Best Humidifier for Large Rooms

Not all humidifiers are built for a large office, bedroom, living room, or guest room.

This article focuses on humidifiers for large rooms and will reveal a couple of fantastic humidifiers built for larger spaces.

Youll also learn some useful tips to help you select the best humidifier for a large room.

Lets tackle the basics first.

Why use a humidifier

We all know that low humidity is bad for our health:

From chapped lips, and persistent skin irritation, to a host of respiratory problems including sinuses and terrible coughing bouts, too much air dryness can be hell on health.

And while you can try hacks like adding houseplants to yourspaces and leaving the bathroom door open when showering (steam escapes intothe room), none is as effective in raising humidification as a humidifier.

Yet, we know that humidity levels indoors will alwaysfluctuate due to seasonal changes.

Indeed, relative humidity can reach 100% during wintermaking a humidifier all the more essential.

Read on to discover how humidifiers help in lifting humidification(and reducing air dryness).

How do humidifiers work?

A humidifier simply adds moisture to the indoor air to bringhumidity to a safe level (30-50% according to the EPA)

They form this moisture using different technologiesincluding heating and sound vibrations (we shall talk about this in detailshortly) then expel it to the environment.

Some even have automated humidity sensors and will fight airdryness in your large rooms without involving you.

Next, we look at the various types of humidifiers in themarket today.

Types of humidifiers

Humidifiers employ myriad technologies to produce moistureand as youll note, every method has its own advantages and weaknesses.

Take a look:

Ultrasonic humidifiers

An ultrasonic humidifier uses high-frequency sound waves to produce and disperse moisture in the form of ultra-fine mist (warm or cool).

Overall, these types of humidifiers are considered thequietest.

In addition, they are safe for rooms with kids and petssince they wont burn them - wont use heat like in vaporizers as youll learnbelow- when they come near the unit.

They, however, lack a mechanism to control the buildup ofmineral deposits in the unit (this can hurt its lifespan).

Evaporative humidifiers

They use evaporation to form and emit new moisture. They have filters, a water tank, and fans to facilitate water evaporation.

The units are in general inexpensive and super effective inbigger areas due to the more concentrated mist.

Besides, they generally help reduce the growth of pollutants(evaporation happens without carrying the microbes over) in the room soyoull be breathing healthier air.

But youll be incurring the cost of replacing the filtersquite often.

Impeller humidifiers 

These employ rotating discs to throw water at a diffuser. The latter helps create and discharge fresh moisture as extra-fine droplets into the air (cool mist).

These units work well too but are quite noisy.

Also common are Vaporizers (they heat water with some allowing you to add an inhalant to combat coughs) and Whole-house/furnace humidifiers (these connect to your homes HVAC system).

Humidifier for a large room: Buying Guide

Keep in mind the following in your hunt for a humidifier tohelp relieve cracked skin, allergic reactions, asthma symptoms, dry mouth, and eventroubled sleep.

The actual size of the room

They dont serve equal square footage and its important tobe sure of the exact size of your large bedroom, office, or childrens roombefore you go shopping.

Manufacturers indicate the recommended room size for everyunit so you should experience little problems here.

Tank capacity

Bigger tank capacity is required - you want it to humidifyfor more hours without you needing to refill.

Look for an estimate of the number of hours that you canexpect the included tank to last at different settings on the label.

The question of sleep

To enjoy sound sleep night in night out, select awhisper-quiet unit (even when operating at maximum speed).

There are some humidifiers for larger rooms that producenice white noise and I would rather have such.

Something else: you want a model whose light turns dim atnight to enjoy a sound sleep.

Some let you switch to the soothing sleep mode option atnight.

Assembled features

For an easier time, its desirable to have a unit withextras like auto-off (the humidifier goes off as soon as the water volume dropsto risky levels to prevent damage) and a humidity sensor (instantly starts tohumidify when the air turns dangerously dry).

Others include:

  • Adiffuser- this will help you introduce refreshing scents for aromatherapy.
  • Anti-microbial-this kills bacteria and other microorganisms and is good for your health.
  • Remotecontrol- selected digital units come with a functional remote control foroperational convenience.
  • Ahumidistat - measures humidity accurately to help sustain moistureat the set level.

Warm mist vs Cool mist humidifiers

Humidifiers forces out cool or warm mist.

Well, here is how they compare:

Apart from bringing a higher concentration of mist, devicesthat produce warm mist will effectively kill most of the growing bacteria andmolds (they often involve heating).

But as I had mentioned, they can scold pets and your youngones if they come to play nearby although again warm moisture makes wintersless punishing.

On the contrary, cool mist humidifiers dont heat and arehence safer for your toddler and furry friends.

But they might not bring the highest humidification whilethe cool air they promote may help renew the growth of toxins indoors.

In short, none is without fault and the best humidifier forlarge room for you will depend on not just the type of mist but a combinationof all the considerations I have explained in this section.

Best humidifier for a large room Reviews

I had promised to bring you the names of some of thehumidifiers that best cover large areas.

Here they are together with reviews of their diversefeatures and functioning.

URPOWER MH501 Humidifier, 5-L Large Capacity Cool Mist Humidifier

Opening our large room humidifier reviews is this immensely popular MH501 Humidifier for a large room from Urpower.

URPOWER MH501 Humidifier, 5-L Large Capacity Cool Mist Humidifier

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The large 5L tank capacity will humidify the whole night without disturbing your sleep- it actually lasts 14 -17 hours depending on the setting.

Plus, it outputs tremendous amounts of mist steadily.

