Best Humidifier For Large Room In 2022

During the winter season when the air is very dry, a large humidifier would really come in handy. It can replace the moisture lost in a large space due to the cold weather and heating. You will be protected from allergy symptoms such as dry skin, sinus congestion, static electricity, and nosebleed. But with so many types of humidifiers out there, which is the best humidifier for a large room? How do I know what humidity is needed based on the room size? Should I go with an evaporative or ultrasonic device to relieve allergies? All shall be answered in our best guide here.

Who is this for?

Best used if you are staying in a large home and the humidity level falls below 30% like in the winter. Get one if you have a cough, coarse voice, sinus, nose bleed, static shock, or snoring problem every morning. Dry, flaky skin is also a good telltale sign. For those that have trouble falling asleep or a restless baby, a humidifier may help. Finally, if your home furniture is dry rotting or wants to slightly reduce electricity bills, a large humidifier will help.

Quick Summary

Vornado Evap40 Evaporative HumidifierHoneywell HCM-6009 QuietCare Cool Mist Console HumidifierEssick Air AIRCARE MA1201 Whole-House Evaporative Humidifier
Vornado Evap40 HumidifierHoneywell HCM-6009 HumidifierEssick Air AIRCARE MA1201 Humidifier
Recommended Room Size
1000 sq. ft. (93 m2)2300 sq. ft. (214 m2)3600 sq. ft. (334 m2)
4 gallon (32 pints)9 gallon (72 pints)8 gallon (64 pints)
4out of 54.5out of 54.5out of 5
Amazon Price
** MRSP (Manufacturer's Suggested Retail Price)/ RSP (Retail selling price) is accurate at the time of posting.
^ Annual filter cost is calculated based on filter price and 12 hours of usage. Pricing could vary depending on air quality, usage frequency, and speed.
` The indicated online price guides as follows: $ = under $50, $$ = $50-100, $$$ = $101-200, $$$$ = 201-300, $$$$$ = $301-400, $$$$$$ = 401-500, $$$$$$$ = over $500.

How Do We Measure?

CoverageCoverage Humidifying coverage is perhaps the most important factor here. It will determine how effective a model can deal with dampness in a space. A small humidifier will not able to cover a large room but a large humidifier can cater to all. As a result, if the humidifier cannot cover more than 400 square feet of room space, we will not consider it.
Capacity PintCapacity The more moisture a humidifier can disperse, the faster the air in the room will be humidified. Therefore higher preference will be given to the model with a strong airflow circulation capacity. Most Evaporative models will have a higher capacity than their ultrasonic counterparts.
Water TankWater tank If you need to disperse enough moisture to cover the entire room, you will need a large reservoir to support that. Most of the models here will have between 3-4 gallons of total water storage capacity. At full refill, there should be enough water vapor to release to the air even at the highest speed. Whether in a single or dual water tank setup, if the humidifier can continue to work throughout the day, it passes our requirement.

What better way to kick starts our best humidifier for large room list with Vornado Evap40. An evaporative humidifier powered by the signature Vortex Action deep-pitched blades. At maximum capacity, Vornado Evap40 can humidify a room up to 1000 square feet of space per day. Perfect for living hall, lounge, basement, and even a 2 parking garage. The large 4-gallon water tank also means there's no need to refill the water throughout the day. You only need to set it to Intelligent humidification mode and check in every morning on the water level. Another thing we like about Vornado Evap40 evaporative humidifier is the long 5 years warranty. Not only that, the entire assembling line including parts are all made in the USA. Very rare at this price point and for a humidifier.

There are 2 things we dislike though and first is the rather dated controls with no digital screen. Knowing the surrounding dampness level can help us evaluate our room air quality and determine the humidity needed. Second is the cost of ownership. Vornado Evap40 is already more expensive than few large room humidifiers here. The wicking filter can also surge up to 100+ dollars on frequent use. Not to mention you will need distilled or demineralized water to power the device. Something to ponder on.

What's cool:

  • Humidify up to 1,000 square feet of room space at maximum speed.
  • Intelligent humidification mode that turns on the device when needed and turns it off when an ideal humidity level is reached.
  • Disperse up to 4-gallon of water moisture per day.
  • Dual side water tank with a total capacity of 4-gallon.
  • Completely built in the USA with a long 5-years warranty.

