every level with a decibel range of 24 – 45 dB. There is a built-in aromatherapy feature as well, but not many other features aside from a low water indicator and automatic shutoff. This humidifier doesn’t use filters but does rely on the companies Disc Stick system.

Venta designed this system to humidify an area up to 800 square feet, but it can also remove things like pollen, dust, and bacteria from the air. Two moist discs rotate inside the humidifier and catch particles, so that only clean, moisturized air is blown into the room. The disc surface is double the size found on the company’s LW25 systems and triple that of the Venta LW15.

If you are concerned about bacteria or other contaminants in your home or those potentially caused by a humidifier, the LW45 is an interesting alternative. While not nearly as feature-packed as similar systems, it gets the job done and has a top-tier warranty that clocks in at 10 years. The Venta LW25 is also an option with a range of 400 square feet if you need something slightly smaller and cheaper. 

Pros: Purifiers and humidifies the air in a room. Low noise levels, aromatherapy feature, and a 10-year warranty.

Cons: The price tag.

#6 AIRCARE Evaporative Tower Humidifier

AIRCARE D46 720 Tower

Our second option from AIRCARE is a bit different from the first in both terms of style and performance. The AIRCARE D46 720 is a humidifier disguised as a tower fan, and a unique alternative to traditional systems if you need a machine for an area up to 1,200 square feet.

While you won’t mistake the D46 720 Tower for a humidifier at first glance, it certainly performs like one. This evaporative humidifier has two of the company’s large Super Wick filters in the bottom and dual removable water tanks inside the base. Those tanks can hold a total of 2 gallons of water, which gives this humidifier a runtime of up to 50 hours per filling.

The output range for this humidifier is listed at 6 gallons per day, depending on the mist level. There are four of them, which you can control through a small digital display on top of the machine. It doesn’t have many features, but the digital humidistat gives you fine control over the levels. There are also notification reminders for the water tank and filter to go along with an automatic shutoff feature.

The AIRCAR D47 70 Tower Humidifier initially caught our eye because of its style, but we were impressed with the specifications once we took a closer look at the machine. We like the dual-tank system and extended runtime, even if it’s a little light on features for the price. Some consumers found it noisy on high, however, and felt it could be easier to fill. This system is backed by a 2-year warranty from Essick Air.

Pros: High mist dispersion and excellent runtime of up to 50 hours. Dual water tanks, high output rate, and digital humidistat.

Cons: Can be noisy on high. Some homeowners had trouble with the tank.

How to find the Best Humidifier for a Large Room

While it can be easy to find a humidifier for small rooms, desktops, and various other areas, choosing a solid machine for large rooms can be tough. That’s partly because people have different definitions when it comes to the size of a room.

Manufacturers may have a coverage range of 1,000 square feet and call that large, while others may classify that as 500 square feet.  There are also several other factors to consider as well, like capacity, runtime, and the style of the humidifier.

What type of room do you need a humidifier for?

Before we talk about coverage, it’s a good idea to take a minute and think about where you plan to place your new humidifier. While there are a few rules every manufacturer recommends when it comes to humidifier, place type of room can also have an impact on the style of humidifier you purchase.

Do you plan on having the humidifier out in the open or discreetly tucked near a corner of a room? That can make a difference, and so can the size of the machine itself. Smaller humidifiers are usually easier on the eyes than whole-house or console humidifiers. You can set them on a tabletop, whereas other machines are relegated to the floor.

Another overlooked area with placement comes into play when it’s time to fill your humidifier. Top-fill systems with fixed tanks can be unwieldy to carry to the sink, and carrying pitchers full of water through the house is not ideal. If you plan on using the humidifier in a room that’s far from the faucet, consider the weight and how it’s filled.

Types of Humidifiers

You can buy a humidifier for the winter months or quiet systems built for nurseries as there are no shortage of options. All humidifiers typically fall into one of two categories, however. While there are variations of both styles, which you can read more about in our guide, but we’re just going to evaporative and ultrasonic humidifiers.


An evaporative humidifier can take on a variety of forms, but all have a fan and water tank. Most of these machines use wick filters that draw water from the tank. The fan blows evaporated mist through a vent into your household, and most systems have between 1 – 3 speeds or mist levels.

