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8 Best Humidifiers For Large Rooms

Last updated April 7, 2022

This post may contain affiliate links.

Author
Author avatar Danny Ashton

Danny as been writing about air purifiers for 10+ years. He is a major fan of home technology, which makes him the perfect person to test and evaluate products for HouseFresh

Nothing beats sleeping in a lovely, cozy bedroom or being able to relax in a comfy living room after a long, hard day. But if you find that your skin is dry, you have chapped lips, and are constantly thirsty then it’s likely the humidity levels in your home are too low. 

One of the best ways to combat this and make sure you can still enjoy your wind-down routine is to purchase a humidifier as this will increase moisture. Thankfully, we’re here to guide you in your search.

Firstly, it’s important to buy a unit that’s intended for larger rooms. Otherwise, you’ll find that a standard humidifier just won’t cut it and you may have wasted your money. One of the key things to look out for is tank size. You need to make sure that your humidifier has the capacity for at least 1 gallon in its water tank. Equally, large room humidifiers should all be able to cover a minimum of 500 square feet.

As well as thinking about the size of your room, it’s worth considering your budget, too. If you don’t have an excessively large space to fill and would rather not splash out too much then we recommend the Pure Guardian H4810AR humidifier. It’s under $100 and covers up to 600 square feet. But if you have a much bigger room to humidify, the Aprilaire 400M Humidifier is ideal. As the name suggests, it’s suitable for entire homes and covers up to 4,000 square feet.

As part of our search for the best humidifiers for large rooms, we used consumer reports analysis to remove any fake reviews. All our recommendations came from genuine people like you who have used these models, so you can be sure to trust our advice.

Humidifier
Best High-End Option
PureGuardian H4810AR Ultrasonic Warm and Cool Mist Humidifier for Bedrooms, Quiet, Filter-Free, 120 Hr, 2 Gal Treated Tank Surface Resists Mold, Pure Guardian Humidifier with Essential Oil Tray
AIRCARE Digital Whole-House Pedestal-Style Evaporative Humidifier (Espresso)
Aprilaire 400M Whole Home Humidifier, Manual Water Saver Furnace Humidifier, Large Capacity Whole House Humidifier for Homes up to 4,000 Sq. Ft., white
Pros
This unit comes with an aromatherapy tray which adds an extra feature to this humidifier
Comes with a Check Filter Function to notify you when the filter needs to be changed
It has indicators to let users know its operational status
Cons
We wish the unit also came with a dust filter rather than it needing to be purchased separately
We would like to see remote control functionality
This humidifier does require mounting on an HVAC unit
Tank Size
2 gallons
3.5 gallon
17 gallons
Room Size Suitability
600 sq. ft
2400 sq. ft
4000 sq. ft
Special Features
Warm and cool mist mode
9 different fan speeds
Conserves water by using a unique evaporation process
Weight
5.55 lbs
27 lbs
8.75 lbs
Price
$99.99
$179.99
$176.00
Best Budget Option
PureGuardian H4810AR Ultrasonic Warm and Cool Mist Humidifier for Bedrooms, Quiet, Filter-Free, 120 Hr, 2 Gal Treated Tank Surface Resists Mold, Pure Guardian Humidifier with Essential Oil Tray
Pros
This unit comes with an aromatherapy tray which adds an extra feature to this humidifier
Cons
We wish the unit also came with a dust filter rather than it needing to be purchased separately
Tank Size
2 gallons
Room Size Suitability
600 sq. ft
Special Features
Warm and cool mist mode
Weight
5.55 lbs
More information
Price
$99.99
Best Mid-range Option
AIRCARE Digital Whole-House Pedestal-Style Evaporative Humidifier (Espresso)
Pros
Comes with a Check Filter Function to notify you when the filter needs to be changed
Cons
We would like to see remote control functionality
Tank Size
3.5 gallon
Room Size Suitability
2400 sq. ft
Special Features
9 different fan speeds
Weight
27 lbs
More information
Price
$179.99
Best High-End Option
Aprilaire 400M Whole Home Humidifier, Manual Water Saver Furnace Humidifier, Large Capacity Whole House Humidifier for Homes up to 4,000 Sq. Ft., white
Pros
It has indicators to let users know its operational status
Cons
This humidifier does require mounting on an HVAC unit
Tank Size
17 gallons
Room Size Suitability
4000 sq. ft
Special Features
Conserves water by using a unique evaporation process
Weight
8.75 lbs
More information
Price
$176.00

Last update on 2022-08-10 / Affiliate links / Images from Amazon Product Advertising API

1. Aprilaire 400M Humidifier

The Aprilaire 400M stands out amongst the crowd thanks to its supreme water-conserving functionality. Humidifiers generally consume quite a bit of water, which can result in users having to choose between comfortable air and a high water bill. The 400M gets rid of this compromise by using a unique evaporative technique that negates the use of floor drains, thereby efficiently maximizing water supply.