We recommend it for spaces up to 300 square feet.


This large room ultrasonic humidifier offers 3 powerful mistmodes - high, low, and medium- and you only need to touch the button to switch toa comfier mode.

The 350ml/h mist volume (maximum) is really strong andshould elevate the humidity level in no time.

Sleep is no problem either- its very quiet while the lightsare very dim in the dark.

It will shut off automatically if the water drains.

The tank is easy to fill to refill too.

You will also love the sleek, decorative design and thesmaller footprint.


  • Quite easy to operate.
  • Impressively quiet.
  • Nice price.


  • The 300 sq. feet coverage is fairly small.

LEVOIT Humidifier for Large Room (cool and warm mist)

A larger 6L tank (1.5 gal) and a functional remote control (soyou can adjust the mist without being forced to get up) make this humidifier perfectfor massive rooms.

LEVOIT Humidifiers for Large Room

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The built-in sensor helps detect and take care of fallinghumidity levels.

In short, very few humidifiers will outgun this when itcomes to spaces as large as 750 square feet.


This is pretty versatile - it supplies both cool and warmmist - so you can use it throughout the year (engage warm mist when you want tokill germs/bacteria and cool mist to ease symptoms like nasal congestion andwhen unable to sleep at night).

The convenient controls make it all too easy and you caneven set it to moisturize for 1-12 hours (has a timer) so you wont worry about leaving it on accidentally.

It features three speed settings, all of which deliver solidmist to tackle humidity efficiently in massive rooms (mist at the highest speedfeels super strong).

It runs quietly to let you concentrate on the job at hand and fits on desktops, office tables, or nightstands nicely.

It needs a minimum of 2cups (480ml) for safe operation butwill still shut down automatically for added safety.


  • Handy display-off feature for a good nightssleep.
  • Can run for 36 hours continuously.
  • Super easy to clean (wide tank opening).


  • Nothing major.

Everlasting Comfort Ultrasonic Cool Mist Humidifier

For a cool dose of refreshing aromatherapy, consider thiseverlasting ultrasonic humidifier from Everlasting comfort.

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Clearly built for large rooms, this humidifies rooms up to 500square feet and moisturizes nonstop for 50 straight hours! 


Look no further than this if youre after a unit thatdelivers super high mist output and suiting all types of rooms.

You see, it reaches a speed of 270ml per hour (enough toelevate moisture levels pretty fast in larger spaces) and has asmall footprint and a narrower profile meaning it can work frompractically anywhere.

The knob lets you regulate the amount of vapor it sprays outand has double openings to help mist spread out evenly all around.

Also great is the LED indicator that helps you know when itruns out of water and the button that allows you to turn off the lights atnight.

It furthermore features an automatic shut-off switch and aneasy-to-refill tank design.


  • Lets you add aromatic fragrances.
  • You wont wake up in the wee hours to add water.
  • Saves money (no filters to replace)


  • Not many color options available.

Vornado Evap40 4-Gallon Evaporative Humidifier

As I hinted earlier, evaporative humidifiers produce the maximumamount of moisture so youre likely to find them best suited for extra-largespaces.

 Vornado Evap40 4-Gallon Evaporative Humidifier

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This has a 4-gallon tank (can run for 24 hours continuously)and gives out enormous amounts of mist particularly when on the max setting.

 Its in our opinionthe best humidifier for 1000 square feet.


Quite a simplistic unit yes but its brilliantly set up forlarge room humidification.

To begin with, the humidifier uses the spectacular vortexcirculation to push the humidified air to a longer radius- this special actionmakes humidified air to flow fast throughout the room.

The customizable humidistat means you can have itautomatically maintain comfortable humidity levels for your family.

The control panel is super intuitive (if youchoose to run it manually) and all the three 3 speeds (and humidity percentage)should adjust without a hassle.

Another thing we liked is the design of the water tanks -they are tough and permit zero leaks or spills.


  • Reasonably priced filters.
  • Easy to fill.
  • 5-year warranty.


  • Not the prettiest unit.

TaoTronics Cool mist Humidifier for Bedroom Babies

This is another wonderful alternative if youre searching for a space-saving humidifier for big room.

TaoTronics Cool Mist Humidifiers for big room

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Its ultra-quiet nature (will never exceed 32dB which is lessthan quiet library sounds) make it a dream for larger babybedrooms/nursery.

The 360° nozzle will drive mist in all directions in areasup to 500 sq. ft.


This is the only humidifier for big room in this list to be FCC certificated (meaning it wont cause harmful electromagnetic interference) and approved BPA free - exposure to BPA can trigger some health effects on babies.

Can you now see why this is considered to be a safer bet forspaces occupied by babies?

The other big attractions here are the smooth dial control(you select the mist output you wish quickly), smart LED indicator (noguesswork about it being on/off), and a slim, lightweight 1.8L water tank (foreasier refills).

Like the rest, the intelligent protection helps safeguard itwhen its waterless.


  • Supplies moisture evenly across the room.
  • Straightforward operation.
  • Compact unit.


  • No provision for aromatherapy.

Wrapping it up

While a good quality humidifier will help establish awonderful living environment for you and loved ones, its important toobserve good practices.

You should for a start strive to keep your chosen humidifierclean- molds and other germs plus possible white buildup may be injurious toyour health if inhaled.

In addition, install new filters as instructed in theowners manual to maintain optimum efficiency (if you select one usingfilters).

Then, use distilled water only where advised- this has reducedamounts of unhealthy mineral particles.

Lastly, dont put it on unnecessarily; too much humidity canbe hazardous too.