Top 10 Best Large Room Air Purifiers in 2019 (over 300, 500 square feet)

There are always large rooms in this world, right? Maybe they are one or two large rooms in your home, a 5-star level Hotel room, or even a meeting hall. A large room covers a huge amount of air which can be very polluted. Here are the reasons you are looking for the best large room air purifiers for your needs.

  • You found out that your air purifier is insufficient for your large room (over 300 or 500 sq ft) or kind of useless.
  • You had a large room with lots of people (meeting halls, restaurants, hospitals) and you need a real large room air purifier to meet everyone’s demand.

Let’s not waste your precious time searching for many other website reviews and ratings. You will be overwhelming for sure! Meanwhile in Breathe Quality:

  • We do give honest reviews (both pros and cons) and a base comparison for all the air purifiers so anyone will guarantee to have the wisest choices.
  • We do not (in fact, we never) exaggerate one product just to let you click the links and buy that product blindly.
  • Air purifiers are for everyone. Believing that, we will give you the best air purifiers in all price range. To know the exact price of your air purifier, make sure to hit the Check price button.

Important Note: If you have a small room, we highly recommend you to read our list of the best small and quiet air purifiers in 2019.

A large room over 300 and even 500 sq ft is a huge space of airflow. To inhale and exhale such a large amount of air, an air purifier needs lots of fan power. And therefore, you can’t expect a cheap air purifier to do such a difficult task for you. We will bring you the top 7 most powerful large room air purifiers and 3 most affordable large room air purifiers in 2019.

UPDATED: We have updated our list of best large room air purifiers in 09/20/2019, as a result of a 6-month lab test. In Breathe Quality, we keep updating our posts whenever possible, and this time we will add the latest version of Dyson Pure Cool Link and Dyson Pure Cool Tower in the list of best large room air purifiers, as well as welcome the Blueair Classic 605 in the game. Our next update will be set for 3-6 months later, depending on the release of new products from the well-known air purifier brands. However, you don’t need to wait, because the air purifier market will never change so quickly.

Related posts: 

It’s time to dive into the best large room air purifiers.

Base Comparison Table of Best Large Room Air Purifiers in 2019

This Comparison Table of the best large room air purifiers in 2019 will help you have a quick overview of our list. The factor for comparison in this table is Filter Type of this air purifier, also we give the most concerned factors as Room Capability (of course you need it for your large room over 500 sq ft), and a shortcut to their True HEPA Filter replacements (HEPA Filter needs to be replaced after 6 months to 1 year).

Remember that you should check the reviews of the air purifiers in this comparison table. Just check the factors won’t help you know why we put these 10 devices as the best large room air purifiers in 2019.

ImageNameFilter TypesRoom Coverage (sq ft)Annual Filter ReplacementCheck ReviewCheck Price
best large room air purifiersTop 10 Best Large Room Air Purifiers in 2019 (over 300, 500 square feet)IQAir GC MultiGasTrue HEPA Filter, Carbon Filter1125IQAir HyperHEPA FilterRead More
Top 10 Best Large Room Air Purifiers in 2019 (over 300, 500 square feet)Top 10 Best Large Room Air Purifiers in 2019 (over 300, 500 square feet)Blueair Classic 605Particle/SmokeStop filter (HEPA Filter + Carbon Filter)770Blueair FilterRead More
Top 10 Best Large Room Air Purifiers in 2019 (over 300, 500 square feet)Top 10 Best Large Room Air Purifiers in 2019 (over 300, 500 square feet)Dyson TP04True HEPA Filter, Carbon Filter700Dyson FilterRead More
Top 10 Best Large Room Air Purifiers in 2019 (over 300, 500 square feet)Top 10 Best Large Room Air Purifiers in 2019 (over 300, 500 square feet)Austin Air HealthMate PlusTrue HEPA Filter, Carbon Filter1500Austin Air FR450A FilterRead More
best large room air purifiersTop 10 Best Large Room Air Purifiers in 2019 (over 300, 500 square feet)AIRMEGA 400STrue HEPA Filter, Carbon Filter1560AIRMEGA FilterRead More
Top 10 Best Large Room Air Purifiers in 2019 (over 300, 500 square feet)Top 10 Best Large Room Air Purifiers in 2019 (over 300, 500 square feet)Dyson DP04True HEPA Filter, Carbon Filter700Dyson FilterRead More
Top 10 Best Large Room Air Purifiers in 2019 (over 300, 500 square feet)Top 10 Best Large Room Air Purifiers in 2019 (over 300, 500 square feet)Alen BreatheSmart 75iTrue HEPA Filter, Ionizer, Carbon Filter1300Alen True HEPA FilterRead More
Top 10 Best Large Room Air Purifiers in 2019 (over 300, 500 square feet)Top 10 Best Large Room Air Purifiers in 2019 (over 300, 500 square feet)Levoit LV-H134True HEPA Filter, Carbon Filter710Levoit LV-H134-RF FilterRead More
best large room air purifiersTop 10 Best Large Room Air Purifiers in 2019 (over 300, 500 square feet)Biota Bot mm608ITrue HEPA Filter, Ionizer, Carbon Filter860Biota Bot FilterRead More
best large room air purifiersTop 10 Best Large Room Air Purifiers in 2019 (over 300, 500 square feet)Whirlpool WPPRO2000True HEPA Filter, Carbon Filter508Whirlpool FilterRead More