What's not:

  • Dated design with basic dial knob controls that cannot support precise humidity adjustment.
  • Wick replacement filters can be costly in the long-run.
online price (US)**
±149.99 $$$/ 7

(annual filter cost ±78-156)


More powerful as Evap40 but at a cheaper price, how is that possible? With Honeywell HCM-6009 QuietCare Cool Mist Humidifier you can. The strong airflow circulation can cover around 2000+ square feet of room space. Ideal for master bedroom, living room, studio, basement, and crawlspace. Honeywell HCM-6009 also comes with advanced mist humidistat that automatically turns on the humidifier when the humidity level drops, or turn off the machine when a humidity point is reached. Another highlight is the highly useful Protec Antimicrobial wicking filter. The filter will trap large particles like white dust and inhibits 99.99% of mold/ bacteria growth. Very important to ensure the room air is clean and moist.

Here come the controversial negative points that some may not agree with us. Honeywell HCM-6009 QuietCare Cool Mist is an old-fashion console humidifier. So naturally it will be bulky with unintuitive controls. While the large dimension may help in cleaning and maintaining the humidifier, it will take up a lot of space and is cumbersome to do so. Wicking filter also needs replacing very often to prevent the mineral deposits buildup. If you don't mind all that, Honeywell HCM-6009 will be a good buy.

What's cool:

  • Strong evaporative humidifying that can cover up 2300 square feet of room space.
  • Advanced Mist Humidistat that will automatically turn the humidifier on and off to maintain the preferred humidity level.
  • Uninterrupted 24-hour continuous operation.
  • Dual heavy-duty water tank with a total of 3-gallon capacity.
  • Protec Antimicrobial wicking filter that inhibits 99.99% of mold growth.

What's not:

  • Unintuitive dial knob controls with no display to show current humidity level.
  • Wicking filter gets moldy quickly if is not replace in time.
online price (US)**
±149.95 $$$/ 7

(annual filter cost ±96-192)


The best whole-house humidifier for a large room without a doubt. Essick AIRCARE MA1201 is a very powerful evaporative humidifier that can cover up to 3600 square feet. That's more coverage than a 3 bedroom condominium or a single storey house. Supporting that is the dual water tank with a total 4-gallon capacity. You can run 36 hours continuously without having to worry about the water level in the tank. Functionality is also great in Essick AIRCARE MA1201. You have an adjustable humidistat backed by a small digital display. The built-in sensor also allows auto humidification that will maintain the room humidity level between 40-60%. Lastly, there is nighttime mode that produces noise as low as 36 dB for bedtime use.

Let's quickly touch on the downside first. The wicking filter is very expensive to replace especially if you are a high usage person. Even though it is the perfect humidifier for whole-house use, two standalone models could still cover more ground. That said, if you only want a humidifier to work and clean in your home, Essick AIRCARE MA1201 is the right call.

What's cool:

  • This high tier version can cover up to a massive 3600 square feet.
  • Auto humidistat that will automatically adjust to the right setting based on room dampness level.
  • High moisture dispersion that can continue running up to 36 hours.
  • Easy to refill, lead-proof 4-gallon bucket.

What's not:

  • Wick filter requires replacing monthly that will swiftly add up the cost.
  • Bulky and heavy that takes up a lot of room space.
online price (US)**
±159.99 $$$/ 7

(annual filter cost ±150-300)


You might be surprised that we included Levoit LV600HH humidifier on our list. It has a smaller but respectable 753 square feet coverage. The 1.5-gallon water tank is only half of the size of most evaporative humidifiers here. Pricing is about the same as other more powerful units thus the value proposition is not there. So why is Levoit LV600HH a good large room? It is because of the hybrid ultrasonic setup.

A hybrid ultrasonic humidifier is a humidifier that can disperse both warm and cool mist in a large room. A very useful feature as we will go through different seasons with different humidity levels regardless of the room size. A warm mist is perfect for the winter season when the air is cold and dry. It helps alleviate cold, cough, and seasonal flu. A cold mist is perfect for summer as it can relieve allergies and reduces static electricity. So rather than switching a humidifier every season and end up cleaning both, just stick with Levoit LV600HH.

What's cool:

  • Ultrasonic humidifying that covers up to 753 square feet of room space.
  • Able to switch between warm or cool mist humidifying.
  • Continuous operation that lasts up to 36 hours of run time.
  • Smart Auto mode that will also work with the essential oil.

