Top 10 Best Large Room Air Purifiers in 2024 (over 500 square feet)

1) Blueair HealthProtect 7770i – Our 2024 Champion, Rank S-

Blueair has also been a well-known name in the air purifier industry for over two decades. After years of expertise, it’s safe to say Blueair is a reliable source for air purifiers, particularly when it comes to huge air purifier machines for large rooms.

The Blueair HealthProtect 7770i is simply the best large room air purifier, according to our new air purifier ranking list, of which overall ranking is S- and performance ranking is S. This air purifier can cover an extra-large room of 700 square feet, verified by the Association of Home Appliance Manufacturers (AHAM).

The Blueair HealthProtect 7770i is one of the most powerful air purifiers on the market, with an unmatched fan power. This air purifier has a CADR rating of 400 Dust/ 435 Smoke/ 435 Pollen (cfm) and an ACH rating of 5X.

In terms of power, the Blueair HealthProtect 7770i is the most powerful and economical air purifier we’ve tested. Its high fan power is nearly as good as the Blueair Pro XL for only a third of the price. Blueair HealthProtect 7770i’s internal air filtration system made of the latest HEPASilent Ultra technology, with 2 stages.

1. Pre-filter – For best performance, you’re required to clean the pre-filter regularly. It can trap large pollutants, prolonging the life time of the Smart Filter.
2. Smart Filter – The most advanced filter technology of Blueair can remove airborne pollutants and allergens such as pollen, dust, pet dander, mold spores, fine smoke particles and more. It is covered by activated coconut shell carbon, to adsorb chemicals, Volatile Organic Compounds (VOC), and annoying household odors from cooking, smoke, and pets.

Since we released our new updated ranking list for 400+ air purifiers, the Blueair HealthProtect 7770i has won the title of the best air purifier for many lists, including the best large room air purifier. It has a top-notch performance ranking and a superior style, as well as high-end features that you can’t get in the Pro Series – smart control via smartphone app or Alexa voice commands, which is especially necessary for a large room. Finally, the Smart Sensor is extraordinary, as the air purifier will automatically adjust its fan power to match the real-time indoor air quality.

Here are the pros/cons of the Blueair HealthProtect 7770i:

Review: Blueair HealthProtect 7770i Review.

Related post: Best air purifier 2024.

2) Levoit Core 600S – The Best Bang for the Buck

The air purifier from Levoit proves that this brand can really make air purifiers targeting large rooms (over than 500 sq ft). The Levoit Core 600S even go far, ranking A+ as well as position 2 in our list of the best large room air purifier.

The Levoit Core 600S is also the best bang for the buck, with its price going lowest in the clash of the large room air purifiers, winning over its predecessor, the LV-H134 with the large room coverage of 700 square feet.

This air purifier has an impressive CADR rating of 373 Dust/ 377 Smoke/ 437 Pollen (cfm), which is the highest among air purifiers under $300. In our air purifier ranking list, the Levoit Core 600S ranks A+ with an S in performance ranking.

Levoit Core 600S is a large room air purifier with a signature air filtration system from the very first Levoit air purifier. We have a 3-stage air filtration system as below:

1. Pre-filter – This mesh pre-filter can capture large airborne objects like dust, pet dander, pet hair, lint and fiber. This pre-filter is mostly for maximizing the True HEPA filter’s life.
2. True HEPA filter – A H13 True HEPA Filter can reduce 99.97% down to 0.3 microns including dust mites, allergens, pollen, and mold spores.
3. Activated Carbon Filter – The custom high-efficiency Activated Carbon filter (ARC formula) is especially effective for cooking smells and pet odors in a multi-pet household. It also extends the life of the filter by chemically decomposing molecules trapped within the Activated Carbon Filter, which prevents oversaturation and second-hand pollution.

Levoit Core 600S revamps the air filtration system from the previous line, running at high efficiency while being energy-saving with an Energy Star rating. Additionally, this could be the air purifier with the lowest noise level, making it perfect for even bedroom.