Best Large Room Air Purifiers – The Most Powerful List in 2019

1) IQAir GC MultiGas Air Purifier – Our 2019 Champion

 Previously in our list:   IQAir GC MultiGas.

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

So why Breathe Quality gave the gold medal to IQAir GC MultiGas?

best large room air purifier

It has the highest-quality air filtration process and an amazing fan power to keep cleaning your room quickly and effectively. As the champion of the large room air purifier, IQAir GC MultiGas can cover a room of up to 1125 square feet. But equally important, the IQAir GC MultiGas features a powerful New Edition Fan. With this new technology, GC MultiGas can have a Clean Air Delivery Rate (CADR) of 300 cfm. To top up with this high CADR, IQAir GC MultiGas loads 5x air changes per hour (ACH).

Related post: Best air purifiers for smoke.

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 is effectively capture 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 plastics.
  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 to the air.

IQAir GC MultiGas is well-built with highest quality materials, so you should not worry to much. The IQAir unique 3D UltraSeal no-leakage design will prevent air from escaping back into the room without being drawn through the GC MultiGas filters.

Here is the pros/cons of IQAir GC MultiGas:

PROS


  • Large Room coverage: 1125 square feet
  • World class fan power
  • Perfect air filtration system
  • Well-built with highest quality materials
  • 320° air distribution
  • Very quiet
  • Low power consumption
  • 5-year warranty
CONS


Review: IQAir GC MultiGas Review.

The IQAir GC MultiGas is mostly for dealing with the smoke, odors, VOCs, formaldehyde and other chemicals. If you have worried about the typical dust, dust mites, pollen or pet dander, you should look for the IQAir HealthPro Plus. This air purifier is $400 cheaper than its GC MultiGas brother, while upgrading the HyperHEPA from H11 to H13. That being said, IQAir HealthPro Plus can deal with even 99.97% of any ultra-fine particles as small as 0.3 microns, and 95% of particles as small as 0.003 microns. We believe this is the best HEPA filter at the moment.

best large room air purifier

Review: IQAir HealthPro Plus Review.

2) Blueair Classic 605 – Our 2019 Runners-up

 Previously in our list:   Blueair Pro XL.

Blueair is also a well-known brand in air purifier market for about 20 years. After many years of honing their experience, it is safe to say Blueair is a safe option for air purifiers, especially when it comes to a big air purifier machine for large room.

As the runners-up of best large room air purifiers list, Blueair Classic 605 can cover an extra large room of 775 square feet.

