Top 10 Best Large Room Air Purifiers in 2023 (over 500 square feet)

1) Blueair HealthProtect 7770i – Our 2023 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, ranking S- with S in performance. This air purifier can cover an extra large room of 700 square feet, verified by the Association of Home Appliance Manufacturers (AHAM).

However, do not be fooled by the reduced room coverage; the Blueair HealthProtect 7770i is one of the most powerful air purifiers on the market today, 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 nearly reaches the Blueair Pro XL for only a third of the price. Blueair HealthProtect 7770i’s internal air filtration system is the latest HEPASilent Ultra technology made by Blueair, with 2 stages as below:

1. Pre-filter – For best performance, you’re required to clean the pre-filter regularly. It can trap large objects of pollutants, to prolong the life time of the Smart Filter.
2. Smart Filter – The most advanced filter technology of Blueair, it 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 rating and a superior style, as well as high-end features that you can’t get in the Pro Series – Smart control through Wi-Fi and Alexa, which is especially necessary in a large room. Finally, the Smart Sensor is extraordinary, as you can simply set it and forget it.

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

Review: Blueair HealthProtect 7770i Review.

Related post: Best air purifier 2023.

2) Levoit Core 600S – The Best Bang for the Buck, Rank A+

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 room coverage of 700 square feet.

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

Levoit Core 600S is a large room air purifier with a signature air filtration system from the very first Levoit air purifier. We still 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 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) AIRMEGA 400S – Top Rated Smart Air Purifier, Rank A+

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 big room air purifier that can cover an area of up to 1560 square feet. Although the CADR is not stated in the documentation for this AIRMEGA, after doing several extensive tests, Breathe Quality recorded an underrated CADR of 340 Dust/ 350 Smoke/ 400 Pollen. This CADR specs is not sufficient for a large room coverage of 1560 sq ft.

In our air purifier ranking list, the Airmega 400S ranks A+ with an A in performance, together with its little brother Airmega 300S. However, thanks to its high CADR rating, the Airmega 400S secures position 3 in our list of the best large room air purifiers.

Just like Blueair, Coway is now combining its air filters to become one for better installation. 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 also the top-rated smart air purifier at the time, thanks to its smart-enabled features. This brand has an exclusive Eco Mode that 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.

4) Airdog X8 – Filterless to save Annual Cost, Rank A

Airdog X8 is the flagship of Airdog USA, or the Silicon Valley Air Expert company. With unmatched fan power, and no need for True HEPA filter, the Airdog X8 shows that it can win our list of the best large room air purifier.

Airdog X8 is suggested for a room size of 1000 square feet by the manufacturer, and with the CADR rating of 470 cfm in general, this is one of the best air purifiers for fan power we’ve ever tested.

In our air purifier ranking list, the Airdog X8 ranks A with an A- in performance.

Unlike other air purifiers in this list with only mechanical air filters, the Airdog X8 uses an ionizer to replace the HEPA filter in trapping airborne impurities.

1. Pre-filter – The polluted air must pass through a pre-filter screening, where it traps large particles of pollutants like hair and dander. It is washable and permanent.
2. Ionizer – The ionic field is created on the surface of the generator wires (or emitter wires) and is also the main filtration method of the Airdog X8. It can destroy even the 0.0146 microns ultra-fine particles, such as bacteria, germs and viruses. In addition, it is also effective in removing the pet dander, pollen, dust and other particles that are larger than 0.3 microns.
3. Collecting Plate – While not a layer of protection, the collecting plate is necessary to collect the harmful particles inside. These heavy-duty but dishwasher-safe plates can easily be cleaned, saving you from expensive replacement filters.
4. Composite Catalyst – The last filter of this Airdog X8 is actually an Activated Carbon filter, which removes odors, smoke and chemicals. This is also where the Airdog X8 removes the ozone emission, to guarantee the cleanest air quality for your home.

The Airdog X8 wants to be standout in the marketplace with full of HEPA air purifiers, relying only on its powerful ionizer to deal with airborne ultra-fine particles, from dust, dust mites, pollen, pet dander to even bacteria, germs and viruses. We’ve tested it rigorously, just to confirm that it has great performance.

Together with its raw power, the Airdog X8 features high-end smart features, including Smart Sensor. This air purifier automatically calculates the amount of particles in the air, then the Auto Mode simply adjusts its speed according to the current air quality level.

Here are the pros/cons of the Airdog X8:

Review: Airdog X8 Review.