The Levoit Core 600s uses an advanced laser sensor for a more accurate and quicker result of the indoor air quality index, within only 30 seconds. Based on the result, the Levoit Core 600S will monitor the right fan speed for your home.

Here are the pros/cons of the Levoit Core 600S:

Review: Levoit Core 600S Review.

Related post: Best air purifiers for bedroom.

3) Blue Pure 211 Auto – Strong Performer with Auto Mode

Blue Pure 211 Auto is the upgraded smart version of a popular air purifier, and it features a great fan power for the only half the price of the HealthProtect 7770i. It is another good option for large rooms, considering the price is nearly the same as the Levoit Core 600S.

Blue Pure 211 Auto is suggested for a room size of 540 square feet by Blueair, and it is also verified by the Association of Home Appliance Manufacturers (AHAM) with a CADR rating of 350 Dust/ 350 Smoke/ 350 Pollen (cfm). That’s the floor of fan power to be in Breathe Quality’s list of the best large room air purifier.

In our air purifier ranking list, the Blue Pure 211 Auto ranks B with an S in performance.

Of course, the Blue Pure 211 Auto will follow the strict Blueair’s air filtration system.

1. Pre-filter – The fabric pre-filter of the Blue Pure 211 Auto is outside the air purifier and can catch the large particles. This pre-filter is washable or vacuumable.
2. Particle filter – Instead of using a True HEPA filter, the Blue Pure 211 Auto uses a polypropylene fiber filter to help capture 99% of all allergens like dust, dust mites, pet dander, pollen and fungi (HEPA technology).
3. Activated Carbon Filter – The Activated Carbon filter is added inside the Particle filter and effective against smoke, odors, gases and VOCs.

Even though the Blue Pure 121 is available, the newest Blue Pure 211 Auto is still one of the best air purifiers Blueair sells. Since Blueair didn’t launch a Blue Pure 121 Auto, the Blue Pure 211 Auto is the only way to get the best Blueair’s large room air purifier with Auto Mode.

You get everything you’d want from the best Blue Pure product, at a slightly lower fan power. That is, the Blue Pure 211 Auto is able to deal with airborne ultra-fine particles, from dust, dust mites, pollen, pet dander to even bacteria, germs and viruses.

If you don’t want to repeatedly change the fan speed, you need to use its Auto Mode. The Blue Pure 211 Auto will simply adjust its speed according to the current air quality level.

Here are the pros/cons of the Blue Pure 211 Auto:

Review: Blue Pure 211 Auto Review.

Related post: Best air purifiers for dust.

4) Blue Pure 121 – Raw Performance for Large Rooms

Blueair scores again on this list of the best large room air purifier, with the top-end Blue Pure 121. The Blue Pure 121 is suggested for rooms up to 620 square feet, however, its performance ranking is undeniable, and it may best even more expensive flagships of other brands.

In our air purifier ranking list, the Blue Pure 121 ranks C+, with an S- in performance.

Blue Pure 121 features the exclusive Blueair air filtration system as below:

1. Pre-filter – The fabric pre-filter of Blue Pure 121 is outside the air purifier and can catch large particles. This pre-filter is washable and/or vacuumable.
2. Particle filter – Instead of using a True HEPA filter, Blue Pure 121 uses a polypropylene fiber filter to help capture 99% of all allergens like dust, dust mites, pet dander, pollen and fungi (HEPA technology).
3. Activated Carbon Filter – The Activated Carbon filter is added inside the Particle filter and effective against smoke, odors, gases and VOCs.

Though the Blue Pure 121 is a simple air purifier without any smart feature, it is simply the most powerful air purifier for under $500, which is widely confirmed by many reputable air purifier reviewers in the world. It is verified by the Association of Home Appliance Manufacturers (AHAM) with a CADR rating of 400 Dust/ 400 Smoke/ 400 Pollen (cfm).