But don’t let the smaller room coverage fool you, the Blueair Classic 605 is one of the most powerful air purifiers at the moment, with a matchless fan power. The CADR rating of this air purifier is 500 Dust/ 500 Smoke/ 640 Pollen (cfm) and the ACH rating is 5X, which is even higher than the champion IQAir GC MultiGas.

best large room air purifier

In terms of power, Blueair Classic 605 isn’t as powerful as the previous Blueair Pro XL, but its high fan power nearly reaches the flagship of Blueair Pro series for only a third of the price. And the flagship of Blueair Classic series is using an all-in-one air filter as below.

  1. Particle Filter/ SmokeStop Filter – You can choose from the Particle Filter with the power to capture 99.97% of pollutants such as pollen, dust, pet dander, mold spores, viruses and bacteria down to 0.1 microns. Otherwise, you can pay more for SmokeStop Filter, which is most likely the combination of True HEPA filter and Activated Carbon filter.

Related post: Best air purifiers for dust.

After months of using the Blueair Classic 605, we believe this is the air purifier with most value for money you can get from the famous Blueair. It has top notch performance rating and a superior style, as well as high-end features that you can’t get in the Pro Series – the Smart control through Wi-Fi and Alexa, which is especially necessary in a large room.

Here is the pros/cons of Blueair Classic 605:

PROS


  • Large Room coverage: 775 square feet
  • Most powerful fan power in the world
  • World class performance rating and amazing air filtration
  • Well-built with highest quality materials
  • 5-year warranty
CONS


  • Bulky size and heavy
  • High power consumption

Review: Blueair Classic 605 Review.

3) Dyson TP04 – Our 2019 Third place

 Previously in our list:   Oransi Erik 650A.

The third position, again, sees a new shift for the Dyson TP04 – the flagship of the Dyson Pure Cool Tower series by Dyson. The British leading innovator in fan and air purifier market has released the fourth generation of their signature fan-air purifier combination

While the air purifier isn’t tested by AHAM for room coverage, we believe it can cool and clean an area of at least 700 square feet.

To deal with such large room, the Dyson TP04 has an unchallenged CADR rating of 600 to 770 cfm at maximum. The air purifier can deliver up to 93.5 gallons of purified air per second, thus clear the Oransi Erik 650A out of the list of best large room air purifiers. Moreover, the Dyson air purifier doesn’t have ACH rating, because it will continuously blow the air around your room, thanks to its cooling fan function.

best large room air purifier

Not only has an excellent fan power, the Dyson TP04 invents a high-quality air filtration system which passed many rigorous tests to meet the highest requirements.

  1. True HEPA filter – With the glass HEPA filter, the Dyson TP04 is able to capture 99.97% all airborne particles as small as 0.3 microns, including pollen, bacteria and pet dander.
  2. Activated Carbon filter – Removes household odors and gases such as formaldehyde, benzene and nitrogen dioxide.

Besides the top-notch performance of its air filtration system, the Dyson TP04 is truly quiet for such fan power. You will enjoy using the device without any problem of the noise level.

Most importantly, the Dyson TP04 is a real Smart air purifier, as it can be controlled via Wi-Fi or Alexa, just like the Blueair Classic 605. Moreover, the flagship tower air purifier of Dyson has Smart Sensor, so it can clean the room automatically with precision.

Here is the pros/cons of Dyson TP04:

PROS


  • Large Room coverage: 700 square feet
  • Great performance
  • Cooling power is really cool
  • High-end features
  • Unique design

CONS


  • Only 2-year warranty
  • The air filtration system isn’t the best

Review: Dyson TP04 Review.

4) Austin Air HealthMate Plus (HM450) – Best Medical Grade for Large Room

 Previously in our list:   Austin Air HealthMate Plus.

With the title of “The only Clinically Proven, Medical Grade Air Purifier”, Austin Air is always the first priority when considering a best large room air purifier. If you could afford a high-range budget machine, Austin Air is the brand mentioning the most in 2019.

Their Austin Air HealthMate Plus is notable for 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. This fan power is still extremely powerful for an air purifier, being double the CADR of the best low-range air purifiers like Coway AP-1512HH or Winix WAC9500.

best large room air purifier

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

  1. Pre-filter – To remove 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 – Just like Rabbit Air MinusA2, Austin Air HealthMate Plus can remove molds, spores and pollen from this 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 – With twice the 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 of this Austin Air HealthMate Plus is little at lowest setting, but is incredibly high at highest setting. It is recommended to run this air purifier at low setting more often.