What's not:

  • Not the most powerful humidifier for a large room.
  • More refilling trips needed with the 1.5-gallon water tank.
online price (US)**
±N/A $$/ 7

(annual filter cost ±17-34)


Like HCM-6009 but wish for something smaller model, Honeywell HEV685 Cool Moisture is your answer. It has all the essence of a Honeywell model without compromising any performance. Even at low speed, it can cover a large room with 24 hours of continuous humidification. The strong airflow is not complete without an antimicrobial filter that prevents mold and mildew growth. Every airborne particle coming in will be trapped by the filter so the dispersed mist is clean and breathable. Adding the top fil and break-proof reservoir, this 3-year warranty humidifier will give you a long, hassle-free ownership experience.

Honeywell Cool Moisture HEV685W/ HEV685B comes with multiple color options that in theory should give you a headache which to go for. In real life, the differences are minimal and it is not a very attractive design to begin with. As for the functionality, The lack of a digital display is a big let down for a humidifier intended for large room usage. No digital screen, no precise humidity adjustment. Lastly, the protec filter that can be expensive to replace if you leave it running from day till night.

What's cool:

  • Cover multiple rooms with 24 hours of continuous operation.
  • Manual and auto humidistat that will set the ideal humidity according to the surrounding dampness.
  • Antimicrobial wick filter that removes white dust and inhibits 99.99% of mold growth.
  • Easy to clean, dual water tank with a total 3-gallon capacity.

What's not:

  • Expensive wick filter replacement that is needed in order for the humidifier to function properly.
  • Simple controls with no digital and humidity display. Not even a timer.
online price (US)**
±129.95 $$$/ 7

(annual filter cost ±114-228)



Best Humidifier For 1000 Square Feet Or Higher

A 3 bedroom condominium or a terrace house can easily take up more than 1000 square feet of room size. To fill the entire room air with moisture, you will need a good evaporative humidifier that holds a large water tank. After months of research, here are the best humidifiers for 1000 square feet and above.

  • Vornado Evap40 Humidifier
  • Honeywell HCM-6009 Humidifier
  • Essick AIRCARE MA1201 Humidifier
  • Honeywell Cool Moisture HEV685W/ HEV685B Humidifier

Will A Humidifier Work In a Large Room?

It will but you will have to look for a humidifier that can discharge enough moisture to cover for a large area. Most manufacturers will put in the recommended room size the humidifier can support at a given speed. Always go with a higher moisture capacity model rather than a lower one. For example, if you need to increase the humidity level of a 1000 square feet room space, go with a large humidifier that can at least support that. That way you will leave some space for leverage for different home's layout or when the model is running at a slower speed.

Where Should a Humidifier Be Placed In a Room?

It is best to place a humidifier as centrally as possible in the area you wish to humidity. A centrally placed humidifier might not be applicable to all homes as you're at risk of tripping over the cable. Most people will place the humidifier in the corner, leave 1-2 feet of gaps and point the mist away from the wall. For multi rooms humidifying, leave all doors open to allow airflow circulate into the room.

How Long Does It Take a Humidifier To Fill a Room?

In general, it will take a humidifier at least 12 hours to fill a room with moisture. The efficiency of the model is highly dependant on the moisture discharge speed, water tank capacity, and the room size. Modern humidifiers that are running at low speed can operate continuously for 12 to 24 hours with a 1.5-gallon reservoir. Evaporative humidifiers with a 3-gallon reservoir can run continuously for up to 36 hours before required refilling.

Can I Use Tap Water In The Humidifier?

You should only use distilled or demineralized water as recommended by all brands. Tap water contains minerals that promote mold and bacteria growth. It may cost you a fortune of doing so as humidifying for a large room requires a lot of water. However, you will be at a lesser risk of inhaling the airborne germs and the humidifier will be in better condition with fewer mineral deposits.

Do Humidifiers Use A Lot Of Electricity?

A humidifier does not use a lot of electricity even in a large room. As the power rate varies from state to state, EPA reports that humidifiers account for approximately 0.11 percent of total electricity in U.S. homes. Ultrasonic humidifiers consume the least amount of energy compared with other types. A warm-mist humidifier will use more electricity than a cool-mist type due to the heating element.

Should I Leave The door Open When Using a Humidifier?