The 400M is a great humidifier for large rooms as it provides a lot of coverage for its relatively smaller size. Approximately 17 gallons of moisture per day is emitted by the Aprilaire 400M, which ensures your entire space gets all the humidity it requires for comfortable breathing and good health.

You can get the 400M in automatic and manual variants, with the automatic version requiring one initial setup. It also comes with both indoor and outdoor sensors to detect internal and external humidity. This helps it aggregate the output to optimal levels.

The manual variant of the 400M humidifier comes with one inbuilt indoor humidity sensor in proportion to the settings used. When you turn the unit on, all that is required is for you to set your desired humidity level.

  • Tank Size: 17 gallons
  • Room Size Suitability: 4,000 sq. ft
  • Weight: 8.75 lbs
  • Special Features: Conserves water by using a unique evaporation process

What we love

  • Its unique design helps to preserve indoor plants and furniture
  • It can cover a space of up to 4000 square feet, a large output for its size
  • This unit comes in both automatic and manual variants
  • It has indicators to let users know its operational status without any guesswork

We don't like this as much

  • This humidifier does require mounting on an HVAC unit
  • The automatic variant requires you to change the water panels at least twice a year

2. AIRCARE Digital Evaporative Humidifier

The AirCare EP9 perfectly suited for large rooms due to its coverage area. It’s important to note that while it weighs just 27 pounds and has a pedestal-style design, the humidifying power it has should not be understated. It’s Refilling isn’t a chore as it comes with a front fill door, ensuring you can use a pitcher to fill the unit to an appropriate level.

Apart from having great looks, it achieves efficiently by providing more than adequate humidification. The AirCare EP9 has been created to effectively humidify large areas measuring up to 2,400 square feet.

Accurately setting the humidity levels to your preference is easy thanks to the digital controls on this unit. To this end, you can alter the fan speed as well as the humidity using the digital control panel. Ensuring a room is perfectly humid is quite easy as there is a digital humidistat that automatically maintains your preference using digital accuracy.

  • Tank Size: 3.5 gallons
  • Room Size Suitability: 2,400 sq. ft
  • Weight: 27 Pounds
  • Special Features: 9 different fan speeds

What we love

  • This unit provides you with 9 fan speeds making it easier for you to achieve your desired humidity level
  • There is an auto-shutoff feature that switches the unit to auto dry mode when the water level is low
  • Maintenance is quite easy with this unit and is made even easier with the digital notification
  • The unit comes with a Check Filter Function to notify you when the filter needs to be changed

We don't like this as much

  • The humidifier does greater amounts of noise when operated on the higher fan settings
  • We would like to see remote control functionality

3. LACIDOLL Top Fill Large Humidifier

This humidifier from Lacidoll comes with a large 2.1 gallon tank and 360-degree adjustable nozzles. It offers a coverage area of up to 500 square feet but users don’t have to worry about refilling the tank frequently, as each refill lasts up to 48 hours with continuous operation.

Its size and range ensure that it can be used as a baby humidifier, in the bedroom, as an indoor plant humidifier, or even in any large room during sleep. The top-fill design makes this Lacidoll unit easy to refilled and the water tank has a secure inbuilt handle to ensure detachability is seamless. The water tank also has an extra-wide opening which makes cleaning easier.

The Lacidoll is a smart humidifier as it comes with an inbuilt intelligent sensor. This ensures your humidity levels are automatically maintained. Adjusting the humidifying speed is seamless with three settings to choose from and if the unit falls over or is out of water, the automatic shutoff safeguard feature kicks in to protect you. The display of features and the new silent noise levels ensure that you can place this humidifier in your large bedroom through the night and not have your sleep negatively impacted.

  • Tank Size: 2.1 gallons
  • Room Size Suitability: 500 sq. ft
  • Weight: 5.5 pounds
  • Special Features: Automatic shut off feature

What we love

  • This unit has the ability to effectively maintain up to 90% relative humidity
  • The Lacidoll provides you with 3 preset options to select from
  • The built-in sensor ensures that you get improved efficiency
  • Features automatic operation, meaning you just have to set the unit up once and the settings will be stored

We don't like this as much

  • While the tank might be adequate for some, other users might prefer a larger capacity
  • Inbuilt sensor requires extra care when cleaning

4. Air Innovations MH-701BA Digital Humidifier

The Air Innovations MH-701BA is a broad limit humidifier that comes with a water tank capacity of 1.7 gallons and is capable of running up to 96 hours on a full tank. It is a great choice to humidify large rooms as it has a coverage area of up to 600 square feet. Additionally, the MH-701BA is a cool-mist ultrasonic humidifier that operates exceptionally quietly.