Related post: Best air purifiers for allergies.

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

PROS


  • Large Room coverage: 1500 square feet
  • Impressive fan power
  • Top-notch performance rating and air filtration process
  • 360° air intake
  • Well-built with highest quality materials
  • 5-year warranty
CONS


  • Lack of Smart features
  • Low CADR for the room coverage
  • Too noisy at high setting

Review: Austin Air HealthMate Plus Review.

5) AIRMEGA 400S – Top Rated Smart Air Purifier

 Previously in our list:   AIRMEGA 400S.

As the current flagship in 2019 of Coway, we expect much from AIRMEGA 400S. Indeed, this air purifier still mark the impressive performance and features.

For a large room air purifier, AIRMEGA 400S can cover up to 1560 square feet. The CADR is not included in this AIRMEGA’s manual, but through many deep tests, Breathe Quality recorded an underrated CADR of 340 Dust/ 350 Smoke/ 400 Pollen. This CADR specs is quite not sufficient for a large room coverage of 1560 sq ft.

best large room air purifier

Just like Blueair, Coway is now combining their 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 both capture up to 99.97% of airborne particles 0.3 microns and reduce more than 99 percent of volatile organic compounds and reduces fumes such as NH3 and CH3CHO.

With Smart Enabled Feature, AIRMEGA 400S is also the top rated smart air purifier at the moment. This brand has an unique Eco Mode to change the fan speed depending on the air quality, and therefore save the energy.

Related post: Best air purifiers for office.

Here is the pros/cons of AIRMEGA 400S:

PROS


  • Large Room coverage: 1560 square feet
  • Amazing performance rating
  • 360° air intake
  • Well-built with highest quality materials
  • 5-year warranty
CONS


  • App receives many negative reviews
  • High cost filter replacement
  • Low CADR for the room coverage

Review: AIRMEGA 400S Review.

6) Dyson DP04 – Best Mid-range Air Purifier for Large Rooms

 Previously in our list:   Rabbit Air MinusA2.

Though the Rabbit Air MinusA2 is still the best air purifier in 2019, we believe that its fan power quite insufficient for a large room. After many rigorous tests, we decide to move the Dyson DP04 – the most powerful Dyson Pure Cool Link to be the next best large room air purifier.

Just like its brother, the Dyson DP04 can cover such large room of at least 700 square feet, and with a much more attractive price tag. As a combination of both cooling fan and air purifier, the Dyson DP04 can deliver 77 gallons of purified air per seconds, equaling a CADR of 600 cfm. Such fan power is three times better than our previous holder – the Rabbit Air MinusA2.

best large room air purifier

Just like its tower brother, the Dyson DP04 makes use of a simple but powerful 2-stage air filtration system:

  1. True HEPA filter – With the glass HEPA filter, the Dyson DP04 is able to capture 99.97% all airborne particles as small as 0.3 microns, including pollen, bacteria and pet dander.
    Activated Carbon filter – Removes household odors and gases such as formaldehyde, benzene and nitrogen dioxide.

In terms of performance rating, the Dyson DP04 can’t beat the ultimate 6-stage air filtration system of Rabbit Air MinusA2, but thanks to the high fan power, its glass HEPA filter is still able to clean the large room at least 2 times quicker.

We love the Smart features in Dyson DP04, and the fact that this air purifier is ultra quiet makes Dyson DP04 a better alternative for large bedroom.

Related post: Best air purifiers for bedroom.

Here is the pros/cons of Dyson DP04:

PROS


  • Large Room coverage: 700 square feet
  • Great performance
  • Impressive LCD display
  • Cooling power is really cool
  • High-end features

CONS


Review: Dyson DP04 Review.

7) Alen BreatheSmart 75i – Best for Customer Service

 Previously in our list:   Alen BreatheSmart.