That depends. If you are trying to add moisture to a single room, it is best to leave the door closed to avoid moisture from escaping. If you are humidifying a large area e.g. the entire floor, you should keep all doors open so the moisture added into the air will be able to flow inside the room. Don't worry about over humidifying a room as most models come with auto mode or adjustable humidistats that you can manage properly.

What To Consider When Buying A Humidifier for Large Room

Aside from the earlier points, There are other features to take into account when picking the best large humidifier. Every single point here will reflect on how effective a humidifier can be in covering different sizes of rooms. It will also determine how livable is the humidifier on a daily routine. So pay attention to the features below and see which could be the key factors in choosing the right model.

  • Room size - Knowing the space or floorplan of your home that the humidifier needs to be running is a massive help. If you need to cover a 1000 square feet size, get a humidifier that has the capacity to meet that. Refer to the manufacturer's suggested room size and always settle for higher capacity output than less.
  • Water tank - Humidifiers must function with a detachable bucket. The bigger the reservoir, the more water can be stored, and less refill is needed. A 3-gallon water tank would be ideal for daily operation in a large room but that would depend on the humidity output level. Some models come with a dual water tank setup that can be handy when refilling. Also consider which refill method you preferred: top fill or bottom fill.
  • Capacity - How much moisture can a humidifier disperse per day. For larger room, you will need a higher moisture output to cover the entire room space. Most evaporative humidifiers can release more moisture than ultrasonic models.
  • Cost of ownership - Most large room humidifiers will not cost you more than 150 dollars but it's the monthly filter replacement that will get you. Expect to pay up to 200 dollars on high usage frequency. Refer to our estimated annual filter cost and see if you are comfortable with the figures.
  • Noise level - Most evaporative humidifier has a low to medium noise level that will not cause too much of a disturbance. If you want a whisper-quiet operation, an ultrasonic humidifier would be a better fit has it usually produces noise level less than 40 dB.
  • Power consumption - Expect power usage around 80 watts depending on the humidistats and fan speed. If you want to lower the electricity bills, go with an ultrasonic model and focus on cool mist humidification.
  • Digital screen - A deal-breaker for some if the unit does not come with one. With a digital display, it will show the current room humidity level so you can make the right adjustment accordingly.
  • Auto humidification - A very useful feature that allows autonomous operation. Via the built-in sensor, the humidifier will automatically turn on when it detects the room humidity level is low. When a good humidity point is reached, it will shut down all operations but remain active in the background for restart.
  • Size and weight - Humidifiers are not very bulky but can be heavy especially with the filled up water. Generally, it will not be a big concern unless you have pets, children at home or intend to place it on a table or cabinet with limited space.
  • Filter - All evaporative humidifiers come with a wicking filter that helps capture large particles like dust and hair. Some come with extra pre-filter or antimicrobial coating to prevent mold build-up. Check the filter durability as it would directly impact the usage lifespan.
  • Warranty - Any appliances that run continuously will have a higher chance of breaking down. 1-year warranty is standard, 3 is a given and some manufacturers offer up to 5 years. The longer the coverage, the better piece of mind you will have knowing any faults will be cover by the manufacturer.

2022 Best Large Room Humidifier

NoImageHumidifierOnline Price (Amazon)CapacityCoverage
1Vornado Evap40 Evaporative HumidifierVornado Evap40 Humidifier


4 gallon (32 pints)1000 sq. ft. (93 m2)
2Honeywell HCM-6009 QuietCare Cool Mist Console HumidifierHoneywell HCM-6009 Humidifier


9 gallon (72 pints)2300 sq. ft. (214 m2)
3Essick Air AIRCARE MA1201 Whole-House Evaporative HumidifierEssick Air AIRCARE MA1201 Humidifier


8 gallon (64 pints)3600 sq. ft. (334 m2)
4Levoit LV600HH Hybrid Ultrasonic HumidifierLevoit LV600HH Humidifier


1.5 gallon (5.6 pints)753 sq. ft. (70 m2)
5Honeywell Top Fill Cool Moisture HumidifierHoneywell Cool Moisture HEV685W/ HEV685B Humidifier


2000+ sq. ft. (186 m2)

Max Fernandez

A humidifier distributor with more than 11 years of experience in the field, Max Fernandez is no stranger to the moisture-capturing machine. You can catch him here reviewing humidifiers and preaching on the importance of perfect humidity.