This unit doesn’t require much maintenance due to its lack of earthenware filters. What this means is that you don’t have to worry about replacing its filters. Furthermore, this unit comes with 5 mist settings that can be altered seamlessly to your desired specifications. The water tank is counter microbial, ensuring that any microbes are repelled effectively.

The design of the MH-701BA is also adaptable thanks to the fact that it can be transformed from a table humidifier to a tower unit. Its humidistat ensures that humidity levels are left unchanged during operation. A unique feature of this design is that it has an adjustable nozzle that lets you provide humidity exactly where you need it. Lastly, this humidifier from Air Innovations features a humidistat that ensures your desired humidity level is achieved and maintained while the unit is operational.

  • Tank Size: 1.7 gallons
  • Room Size Suitability: 600 sq. ft
  • Weight: 3.83 pounds
  • Special Features: Turning spout, 5 mist settings, timer

What we love

  • It has an extremely long run time compared to its tank capacity
  • Noise levels during operation are a lot lower than some other humidifiers
  • Easy to assemble and set up for operation
  • Able to be adapted between two different designs (tower to table)

We don't like this as much

  • The ability to fill this unit from the top would be a plus
  • We wish there was an external indicator of the water level in the reservoir

5. LEVOIT Humidifier

The LEVOIT Humidifier is perhaps one of the most affordable large room humidifiers one can purchase on the market at the moment. Its design excellently combines a 1.59-gallon tank with a coverage area of 735 square feet, making it one of the most efficient large room humidifiers out there.

It has been manufactured to provide an efficient supply of both cool and hot-mist for your space depending on your preference. Thanks to its dual output, this humidifier is one that can be used both during the winter and the summer. This unit comes with an inbuilt humidity sensor as well as automatic operation. There is also an automatic shutoff feature that shuts down the unit when not required. This makes it perfect for users looking for a humidifier with ultimate energy savings.

The LEVOIT Humidifier has an output speed of 500 mL per hour which is great for a unit designed to be compact. A full reservoir is capable of offering continuous operation for about 60 hours, which cuts down on how many times you need to refill it per week. Also included is a remote control that lets you create a schedule ranging from 1 to 12 hours.

  • Tank Size: 1.59 gallons
  • Room Size Suitability: 753 sq. ft
  • Weight: 5.3 pounds
  • Special Features: Cool and warm-mist mode

What we love

  • Able to manually adjust desired humidity levels
  • The design of this unit is not only beautiful but functional and adaptable
  • Very quiet operation
  • The unit comes with an aroma box that houses essential oils

We don't like this as much

  • Does require relatively frequent cleaning
  • We wish the reservoir capacity was slightly larger

6. Elechomes SH8820 Humidifier

One handy feature the Elechomes SH8820 humidifier offers is its user-friendly top-filling tank. This design means that you don’t have to worry about disassembling the humidifier just to fill the tank, making it a lot more ergonomic and convenient. The SH8820 has been designed for a large room with its 5.5-liter water tank. You don’t have to worry about constantly refilling this humidifier’s tank during constant usage. This unit has an output of 600ml/h with a coverage of up to 755 square feet.

Not only is it perfect for any large space such as the living room, but it also is a great addition for the master bedroom as it utilizes advanced ultrasonic mist technology which ensures it only produces 20 to 32 dB of noise during operation. You can also enjoy a restful night thanks to its screen-off setting.

  • Tank Size: 1.2 gallons
  • Room Size Suitability: 755 sq. ft
  • Weight: 8.18 pounds
  • Special Features: Warm mist technology

What we love

  • It comes with an inbuilt humidity checker to ensure that levels are never exceeded or dropped
  • The unit has a child lock system to ensure that it cannot be tampered with by kids during operation
  • There is a section on the unit for essential oils or aromatherapy
  • It provides cool and warm-mist ensuring that it can function effectively in both cold and warm seasons

We don't like this as much

  • The sleep mode has a lower output compared to other units
  • The unit is relatively heavy for its size and capacity

7. Pure Guardian H4810AR Ultrasonic Warm and Cool Mist Humidifier

The PureGuardian H4810AR humidifier comes with perhaps the longest-lasting power combined with coverage of all PureGuardian humidifiers. This reason alone makes it one of the best humidifiers for large rooms and spaces. This unit weighs 5.55 pounds and comes with a 2-gallon tank. These metrics mean that you can operate your humidifier for 120 hours at a time in spaces as large as 600 square feet.