Related post: Best air purifiers for dust.

5) Medify MA-112 – High fan power

With an unmatched fan power, together with a H13 True HEPA filter, the Medify MA-112 officially wins a slot in our list of the best large room air purifiers. This is the flagship of Medify Air, packing with the internal power that you could expect from a flagship, with much lower price.

Medify MA-112 is suggested for a room size of 1200 to 2400 square feet by the manufacturer, and with the AHAM’s CADR rating of 400 Dust/ 450 Smoke/ 450 Pollen (cfm), this is one of the best air purifiers for fan power we’ve ever tested.

In our air purifier ranking list, the Medify MA-112 ranks C+.

The Medify MA-112 uses its signature air filtration system with 4 stages.

1. Pre-filter – A layer of pre-filter covers the True HEPA filter, to prolong the life time of the core filter, by trapping the large objects of pollutants like fur, hair and large dust.
2. True HEPA filter – The True HEPA Filter (graded H13) that captures 99.97% of as small as 0.3 microns allergens, virus particles, pollen, mold and fungi particles.
3. Activated Carbon filter – Uses substantial carbon filter with carbon pellets to remove toxic odors and formaldehyde.
4. Ionizer – Produces negative ions to charge particles and trap them inside the unit. Can be switched on/off.

With these traits, the Medify MA-112 is easily one of the best large room air purifiers. It can clean a large room in no time, and with the highest efficiency you could expect from an air purifier that normally costs you $200 higher.

The Medify MA-112 also features the Smart Sensor, to automatically detect the changes in indoor air quality, and adjust the fan speed accordingly.

Here are the pros/cons of the Medify MA-112:

Review: Medify MA-112 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 highest performance at a ridiculously high price. However, at rank B in our air purifier ranking list, the Blueair Pro XL shows its prominence with an A+ in performance.

The Blueair Pro XL comes with an AHAM’s CADR of 950 Dust/ 800 Smoke/ 900 Pollen (cfm), which is the highest specs we’ve tested. It is recommended for just 1180 square feet, but we believe that nothing can beat it at 2000 square feet.

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

1. Particle Filter/ SmokeStop Filter – Choose between the 2 filter selections. 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 Blueair Pro XL allows it to run quietly and save energy, while still achieving high performance. In fact, the Blueair Pro XL can capture 99.97% of pollutant particles down to 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 the basic features.

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

Review: Blueair Pro XL Review.

7) AeraMax Professional 4 – Huge and Powerful, Rank B-

AeraMax secures the position 7 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, AeraMax Professional 4 ranks B- with an A in performance.

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, which 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 big and high-quality air filters so it can deal with the majority of airborne pollutants.

AeraMax Professional 4 has its own Smart Sensor in the name of 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.

8) IQAir GC MultiGas – Old Champion, Rank B-

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. 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 Clean Air Delivery Rate (CADR) of 350 cfm. To top up with this high CADR, IQAir GC MultiGas loads 5x air changes per hour (ACH).

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

However, room coverage and fan power is just one criteria to decide the champion. The bottom line is the perfect performance rating of IQAir GC MultiGas. IQAir proudly claim to be the #1 Air purifier for smoke, odors and MCS not without a reason. Let’s have a look in the 4-stage Air Cleaning system below:

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, you need not be concerned. 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.

9) Blue Pure 121 – The most powerful air purifier for under $500

It is normal to find 2 air purifiers from Blueair on any lists of the best large room air purifiers, because the company is really dedicated in making air purifiers with high fan power. The Blue Pure 121 is only suggested for a room size of 620 square feet, but we all believe it is able to clean a much larger room with ease.

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

Blue Pure 121 still features the exclusive Blueair air purification 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 features, 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 rated 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.

10) Austin Air HealthMate Plus (HM450) – The Best Medical Grade 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.

We can easily measure the fan power of this Austin Air flagship with a 5X ACH and 400 cfm CADR. In our air purifier ranking list, Austin Air HealthMate Plus ranks C+, with an A+ in performance.

One advantage for 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 – 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-filter, the True HEPA filter will only need to capture the tiniest particles. Using a Medical Grade 60-square-ft True HEPA filter, Austin Air Healthmate Plus is a real deal to any contaminant problems in your large room.

The sound produced by this Austin Air HealthMate Plus is somewhat low on the low setting but quite loud on the high speed. It is advised that this air purifier be operated on the low setting more frequently.

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

Review: Austin Air HealthMate Plus Review.

Related post: Best air purifiers for office.