The Best Large Room Air Purifier Reviews

Best Large Room Air Purifiers
Source: Flickr.

Some rooms are just a little bit bigger than others. It might be a Great Room in your home, a master bedroom, or another place where you regularly spend time, but smaller units aren’t going to meet the needs of this kind of larger space.

You’re going to need the best large room air purifier. These reviews will help you find the best model with the right features for you today.

The Best Chart for Large Room Air Purifiers

Large room models operate in the same way as their smaller counterparts do. The only difference is that they are built to cycle higher levels of air at a much greater frequency.

These top-rated models will help you make sure that the air you breathe every day in your larger rooms is virtually free from the particulate contamination that can be so bothersome.

PictureNameRatingMax Room Size?
Airfree Onix 30004.0650
Lifesmart Medical Grade5.0
HealthPro Plus 4.3
Rabbit Air MinusA2 Ultra Quiet Wall Mountable4.4
AeraMax 300/DX954.6
Whirlpool Whispure True HEPA4.5500
Winix WAC9500 Ultimate Pet HEPA 4.5
286 $$$$
Rabbit Air BioGS 2.0 Ultra Quiet4.7
Surround Air XJ-3800 Intelli-Pro 4.2
Winix U300 Signature Large Room4.4
PictureNameRatingMax Room Size?

What is a Large Room Air Purifier, and Why Do You Need One?

It’s all about the airborne particles.

Different designs will target different indoor air quality pollutants. It’s important when shopping for a large room air purifier that you find one that can pull out the pollutants that may be in your home. Then you’ll need to look at the coverage that the air purifier can provide to make sure you can effectively reduce pollutants in your large room.

The type of pollutant matters because each indoor air quality issue has a different size of particulate. If the filter can’t pull out that pollutant, then it will just get pushed back into the air that you breathe. You’ll have wasted your money. Here is a look at the size of some of today’s most common indoor air quality pollutants.

  • Mold: 1-5 microns, up to 20 microns for large colonies
  • Bacteria: 3-3 microns
  • Dust Mites: 10-40 microns
  • Plant Spores: 10-70 microns
  • Pet Dander: 3-5 microns
  • Pollen: 10-100 microns
  • Fungi: 5 – 5 microns
  • Cigarette Smoke: 003-0.04 microns.

As you can see, some basic air purification methods can help you eliminate dust mites, some mold spores, and many bothersome pollens. Upgrading to true HEPA filtration can help you to remove bacteria, small pet dander, and fungi contaminants.

Cigarette smoke, however, can be difficult to remove for even the best large room air purifiers because this contaminant is so small.

With the right unit, you can limit these pollutants very effectively. The best way to do that is to find a large room air purifier built with the features that can take care of your needs right now. 

The Features of Large Room Models

Every large room air purifier you look at today should focus on one thing: air circulation. This is the biggest struggle that a large room has. Because the space is so open and large, it can be very easy to have ineffective air circulation.

Vaulted ceilings and other architectural features can enhance this problem. If the air purifier doesn’t promote air circulation, it will never truly filter the entire indoor environment.

Depending on the contaminants in the large room, you may also wish to shop for a model that is built to be a sealed system. Sealed systems trap the particulates that are filtered out of the air and won’t let them leak back out if you forget to change a filter, or the unit runs into a mechanical issue for some reason.

Odors can also be a problem for some large room air purifiers. Removing odors is a little different from removing particulate contaminants. You need to have a feature included that allows for carbon filtration of the air.

If all you’re using is a HEPA filter, then the odors are going to pass right through and come back out once the purifier has cycled.

You’ll also want to look for a large room air purifier that is rated for 24/7 use. If it’s not running all day at a constant level, then there will always be pockets of air that get trapped in large rooms that will never be filtered.