There aren’t many moving parts with cool mist evaporative humidifiers, which tends to make them inexpensive compared to ultrasonic machines. You’ll also find more systems, larger water tanks, and a broader range of coverage.


Ultrasonic humidifiers are somewhat limited in terms of capacity, but they are quieter and can be considerably smaller than an evaporate system of the same capacity. These machines use ultrasonic vibrations to turn water into a fine mist, and you can find dozens of ultrasonic humidifiers that can produce both warm and cool mist.

The upfront price on these systems is higher, although they can be cheaper to maintain over time. There are also more high-tech features on ultrasonic humidifiers than you’ll find on machines in the evaporative class.

Ease of Use

Ease of use is an overlooked factor and one that could mean disaster when it’s time to perform routine maintenance on your machine. Humidifiers are designed to be simple to use, but some systems handle things better by design.

Controls should be easy to access and large enough to see. Water tanks should also be simple to remove, refill, and replace. Plan on taking your humidifier on the road? Pay close attention to the cord length along with the weight and how it breaks down.

This is an area where you will want to think about maintenance as well. A similar process is used for both evaporative and ultrasonic humidifiers, but some systems are incredibly easy to clean. We’ve seen others that will have you considering a replacement or the trash bin after the first cleaning.

Humidifier Capacity 

You may not be able to find an output rating for every humidifier, but you will find a rating for its capacity. That refers to how much water it can hold before the tank needs refilling. As mentioned, evaporative humidifiers typically have larger tanks, but evaporative humidifiers have grown larger in recent years.

Before you think about looking for a humidifier with a massive water tank, consider how it’s filled and where it will be placed. Carrying jugs full of water through half of your home isn’t ideal, but could be the best option if you choose a top-fill humidifier. They are certainly easy to fill, but you’ll need to take them to the faucet or bring water to the machine.

Humidifiers that have a removable tank are far more common regardless of the style or size. Having a tank that you can carry to the faucet can make life easy, but may not be a factor unless you’re using the system daily. Consider the weight of water as well if you’re looking at larger tanks on an evaporative humidifier.

Operating Time

Humidifier capacity has a great deal to do with operating time, but so does the overall efficiency of the machine. Simply put, operating time is how long a humidifier can run between refilling and can vary from a few hours to several days.

There are a number of humidifiers that offer to provide 60 hours or more operating time from a single tank of water. While that is impressive, that number is tied to the speed or mist level. The higher the speed, the lower the runtime, so look for an operating range with a high and low number if possible.


Humidifier features often depend on the price and style, but some manufactures have patented techniques or designs that they are known for. You can find water tanks and bases coated with antimicrobial technology from several companies, and automatic shutoff is a feature found on over 70% of humidifiers on the market.

Notification lights for the water tank and filters are also common. While handy, some are quite bright, so it’s always a good idea to look for humidifiers with a night mode or dimmable display. Timers are another feature to keep an eye out for, and most companies have comparable models with a choice of analog or digital controls.

Some premium humidifier features include systems that can sync to a smartphone wirelessly and UV-C filtration. Digital humidistats and aromatherapy trays can raise the price as well. Other features of interest include variable mist controls, nightlights, cleaning modes, and pre-filters.

Humidifier FAQ

Q: Is it safe to sleep with a humidifier on?

A: Sleeping with a humidifier is perfectly fine, and many homeowners buy them for this purpose. Some systems have also have built-in sleep modes to keep things quiet or nightlights.

Q: What does humidifier output mean?

A: Humidifier output refers to how much moisture a system can produce in a day. It’s an important number when considering the room size, but a specification that can be challenging to find with some manufacturers.

Q: Can I use a humidifier and air purifier in the same room?

A: Yes, although an air washer is a 2-in-1 system that humidifies and cleans your air.

Q: What is the ideal humidity level indoors?

A: It depends on several factors, but a range between 30% to 50% is highly recommended.

Q: Which humidifiers are the quietest?

A: Most homeowners find ultrasonic humidifiers to be the quietest, and they are sold as both cool and warm mist systems.

Written by

Rene has worked 10 years in the HVAC field and now is the Senior Comfort Specialist for PICKHVAC. He holds an HVAC associate degree from Lone Star College and EPA & R-410A Certifications.

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