Here are the pros/cons of the Blue Pure 121:

Review: Blue Pure 121 Review.

Related post: Best air purifiers for pets.

5) Winix XLC – High fan power

With an unmatched fan power, together with a combination of True HEPA filter and PlasmaWave technology, the Winix XLC officially wins a slot in our list of the best large room air purifiers. The newest air purifier of Winix is packing with the internal power that you could expect from other flagships, at a much lower price.

The Winix XLC is verified by the Association of Home Appliance Manufacturers (AHAM) to cover rooms up to 620 square feet, with a CADR rating of 355 Dust/ 400 Smoke/ 400 Pollen (cfm).

In our air purifier ranking list, the Winix XLC ranks B+.

The Winix XLC uses its signature air filtration system with 4 stages.

1. Pre-filter – The polluted air must pass through a mesh pre-filter. This pre-filter will capture the large contaminants, such as pet hair and even some kinds of pet dander and skin. It is washable.
2. Activated Carbon Filter – The air filter can adsorb household odors from cooking, pets, and smoke and reduce VOCs.
3. True HEPA filter – The True HEPA Filter that captures 99.97% of as small as 0.3 microns allergens, virus particles, pollen, mold and fungi particles.
4. Winix PlasmaWave – This technology is somehow an ionizer, which can further reduce the amount of pollutants. Can be switched on/off.

Such great air filtration system allows the Winix XLC as one of the best large room air purifiers. It can clean a large room in no time, and it can match an air purifier that normally costs you $200 higher.

The Winix XLC also has the smart features, for example the dual air sensors and Wi-Fi capability feature. Such features can help you a lot in large rooms, where you don’t want to manually change the setting of your air purifier.

Here are the pros/cons of the Winix XLC:

Review: Winix XLC Review.

Related post: Best air purifiers for smoke.

6) Blueair Pro XL – Highest Power and Price, Rank B

The old champion of Blueair once again comes back as one of the best air purifiers for large rooms. Blueair Pro XL is still the air purifier with the highest fan power, resulting in the highest performance at a ridiculously high price. However, ranking B in our air purifier ranking list, the Blueair Pro XL shows its prominence with an A+ in performance ranking.

The Blueair Pro XL comes with an AHAM’s CADR rating of 950 Dust/ 800 Smoke/ 900 Pollen (cfm), which is the highest specs we’ve tested. It is recommended for 1180 square feet, but we believe that nothing can beat it in terms of power.

Blueair Pro XL is an old device at the moment, featuring the classic air filtration system made by Blueair years ago.

1. Particle Filter/ SmokeStop Filter – Choose between the 2 options. One is the Particle Filter, the optimal choice for removing particle pollutants such as bacteria, viruses, pet dander, dust and pollen. Or the SmokeStop Filter to get rid of gaseous pollutants, for example Volatile Organic Compounds (VOCs, such as formaldehyde), tobacco smoke and particles.
2. Carbon+ Filter – To add an extra protection against gaseous pollutants.

The old HEPASilent technology of the Blueair Pro XL allows it to run quietly and save energy, while achieving high performance. In fact, the Blueair Pro XL can capture 99.97% of pollutant particles as small as 0.1 microns.

Evolved from the Pro L, the Blueair Pro XL gets its own Blueair Pro AIM to monitor the fan speed according to the environment. However, it lacks most of other basic features.

Here are the pros/cons of the Blueair Pro XL:

Review: Blueair Pro XL Review.

7) Austin Air HealthMate Plus (HM450) – The Best Medical Grade Air Purifier for Large Room

With the title of “The only Clinically Proven, Medical Grade Air Purifier”, Austin Air is always the first choice when it comes to choosing the best large room air purifier. If you could afford a high-range budget machine, Austin Air is the brand that is most frequently mentioned.

The Austin Air HealthMate Plus is notable for its large room coverage of 1500 square feet.