Factors to Consider When Shopping for a Large Room Model

  • Coverage area. You’ll want to make sure that your large room air purifier can actually handle the room you plan to have it operate in. Most manufacturers use an 8-foot ceiling as a guideline for their square footage recommendations, so keep that in mind if your ceilings are higher.
  • This is the “air changes per hour” rating of the unit. The number is a reflection of how many times the air is filtered in the room per hour. A rating of 5 indicates 5 total air changes for each hour of operation.
  • Filter replacement. Even HEPA filters need to be replaced occasionally. Don’t forget to make sure you can access the filter and if replacement filters are available for your preferred air purifier.
  • Noise pollution. Some large room air purifiers are needlessly loud. If you don’t want your ears ringing when you’re in the same room as this machine, then look for whisper-quiet technologies as part of the shopping process.
  • Ozone creation. There are models that produce high levels of ozone. Some designs only create ozone. It can be a lung irritant, especially for those with asthma issues, so look for models that keep ozone levels down.

What Are the Prices of the Best Large Room Air Purifiers?

These aren’t going to be cheap. Large room models need to have high levels of output, strong motors and support mechanisms for continuous running, and high coverage ratings. This means you won’t typically find a good large room air purifier for less than $100.

Premium models in this category can be over $700 if you need medical-grade components. For $150-$250, most households can find something that will meet their needs.

What Do Our Reviews Have to Say?

The following reviews are on the top five large room air purifiers we have chosen for your home. Read them carefully to help determine which one will suit your home and family best.

AirfreeOnix 3000

Working in rooms up to 350 square feet in size, this is a unique air purifier that runs with virtual silence. At its core is a different technology: Thermodynamic TSS. Think about how you sterilize things at home. You boil items in water, right?

It’s the same principle with this unit. This makes the unit ultra-efficient as it destroys the contaminants that might be lurking in your home. Mold, allergens, dust mites – they don’t stand a chance. All organic pollutants can be effectively removed. Just turn the unit on, and you get results.

Click here to check the price on Amazon and get the best deal.


This extra-large air purifier is rated to purify rooms that are up to 938 square feet in size. It uses an exclusive HEGA (High-Efficiency Gas Absorber) to get the job done. This technology, which was initially developed for the military as a method to combat chemical warfare, is able to eliminate over 3,000 different contaminants.

There is also a 5 year HEPA filter included to remove the small particles that might be in the air and a pre-filter for the dust, hair, and pet dander. When you see how effective this model is at what it does, you’ll want to own one just as much as we do.

Click here to check the price on Amazon and get the best deal.

IQ Health Pro Plus

This model has the most effective air cleaning ratings for allergies according to the consumer foundation in Germany. It works in rooms as large as 900 square feet without producing any ozone. Using ultra-HEPA filtering, your home can receive the same results as clean rooms or hospitals with the grade of air filtration that occurs.

A remote control comes with this unit for easy use, and an integrated timer gives you full control over your running time and filter life. It’s an investment, but if you have sensitivities from the air in your home, this unit is virtually guaranteed to manage them effectively.

Click here to check the price on Amazon and get the best deal.

Rabbit Air MinusA2

With this large room air purifier, you get six different filtration options from which to choose. This allows every home to create the customized air purifier they need to create specific results. Room coverage with this particular model is rated to 700 square feet thanks in part to the BioGS HEPA filter that is used.

It removes odors effectively, but you will need to vacuum the pre-filter at least once per month for the best results. It’s not bulky like other designs in this category, is powerful, and will help you enjoy clean breathing once again.

Click here to check the price on Amazon and get the best deal.


This four-stage model offers you smart sensors so you can extend filter life by having the unit turn on or off automatically. It’s a true HEPA filter that comes with this unit, and it’s so effective that it has been certified as being friendly for asthma and allergy sufferers by the Asthma and Allergy Foundation of America.

A unique feature on this model, the “Cold and Flu Season mode,” helps to remove potential viruses from your indoor air when they are at their most contagious. It is rated for rooms up to 600 square feet in size.

Click here to check the price on Amazon and get the best deal.

