5 Best Humidifiers for Large Rooms — Reviews and Buying Guide

30 Models Considered
60 Hours of Research
9 Experts Interviewed
138 Reviews Analyzed

In winter, the air doesn’t contain very much moisture, especially when you’re running a furnace to keep your home warm. Air conditioners in summer can also decrease the humidity level. To replace the lost moisture in your home, you can use the best humidifier for a large room. Humidified air has health benefits as well, reducing coughs, sinus problems, and even asthma symptoms. You need to find the right one for the room you intend to use it in, to be sure it will work at its peak performance.

When choosing your new humidifier, there are a few features to look for to ensure it’s the right one for your home. The coverage area is probably the most important here. In a room smaller than the humidifier’s coverage area the machine can lead to mold and mildew. In a room that’s too big, the unit will just not humidify the air to the desired level. The tank capacity tells you how much water the unit can hold before needing to be refilled. How long the machine runs before a refill is necessary is also important, so you can time it right to keep your room at the optimal moisture levels. If it has a filter, this will need to be cleaned or replaced at specific times, so check if one is included.

Top 5 Humidifiers for Large Rooms Review 2019

To help you find the best humidifier for a large room, we spent countless hours checking out manufacturer’s information, reading customer reviews, and testing out the top models. Then we created a comparison guide, including in-depth reviews, and added a buying guide to help you choose the right model for your home.

Name and Features Image Rating Price
1. Vornado Evap40 (Editor’s Choice)
This double-tanked humidifier can hold a whopping four gallons allowing you to enjoy the continuous humidification for up to 24 hours on one refill in areas of up to 1,000 square feet
Vornado Evap40
2. Levoit LV600HH (Best Warm and Cool Mist Humidifier for Large Living Room)
This hi-tech device boasts whisper-quiet operation, a remote control function, and a separate compartment for your favorite essential oils
Levoit LV600HH
3. OPOLAR Digital Humidifier (Budget Pick)
A stylish humidifier with a built-in humidistat; shuts down automatically when the desired humidity level is reached
OPOLAR Digital Humidifier
4. Honeywell Cool Moisture Console Humidifier (Largest Coverage Area)
A reliable unit from the trusted manufacturer; can be used in huge spaces of up to 2,300 square feet
Honeywell Cool Moisture Console Humidifier
5. Venta LW25 Airwasher 2-in-1 Humidifier and Air Purifier (Best Large Room Humidifier and Air Cleaner Combo for Allergies)
This device will not only add humidity to your room but also purify its air thanks to the moistened Disc Stacks rotating inside the machine
Venta LW25 Airwasher 2-in-1 Humidifier and Air Purifier
Features
  • Coverage area: up to 1,000 sq. ft.
  • Water tank capacity: 4 gal.
  • Runtime: up to 24 hours
  • Filter: yes
  • Essential oils compatible: no
  • Warranty: 5-year limited

More features: three speed settings; built-in humidistat; leak-free water tanks

OVERALL RATING: 9.9 out of 10

If you have quite a large room that is in need of some moisture, this may be the best humidifier model for you. It has a vast coverage area of 1000 square feet, so fits in most bedrooms, living rooms, or kitchens. There are two two-gallon tanks, one on each side of the humidifier resulting in up to 24 hours of continuous runtime. This means you won’t have to fill those tanks every now and again.

Another benefit of these large tanks is that they are easy to fill from the tap or with filtered water. They have an airlock feature that eliminates spills and leaks, so you never have to worry about cleaning up any messes as your humidifier runs.

The controls include an On/Off button and two dials. One of these allows you to choose one of the three speed settings, while the other lets you adjust the humidity level. The Vornado Evap40 has a signature Vortex Action, which uses deep pitch blades to pull in the maximum amount of dry air, add moisture to it, and then circulates the humidified air throughout the room.

This may also be the best evaporative humidifier for a large room, thanks to the replaceable wick, which naturally humidifies the air pulled in through the fan. This adds the proper amount of moisture to the area, instead of shooting out over-humidified air and soaking nearby surfaces.

PROS:
  • Large coverage area and tank capacity
  • Adjustable humidistat
  • Spill and leak-proof airlock tanks
  • 3 mist speeds

CONS:
  • Filters and fan need to be cleaned

2

Levoit LV600HH – Best Warm and Cool Mist Humidifier for Large Living Room

Features
  • Coverage area: up to 753 sq. ft.
  • Water tank capacity: 1.6 gal.
  • Runtime: up to 36 hours
  • Filter: no
  • Essential oils compatible: yes
  • Warranty: 1-year limited (can be extended to a 2-year period with an order number from Amazon)

More features: touch control; built-in humidistat; whisper-quiet

OVERALL RATING: 9.7 out of 10

For those who like multiple mist options, the Levoit LV600HH is an excellent choice. It allows you to choose between cool or warm mist, both of which have three different speed levels and an adjustable dual nozzle. The warm mist is created by an advanced PTC heating system, which heats the water in the tank high enough to kill most of the bacteria in the water, emitting cleaner, healthier air for your family to breath.