When it comes to speed, you can select from 3 settings on this unit. The speed you select correlates with how often the tank needs to be refilled. You also have the option of cool mist or warm mist output to suit the weather and your preference.

Thanks to the ultrasonic technology included in the H4810AR, you can be sure that your sleep won’t be disrupted if you place it in your large bedroom. This unit is equipped with various features such as an LED night light, a dual mist rotating nozzle that lets you direct the mist, and a low water indicator light that ensures you are kept on top of refilling.

  • Tank Size: 2 gallons
  • Room Size Suitability: 600 sq. ft
  • Weight: 5.55 pounds
  • Special Features: Warm and cool mist mode, aromatherapy box

What we love

  • This unit comes with an aromatherapy tray which adds an extra feature to this humidifier
  • You get a lot of coverage from this humidifier, the most of any PureGuardian humidifier
  • For the coverage size, the unit is very lightweight
  • Operates quietly and is perfect for bedroom use

We don't like this as much

  • We wish the unit also came with a dust filter rather than it needing to be purchased separately
  • This unit doesn’t come with its own remote control to make operation a bit easier

8. Everlasting Comfort Cool Mist Humidifier

The Everlasting Comfort Cool Mist Humidifier provides long-lasting comfort and coverage for any large space, be it a home, nursery, office, or dorm. The unit is an ultrasonic humidifier that comes with a 1.6-gallon tank and offers a coverage area of up to 500 square feet. While the tank isn’t at all large, it is capable of operating for 50 continuous hours. 

The unit also offers an aromatherapy oil trail to circulate essential oils into the mist, providing you with a fresh and pure aroma all around your space. Not only does the humidifier last for 50 hours, but it is also quiet as it does so. At its highest setting, it produces a noise output of less than 30dB. 

It comes with an automatic shutoff feature once the tank is empty. This large room humidifier is filterless and that means you don’t have to worry about filter replacements or the costs associated. This makes it a great humidifier for just about any large space.

  • Tank Size: 1.6 gallons
  • Room Size Suitability: 500 sq. ft
  • Weight: 3.1 pounds
  • Special Features: Whisper quiet

What we love

  • Its futuristic design is perfect for the modern home
  • It comes with a light indicator that provides information on the status of the humidifier.
  • The essential oil tray is a great additional feature that most humidifiers don’t have
  • You can achieve 50 hours of continuous use from this humidifier

We don't like this as much

  • We wish the unit could be refilled from the top
  • The addition of a handle to the reservoir would make for easier transportation

FAQs about Humidifiers For Large Rooms

What specifications are required in a humidifier for large rooms?

When trying to find a humidifier for a large room, you’ll first need to consider the size of the water reservoir. That being said, you cannot consider just the tank capacity in isolation. You should also consider the coverage area the humidifier serves. Humidifiers created for large rooms tend to have a coverage area of at least 500 square feet. You also want to take into consideration how long the humidifier can operate before running out of water. Ideally, the longer the better.

Why is it important to keep your humidifier clean?

The purpose of a humidifier is to keep your space at the right level of humidity and of course, provide you with clean air. When you don’t clean your humidifier, you run the risk of creating a breeding ground for spores and microbes in the tank and the filter, if your humidifier has one.

Just as with any appliance, if you don’t regularly clean it, you run the risk of having it fail or need to be repaired. Without correct cleaning and disinfection, the water in the humidifier will stagnate and when that water is released into the air, you could end up breathing in that bad water that can contaminate the quality of the air indoors.

Can I use tap water in the humidifier?

Under regular conditions, you should be able to use tap water in your humidifier with no adverse effects. Nevertheless, putting tap water in your humidifier’s tank may cause you to notice some undesirable side effects. You may have fine white dust spraying amongst the cool mist vapor. If this happens to your humidifier, then it means you have hard water. 

The white dust happens as a result of heating and cooling of the water when released as a vapor. While this isn’t harmful to your health, it can become quite annoying when it starts collecting on your furniture. Some users tend to prefer putting distilled or purified water in their humidifiers. Some users tend to prefer putting distilled or purified water in their humidifiers.

Which Humidifier is best for you? 

A large room humidifier can be the solution to quite a lot of issues you might be facing when it comes to the quality of air in your home. Dry air can create quite a lot of issues such as damage to hair, dry skin, itching, and other severe issues, especially during the summer. These issues can become a lot more frequent if you use a heating system that takes out the moisture from the air.

The most effective way to achieve an ideal level of humidity in your large room is to identify the features you value most, such as reservoir size and output. A larger reservoir size will mean that you will not have to refill it as frequently, which may be important to you if you have an already packed schedule. Alternatively, a quiet operation may be more desirable if you are planning to operate the unit in a large bedroom.