The fan power of this Austin Air flagship is great with a CADR rating of 400 cfm. In our air purifier ranking list, the Austin Air HealthMate Plus ranks C+, with an A+ in performance ranking.

One advantage for the Austin Air HealthMate Plus is its medical grade 4-stage filter.

1. Pre-filter – Removes any large objects of pollutant particles like pet hair, human hair or large dust. This pre-filter is washable and permanent.
2. Medium Particle Pre-filter – The Austin Air HealthMate Plus can remove molds, spores and pollen with the next pre-filter.
3. Activated Carbon filter – A 15-lb Activated Carbon, Potassium Iodide Impregnated Carbon and Zeolite to help remove VOCs, formaldehyde, benzenes, chemicals, gases and odors.
4. True HEPA filter – After dual pre-filters, the True HEPA filter will only need to capture the tiniest particles. Using a Medical Grade 60-square-ft True HEPA filter, the Austin Air Healthmate Plus is a real deal to any contaminant problems in your large room.

The sound produced by the Austin Air HealthMate Plus is quite low on the lowest speed but loud on the high speed. It is advised to run it on low speed as often as possible.

Here are the pros/cons of the Austin Air HealthMate Plus:

Review: Austin Air HealthMate Plus Review.

Related post: Best air purifiers for office.

8) AIRMEGA 400S – High-end Smart Large Room Air Purifier

As the current flagship of Coway, we have high expectations for the Airmega 400S. Indeed, this air purifier maintains an excellent level of performance and functionality.

Airmega 400S is a large room air purifier that can cover spaces up to 1560 square feet. Before the official report of the Energy Star, Breathe Quality had recorded a CADR rating of 340 Dust/ 350 Smoke/ 400 Pollen (cfm) for this air purifier. Still, the Airmega 400S’s performance is more than enough to be the best large room air purifier.

In our air purifier ranking list, the Airmega 400S ranks A+ with an A in performance ranking, the same as its little brother Airmega 300S.

In this Airmega 400S machine, we will have:

1. Pre-filter – A powerful washable pre-filter is available to help you capture large objects of contaminants.
2. Max2 filter – A combination of both Activated Carbon Filter and True HEPA filter, this filter can capture up to 99.97% of airborne particles as small as 0.3 microns and reduce more than 99 percent of volatile organic compounds and fumes such as NH₃ and CH₃CHO.

Airmega 400S is a high-end smart air purifier, thanks to its smart-enabled features. It is the top choice for anyone who wants to set the air purifier and forget it. The air sensor works great, and the Wi-Fi capability feature works great, too. There is an exclusive Eco Mode, which automatically adjusts the fan speed based on the air quality, thus conserves electricity.

Here are the pros/cons of the Airmega 400S:

Review: Airmega 400S Review.

Related post: Best air purifiers for allergies.

9) AeraMax Professional 4 – Huge and Powerful

AeraMax secures the position 9 in our list of the best large room air purifier with the flagship AeraMax Professional 4, which competes directly with the aforementioned Blueair Pro XL. In our air purifier ranking list, the AeraMax Professional 4 ranks B- with an A in performance ranking.

With less fan power than the competitor, at around 440 cfm in general, the AeraMax Professional 4 is suggested to cover only 800 square feet. Again, we believe its power can deal with any room up to 1400 square feet.

AeraMax Professional 4 doesn’t compromise on anything, bringing the most patented 5-stage air cleaning system from AeraMax.