The tank itself has a large 1.5-gallon capacity, so you’ll likely only need to fill it every other day. A large opening makes it easy to fill and clean with a soft brush or a rag. This tank is made of ABS plastic, which is exceptionally durable.

The touch controls are simple to use, allowing you to change the speed, mist temperature, or set it to Auto or Sleep Mode as needed. You can also adjust the humidity level you want, with the actual RH displayed right on the LED screen. A remote control is also included, so you can set all the levels and speeds without leaving your chair or bed.

Other handy features are the auto shut-off when the tank is full and the whisper-quiet motor. The aroma box makes this model one of the best humidifiers for a large room with essential oils on the market.

PROS:
  • Warm and cool mist settings
  • Touch and remote controls
  • Aroma box for essential oils

CONS:
  • Takes approximately half an hour to clean, with multiple parts to disinfect
  • Works best with distilled or filtered water

Features
  • Coverage area: up to 500 sq. ft.
  • Water tank capacity: 0.8 gal.
  • Runtime: up to 26 hours
  • Filter: no
  • Essential oils compatible: no
  • Warranty: 1-year limited

More features: LED display; auto shut-off; 3 mist modes

OVERALL RATING: 9.6 out of 10

Just because a humidifier doesn’t cost very much, it doesn’t mean it won’t have the same great features as a more expensive model, as this one from OPOLAR proves. It has a stylish black outer casing, with an LED screen, and touch-sensitive controls.

There are three mist speed options to choose from, which come out of the twin rotating nozzle on the top of the machine. The Timer Mode lets you set the amount of time you want the humidifier to be running. There is also a Sleep Mode as well, which turns off the digital display while still running the humidifier. You can also set the humidity level you want, so it will shut down automatically when the room reaches that level.

An auto shut-off stops the misting process, plus there is a red LED light to show you the tank needs filling. There is also an alarm to alert you to do it, though it comes on at all times, even in Sleep Mode, which can be a bit inconvenient.

There is no filter to clean or change, saving you time and money. The tank has a large capacity, reducing filling time. It comes right out of the machine and fills through a large hole in the bottom of the container. This water should also be changed daily to reduce any mold or bacteria growth.

PROS:
  • Timer
  • Sleep mode
  • Rotating nozzle
  • Cheap
  • Very quiet

CONS:
  • Alarm when tank is empty, even in sleep mode
  • The dark container makes it hard to see the water level

Features
  • Coverage area: up to 2,300 sq. ft.
  • Water tank capacity: 3 gal.
  • Runtime: up to 24 hours
  • Filter: yes
  • Essential oils compatible: no
  • Warranty: 3-year limited

More features: adjustable humidity control; multiple output settings;

OVERALL RATING: 9.5 out of 10

The Honeywell Cool Moisture Console Humidifier has an enormous capacity, holding up to three gallons of water in its two tanks. Though distilled or filtered water works best, any type can be used with this model, including tap or well water.

This humidifier uses evaporative technology, utilizing a wicking filter to soak up the water. The fan then blows the moisture into the air, adding humidity quickly to increase the RH levels in your home in no time. This also limits over-humidifying, so you don’t have to worry about soaking up any puddles around the machine. The filter does need to be rotated every time you fill the tank, to keep it cleaner and lengthen the time between replacements.

There are three settings to choose from, so you can run it on low, mid, or high, depending on the area you’re using it for and the current humidity levels. There is also a dial to adjust the amount of humidity added to the air, which will turn the machine on if the RH drops below the setting or off when it is reached. Indicator lights also show when the humidity level is reached or the tank is empty.

This humidifier can be a bit loud, especially on higher levels. The tanks also fill from the bottom and have a curved top so they won’t sit nicely during filling, which can be a bit inconvenient.

PROS:
  • Auto shut-off
  • Works well
  • High capacity tank
  • Easy to use

CONS:
  • Difficult to fill
  • Tank material is flimsy
  • A bit noisy

Features
  • Coverage area: up to 400 sq. ft.
  • Water tank capacity: 2 gal.
  • Runtime: up to 10 hours
  • Filter: no
  • Essential oils compatible: yes
  • Warranty: 2-year limited

More features: doubles as an air purifier; energy-efficient; three fan speeds

OVERALL RATING: 9.4 out of 10

If you are looking for the best large room humidifier and air cleaner combo for allergies, this model is a good option. The Venta LW25 pulls in dry, dirty air over the moistened Disc Stacks rotating inside the machine. Any bacteria, dust, or pollen floating in the air sticks to these stacks, then drops into the basin below. The clean, moistened air leaves the unit, increasing the room’s humidity level while it reduces allergens.