Whirlpool Whispure

Whirlpool Whispure Air Purifier, HEPA Air CleanerThis whisper classic design features an extremely user-friendly and easy to use soft-touch control interface. You can choose from different settings including low, medium, high, and turbofan speeds. With its whisper-quiet air purifier operation, you will also find a sleep mode.

It comes equipped with an active carbon pre-filter and a true HEPA filter that captures up to 99.97% of airborne particles throughout the home. Among these particles and allergens, it can purify the air from household dust, pet dander, mold spores, and plant pollens. When it is time to change the air filter, there will be indicator lights on the top of the unit letting you know it is time for replacements.

This unit can be programmed in increments of two, four, six, and eight hour time intervals. Once the time has elapsed, the Whirlpool WhispureAir Purifier automatically turns itself off. It also does this while it is in sleep mode, as well.

Click here to check the price on Amazon and get the best deal

Winix WAC

Winix WAC9500 Ultimate Pet True HEPA Air CleanerIf you have pets in the home, then this is the air purifier you will definitely want to consider. Its true HEPA filtration captures approximately 99.99% of all airborne particles, including pet dander and other allergens. The odor control carbon filter is washable and is also formulated to help with any offensive pet odors there may be along with cooking odors and other common household odors.

Since the filter is washable, it can extend the life of the filter while also capturing pet hair in addition to the larger airborne particles. Its PlasmaWave technology combats pollutants at more of a molecular level, which helps neutralize odors, bacteria, viruses, and other gases that may be in the air.

The Winix is one of the more powerful air purifiers for pets that also features smart sensors with auto-mode as well as dust and light sensors that automatically adjust the settings to meet whatever the current environment needs.

Click here to check the price on Amazon and get the best deal

Rabbit Air BioGS

RabbitAir BioGS 2.0 Ultra Quiet HEPA Air PurifierThis is a larger purifier that is ideal for a space of up to 500 square feet. It is Energy Star certified and will not cause high electrical bills during operation. It features four levels of purification and deodorization and has HEPA and charcoal-based activated carbon filters that can last up to three years. This time is based on twelve hours of daily operation.

If you suffer from allergies, it is recommended that you use the Rabbit Air in a room of 275 square feet with four air changes per hour. The pre-filter captures larger sized allergens as well as dust and other particles. The BioGS HEPA filter traps the smaller particles and reduces allergens in the room. Interface lights will disappear while the purifier is idle, and this helps cut down on light pollution while also saving energy.

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Surround Air Intelli-Pro XJ-3800 7-in-1 Intelligent Air PurifierThis purifier can clean the air in seven different ways. It features air-cleaning technology that combats a variety of different airborne indoor pollutants and works well in an area up to 500 square feet. The SurroundAir enables maximum airflow but its fan is quiet, and the unit overall is energy efficient.

In addition to its carbon filter that helps with odors, it also has a germ-killing UV lamp and a washable electrostatic dust collector that goes even further at cleaning and purifying the air. It also displays four levels of air quality and has an auto mode that will automatically adjust its settings according to the different pollution levels in the room.

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Winix U300

Winix U300 Signature Large Room Air Cleaner with True HEPA 5-Stage FiltrationThis is another one of the best large room air purifiers you can purchase and works well in a room up to 300 square feet. This Winix signature model features a 5-stage air cleaning process, PlasmaWave technology, and is equipped with a washable carbon filter.

It features an air quality sensor with an auto-mode as well as a visual indicator. It has four different fan speeds and is Energy Star qualified which makes it more energy efficient.

Click here to check the price on Amazon and get the best deal

The best large room air purifier reviews will help you make certain that every room in your home has the best air quality possible for your improved health and well-being. Some apartments, condos, or small single-family homes may even find these rated air purifiers to be an effective whole-home air purifier.

Find your preferred model today, and you’ll be able to stop holding your breath for a great deal on the air purifier you need.