1. Pre-filter – AeraMax Professional 4 detaches the pre-filter out of the carbon filter, so the carbon filter can keep working effectively. The pre-filter can capture large particulates like dust and hair, and needs to be replaced after 6 months.
2. Activated Carbon Filter – The carbon filter works independently to capture strong odors or Volatile Organic Compounds (VOCs).
3. True HEPA filter – Next, all airborne contaminants must rest in the True HEPA filter of this air purifier, with a high efficiency of trapping 99.97% of any particles as small as 0.3 microns like pollen, ragweed and other allergens, viruses, germs, dust mites, mold spores, and pet dander.
4. AeraSafe Antimicrobial Treatment – The built-in protection right in the surface of its True HEPA filter, to prevent the growth of odor-causing bacteria, mildew, and fungi.
5. PlasmaTrue Technology – This is one kind of ionizer, that creates an ionized field to safely remove airborne pollutants. Can be switched on/off.

The Professional line of AeraMax upgrades the air filtration system from its own Commercial line to the max level. The AeraMax Professional 4 uses only high-quality air filters to deal with the majority of airborne pollutants.

AeraMax Professional 4 has its own Smart Sensor called EnviroSmart technology. It is highly accurate and quick in detecting changes in indoor air quality.

However, the AeraMax Professional 4 has a very expensive price tag, just like its closest competitor – the Blueair Pro XL.

Here are the pros/cons of the AeraMax Professional 4:

Review: AeraMax Professional 4 Review.

Related post: Best air purifier for mold.

10) IQAir GC MultiGas – High Performance for Dealing with Smoke

IQAir is a true giant in the air purifier industry, the only one to claim as the World’s Best HEPA Air purifier, with a foundation dating back 50 years. This brand is only dedicated to bringing out the luxury high-range air purifiers. The IQAir GC MultiGas is currently the most powerful air purifier for large room.

The air purifier has the highest-quality air filtration system and a powerful fan to keep your room clean quickly and effectively. The IQAir GC MultiGas has a coverage area of up to 1125 square feet. Notably, the IQAir GC MultiGas is equipped with a strong New Edition Fan. IQAir GC MultiGas can now achieve a CADR rating of 350 cfm. To top up with this high CADR, the IQAir GC MultiGas loads 5x air changes per hour.

In our air purifier ranking list, the IQAir GC MultiGas ranks B-, with an A in performance.

The bottom line is the perfect performance ranking of the IQAir GC MultiGas. IQAir proudly claim to be the #1 Air purifier for smoke, odors and MCS for a reason. Let’s have a look at the 4-stage air cleaning system.

1. HyperHEPA filter – You will have a powerful HyperHEPA H11 pre-filter. This True HEPA filter effectively captures 99% of particles down to 0.3 microns, and 95% of particles as small as 0.003 microns.
2. Cartridge-based activated carbon filter – This filter can remove VOCs and odors effectively because it is made with the highest quality ABS plastic.
3. Cartridge-based chemisorption – This stage destroys harmful chemicals, such as formaldehyde by an oxidation process. Any kinds of smoke or VOCs pass through these two cartridge-based filter will be absorbed completely.
4. Post-filter sleeve – A post-filter sleeve wraps each gas cartridge to prevent media dust from being released back into the air.

Because the IQAir GC MultiGas is constructed with high-quality materials, it can last for a very long time. The IQAir’s patented 3D UltraSeal leak-proof construction prevents air from leaking back into the room without passing through the MultiGas filters.

Here are the pros/cons of the IQAir GC MultiGas:

Review: IQAir GC MultiGas Review.

The IQAir GC MultiGas is primarily used to combat smoke, smells, volatile organic compounds (VOCs), formaldehyde, and other pollutants. If you’re concerned about common household dust, dust mites, pollen, or pet dander, you should consider the IQAir HealthPro Plus. This air purifier is $400 less expensive than the GC MultiGas model, but features an upgraded HyperHEPA filter from H11 to H13. Having said that, IQAir HealthPro Plus is capable of removing 99.97% of ultra-fine particles as tiny as 0.3 microns and 95% of particles as small as 0.003 microns. This, we feel, is the finest HEPA filter available at the moment. In our air purifier ranking list, the IQAir HealthPro Plus ranks B-, too.

Review: IQAir HealthPro Plus Review.

Related post: Best air purifiers for baby.