This type of humidifier uses Cold Evaporation technology, which won’t over-humidify the air. It doesn’t create cold mist or hot steam, either, so the air leaving the humidifier is the same temperature as the air in the room.

The Venta LW25 Airwasher uses the water in the tank to clean the air, so there are no filters to replace or clean. This makes this model one of the eco-friendliest humidifiers around, especially when you add in its low energy consumption.

The tank is located at the bottom of the machine, so you need to open it up and remove it to add more water. It runs for up to ten hours before refilling is needed, plus has an auto shut-off to keep it from running with an empty tank. A red LED light tells you it needs refilling. You’ll also have to add Venta’s cleaning solution to keep buildup from forming on the tank.

PROS:
  • Runs quiet
  • No filter
  • Easy to fill
  • Auto shut-off when empty

CONS:
  • Housing is thin plastic
  • Humidifying/cleaning discs are a bit small

Buying Guide

If you are in the market for a new humidifier, check out the features, capacity, and tank size, to be sure you have the right model for the area you’ll be using it in. In the guide below you’ll learn more about each of the essential specifications.

Features to consider while choosing a humidifier for large room

Coverage area

If you have a large room that is need of some extra moisture in the air, you’re going to need a humidifier with a large coverage area. The larger the space you’re using it in, the higher this number needs to be. For instance, the Venta LW25 Airwasher 2-in-1 Humidifier and Air Purifier has a coverage area of 400 square feet. If you’re using it in a room that is smaller than this, the humidifier will work at its optimal level thanks to its Cold Evaporation technology that prevents the device from over-humidifying your room.

If the room is bigger than this maximum coverage area, the humidifier may take much longer to reach the desired humidity levels, or possibly not reach them at all.

Water tank capacity

When looking into a new humidifier, you’ll likely want to check the size of the tank. The bigger it is, the more water it can hold. The more water in the tank, the longer it can run before you need to refill it. The downside is that the larger tanks can be much heavier when you’re trying to haul a full one back to the humidifier from the sink. For this, the best top fill humidifier for a large room is much more convenient. Some models, like the Vornado Evap40, have two tanks instead of one. This makes them lighter to carry if they are bottom-filling tanks, without sacrificing the amount of water they can hold.

Runtime

There are a few factors that determine the runtime of a humidifier. One is the size of the tank, as the bigger the tank, the more water there is to put through the machine. Another is the fan speed. The higher you have it set, the quicker the water will be dispersed through the room. The humidity setting is also something to consider. If you want to increase the humidity by only a few percent, the humidifier will do so and then shut off. Increasing the humidity by 20% will require the humidifier to run longer, so will use the water in the tank much faster, decreasing the runtime.

If there is a filter

Best Humidifier for Large RoomsSome humidifiers come with a filter, and some do not. Each type has its benefits and flaws. The filter models remove any bacteria and allergens before it sends the moisture into the air. The air is then cleaner, making it safer to breathe. Of course, you will need to replace or wash these filters as they get dirty. This will add an extra cost on top of the price. These models can also be a bit louder than the filterless ones.

The filterless models don’t have that extra replacement cost and run quietly in most cases. Because they don’t take the dirt and bacteria out of the air in the same way, it can collect inside the humidifier. This will require a much more thorough cleaning every few days, to get rid of any buildup.

Essential oils compatibility

If you like to add a fresh, therapeutic scent to the air, putting a few drops of your favorite essential oil in the humidifier may seem like a good idea. Some models, like the Levoit LV600HH, have a separate aroma box, which holds the oils separate from the internal parts, misting them into the air on their own.

If your humidifier doesn’t have one of these, you may consider adding a few drops to the water tank. This is not a good idea, though. These oils can damage the plastic of the humidifier, plus can collect in the machinery, coating it and causing issues with how the humidifier works. This may lead to the breakdown of the machine, requiring a replacement much sooner than expected.

If your humidifier doesn’t have a separate space for essential oils, you can try moistening a cotton ball with your favorite oil, and place it over the mist outlet. As the humidifier releases the mist into the air, the scent will be diffused and released along with it. This method protects your humidifier while still giving you the option of using your favorite essential oils.

Sound level

Most of the more portable humidifiers on the market today are made to be as quiet as possible, allowing you to use them in any room of your house without disturbing you, even in the bedroom. You need to consider the setting you’re using, though, as the higher the speed, the faster the fan will turn, creating more noise. This usually won’t affect your conversations too much, but if you are bothered by the noise, it may be best to keep the humidifier on the lower settings.