Alen is the first and the best air purifier brand that delivers a Forever Warranty – a policy to guarantee the rights of their customers, as well as show the absolute confidence in their products. After many years of manufacturing the HEPA-type devices, finally we have a True HEPA flagship from Alen – the Alen BreatheSmart 75i.

With a coverage of 1300 square feet, Alen BreatheSmart 75i is the best air purifier for large rooms from this company.

Also, the fan power is strongly improved from the predecessor, as Alen BreatheSmart 75i has a CADR rating of 347 cfm, and can exchange the air 5 times per hour.

best large room air purifier

Now, Alen BreatheSmart 75i can boast about its powerful 3-stage air cleaning system, with the core of a great True HEPA filter. In addition, the Alen BreatheSmart 75i still combines its mechanical filters with the ionizer to push the limit of trapping 99.97% of allergens as small as 0.3 microns. You can select one from the 4 different True HEPA filters, depending on your demand.

  1. Pure – The standard True HEPA filter of Alen BreatheSmart 75i, which is able to capture 99.97% of as small as 0.3 microns pollutant particles such as dust, dust mites and pollen.
  2. Fresh – The next level HEPA filter will improve the first Pure, with an addition of Activated Carbon filter, to deal with the household odors and chemicals. This air filter is necessary for people who are sensitive to VOCs.
  3. Pet – Without the Activated Carbon filter, the Pet air filter uses the Alen’s patented Molecular Conversion Powder to ensure  heavy pet odors are destroyed at a molecular level.
  4. Heavy Odor – Alen BreatheSmart 75i changed the Molecular Conversion Powder in the Pet air filter to make the new Heavy Odor filter, which can remove the household odors from smelly kids/teenagers, kitchen garbage, and other everyday activities.

Related post: Best air purifiers for pets.

This air purifier is extremely quiet thanks to WhisperMax technology, to generate pink noise to guarantee a peaceful sleep. No one could deny the importance of sleep, right? That’s why this is also one best air purifier for large bedrooms.

Here is the pros/cons of Alen BreatheSmart 75i:

PROS


  • Large Room coverage: 1300 square feet
  • Great air filtration process, with True HEPA filter
  • Well-built with highest quality materials
  • WhisperMax technology
  • Lifetime warranty
CONS


  • Bigger than average air purifiers
  • High-range cost

Review: Alen BreatheSmart 75i Review.


Best Large Room Air Purifiers – The Most Affordable List in 2019

1) Levoit LV-H134 – The Best Bang for the Buck

 Previously in our list:   Levoit LV-H133.

The 2019 air purifier from Levoit proves that this brand can really make the air purifiers targeting large room (over than 500 sq ft). In the most affordable list of best large room air purifiers, we have a $400 Levoit LV-H134 with a room coverage of 710 square feet, larger than the previous Levoit LV-H133.

This air purifier upgrades to a CADR of 235 cfm from the previous 135 cfm of Levoit LV-PUR131. We believe that this improvement for fan power will make Levoit LV-H134 one of the top-notch performers in this low-range segment.

best large room air purifier

As a large room air purifier, Levoit LV-H134 has no different air filtration system compared with previous models. We still have a 3-stage air filtration system as below:

  1. Pre-filter – This nylon pre-filter can capture airborne large objects like dust, pet dander, pet hair, lint and fiber. This pre-filter is mostly for maximizing the True HEPA filter life.
  2. True HEPA filter – A True HEPA Filter can reduce 99.97% of down to 0.3 microns all contaminant particles like dust mites, allergens, pollen, and mold spores.
  3. Activated Carbon Filter – This Activated Carbon filter efficiently adsorbs smoke, odor, formaldehyde, VOCs and benzene.

Using a new technology, Levoit LV-H134 is more stable and more silent than even the air purifier for bedroom LV-H132. Also, this air purifier is one of the lowest energy-consuming air purifiers.

Here is the pros/cons of Levoit LV-H134:

PROS


  • Large Room coverage: 710 square feet
  • Stunning performance rating
  • Solid-built
  • Very quiet
  • Low energy consumption
CONS


  • There is a bump in the price from previous models
  • Still the same CADR rating from Levoit LV-H133

Review: Levoit LV-H134 Review.