Warranty

Every product you buy needs a decent warranty to cover any issues that may arise. Though usually, warranties won’t cover misuse or neglect of the machine, in most cases, they do cover any defects with the product or workmanship. Since many of these issues don’t show up for a while after you begin to use the process, the more extended the warranty, the more likely it is that any repairs or replacement costs will be covered. A one- or two-year warranty is fine, but a five-year guarantee, like the one included with the Vornado Evap40, covers you for almost any occurrence.

Extra features

The primary purpose of a humidifier is to add moisture to the air in your home, but some models have a few additional features to make them more convenient and easier to use. One is a remote control, like the one that comes with the Levoit LV600HH. This allows you to change the settings from anywhere in the room.

An auto shut-off is also handy. There are a few types of auto shut-off. One turns off the humidifier when the tank is empty. Another turns it off when the desired humidity level is reached. Timer settings allow you to run the humidifier for a set amount of time, be it an hour or all day long. Different speeds will enable you to add moisture to the air slower or faster, as needed.

Some models have an oil diffuser, which lets you add essential oils to a separate compartment. This adds a lovely fragrance to the air as you increase the humidity levels.

Tips to maintain your humidifier

Best Humidifier for Large RoomsWhen you spend your money on a new humidifier, you’ll want it to last as long as possible. To keep it clean and working correctly, check out the following tips:

  • Though tap water will work in a humidifier, it contains minerals that can be deposited inside the machine. This can lead to bacterial growth. Mist humidifiers can also transfer these deposits onto your furniture as a white film. It’s best to use distilled, filtered, or demineralized water instead.
  • Empty the water out of the tanks often, preferably daily. Dry them out and refill with clean water. This reduces the development of mold, bacteria, film, or deposits inside the humidifier.
  • Clean the humidifier regularly, every few days. This removes any mineral deposits or film that may have formed inside the machine. Take apart any pieces, including the tank, and use the recommended cleaner for that brand. If none is recommended, try a 3% hydrogen peroxide solution, chlorine bleach, vinegar, or another safe disinfectant. Rinse it thoroughly to keep the chemicals from becoming airborne, dry all the parts, and then put it back together.
  • If your humidifier uses a filter, depending on its type clean or change it regularly. Most manufacturers have a recommended filter replacement period, though a dirty filter may need more frequent changing.
  • Check the area around the humidifier to be sure it is dry. If the floor, carpet, drapes, or anything else nearby is damp, turn down the fan or use it less frequently.
  • Give the humidifier a deep cleaning before you store it. Make sure it is completely dry to keep mold or bacteria from growing while you aren’t using it.

FAQ

This depends on your preference. A filter removes bacteria and dirt from the air, cleaning it as it adds moisture, but also requires replacement, which increases the cost of the humidifier. A filterless model doesn’t have that extra cost, but there can be some buildup of film and bacteria inside the machine. This requires a more thorough cleaning of all the internal parts, which adds extra maintenance time.

If the coverage area is larger than the area you are using the humidifier in, this is no cause for concern. The humidifier may even work better than intended, as it won’t have to humidify its maximum coverage area. You may be able to run it on a lower speed or for shorter periods of time to achieve the results you want. The desired humidity level won’t be surpassed since most of the machines turn off when the RH you set is reached. If your machine doesn’t boast this feature, get a humidistat and watch the RH levels carefully.

Though some of the models we’ve reviewed have a decent coverage area, like the Honeywell Cool Moisture Console Humidifier, they would only work well in very small homes or apartments. If you are trying to humidify an average size house, you will likely need a larger size, like a console model or a whole-house humidifier. The consoles are a bit more portable, while the whole-house models work with the heating and cooling system of your home to add humidity to all the rooms at the same time.

Our Verdict

Having a humidifier in the larger rooms of your home doesn’t just add moisture to the air, it can help reduce a variety of health issues, like dry skin, nasal congestion, and coughing. All five of the products we’ve reviewed are excellent options for this, but a few have a bit more to offer.

Our top model is the Vornado Evap40, which holds four gallons of water in two spill- and leak-proof tanks. It uses Vortex Action to humidify the area quickly, with three speeds and an adjustable humidistat for the right amount of moisture. It also has a five-year limited warranty for added convenience.

The Levoit LV600HH has both warm and cool mist options, Timer and Sleep modes, and an aroma box for essential oils. It also allows you to use either touch controls and a remote control for more convenience.

The OPOLAR Digital Humidifier is our Budget Pick, due to its great low price, but it is still a stylish addition to your home. It runs quietly, has three speed settings, an adjustable humidistat, and includes both Timer and Sleep modes.

9.9/10 Total Score
Vornado Evap40 - Editor's Choice
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