2) Biota Bot MM608I – Powerful device for the price

 Previously in our list:   Biota Bot MM608I.

Biota Bot MM608I is the latest product of the great US air purifier manufacturer. Basically this product is an upgrade version of the successful Biota Bot MM208 for larger room, covers an area up to 860 square feet.

best large room air purifier

Biota Bot MM608I still features their 4-stage air purification, just like the previous MM208:

  1. Pre-filter – To remove larger particles like pet dander, hair and dust.
  2. True HEPA filter – A certified True HEPA filter always guarantee the effective removal of 99.7% of as small as 0.3 microns particles.
  3. Activated Charcoal filter – To combat with odors and smokes.
  4. Ionic filter – Instead of using UV-C Light filter like Biota Bot MM208, this new model will take use of an ionizer and can produce up to 10 million negative ions for your large room. Can be switched on/ off.

As a high-end air purifier, Biota Bot MM608I is well-built and has many smart features like Smart sensor or filter replacement indicator.

Related post: Best air purifier for mold.

Here is the pros/cons of Biota Bot MM608I:

PROS


  • Large Room coverage: 860 square feet
  • Good performance rating
  • Solid-built
  • 3-year warranty
CONS


  • Noisy at highest setting

Review: Biota Bot MM608I Review.

3) Whirlpool WPPRO2000 – Great value and performance

 Previously in our list:   Whirlpool WPPRO2000.

Whirlpool WPPRO2000 is the last one in Breathe Quality best large room air purifiers list. With 4 Fan Speed Settings, Whirlpool WPPRO2000 air purifier can cover up to 508 square feet.

This air purifier will come with a great CADR of 328 cfm and an ACH of 5X.

best large room air purifier

As a great performance air purifier in mid-range with a reasonable price in 2019, Whirlpool WPPRO2000 will bring to you a common 3-stage air filtration process:

  1. Pre-filter – This pre-filter will trap large objects like dust, human hair, and pet hair. This pre-filter need to be cleaned regularly and replaced every three months.
  2. Activated Carbon Filter – This Activated Carbon filter traps odors and pre-cleans the air before it reaches the HEPA filter.
  3. True HEPA filter – A True HEPA Filter can reduce 99.97% of as small as 0.3 microns airborne particles.

Out of the box, Whirlpool WPPRO2000 will bring to you additional features like a Smart Screen Touch. This latest technology air purifier is also the only one you can find for Auto Air Quality Monitor within Whirlpool brand, to help you adjust the cleaning power for saving energy. The indicator for Air Quality Monitor has three colors: blue/yellow/red.

Here is the pros/cons of Whirlpool WPPRO2000:

PROS


  • Large Room coverage: 508 square feet
  • Great performance rating
  • Solid-built
  • Very quiet
  • 5-year warranty
CONS


  • The air purifier is somehow heavy

Review: Whirlpool WPPRO2000 Review.

Best Large Room air purifiers in 2019 Buying Guide

On this page, you’ll find everything you need to quickly make the right decision on which top rated air purifier to get for your large room. The most useful buying guide we could give you is to check the area (large room coverage) your air purifier can cover. Because if you are using a 200 sq ft air purifier for a, well, 500 sq ft space, even in the best ACH (Air changes per hour) your air purifier still can’t purify your room air. The outcome is the reduction of your air purifier’s filter lifetime, as well as energy wasting. We guess you understand why you need to find the most suitable air purifier for your large room thoroughly, right?

To ensure that your air purifier will work well, all you have to do is check the square footage rating of the device that you’re interested in buying. Then, compare it to the size of the room that you want to use it in. The device has a square footage rating that’s equal to (=) or greater than (>) the intended room size, then it’s a good choice. If not, DO NOT BUY THIS.

If you need a complete buying guide for your large room air purifier, for example you want to know about the technical specifications like ACH, CADR, you can read more here.

We hope our best large room air purifier list will help you choose your suitable air purifier in 2019. Thank you!

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