Top 10 Best Large Room Air Purifiers for 2018 (over 500 square ft)

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 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 (below 500 sq ft), we highly recommend you to read our list of the best small and quiet air purifiers in 2018.

A large room over 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 2018.

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

Base Comparison Table of Best Large Room Air Purifiers in 2018

This Comparison Table of the best large room air purifiers in 2018 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 2018.

ImageNameFilter TypesRoom Coverage (sq ft)Annual Filter ReplacementCheck ReviewCheck Price
best large room air purifiersTop 10 Best Large Room Air Purifiers for 2018 (over 500 square ft)IQAir GC MultiGasTrue HEPA Filter, Carbon Filter1125IQAir HyperHEPA FilterRead More
best air purifiers for officeTop 10 Best Large Room Air Purifiers for 2018 (over 500 square ft)Blueair Pro XLParticle Filter, Carbon Filter1180Blueair FilterRead More
best large room air purifiersTop 10 Best Large Room Air Purifiers for 2018 (over 500 square ft)Blueair Classic 605True HEPA Filter, Carbon Filter775Blueair Classic FilterRead More
best air purifiers for officeTop 10 Best Large Room Air Purifiers for 2018 (over 500 square ft)Austin Air HealthMate PlusTrue HEPA Filter, Carbon Filter1500Austin Air FR450A FilterRead More
best large room air purifiersTop 10 Best Large Room Air Purifiers for 2018 (over 500 square ft)AIRMEGA 400STrue HEPA Filter, Carbon Filter1560AIRMEGA FilterRead More
best large room air purifiersTop 10 Best Large Room Air Purifiers for 2018 (over 500 square ft)Rabbit Air MinusA2Advanced BioGS HEPA, Ionic Filter, Carbon Filter815Rabbit Air FilterRead More
best large room air purifiersTop 10 Best Large Room Air Purifiers for 2018 (over 500 square ft)Alen BreatheSmartHEPA Filter, Carbon Filter1100Alen BreatheSmart FilterRead More
Top 10 Best Large Room Air Purifiers for 2018 (over 500 square ft)Top 10 Best Large Room Air Purifiers for 2018 (over 500 square ft)Levoit LV-H133True HEPA Filter, Carbon Filter538Levoit LV-H133-RF FilterRead More
best large room air purifiersTop 10 Best Large Room Air Purifiers for 2018 (over 500 square ft)Biota Bot mm608ITrue HEPA Filter, Carbon Filter, Ionic Filter860Biota Bot FilterRead More
best large room air purifiersTop 10 Best Large Room Air Purifiers for 2018 (over 500 square ft)Whirlpool WPPRO2000True HEPA Filter, Carbon Filter508Whirlpool FilterRead More

Best Large Room Air Purifiers – The Most Powerful List in 2018

1) IQAir GC MultiGas Air Purifier – Our 2018 Champion

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?

First of all, IQAir GC MultiGas fits perfect for a large room. This air purifier can effectively cover an area of up to 1125 sq ft.

Most importantly, IQAir GC MultiGas features a powerful New Edition fan. With this new technology, GC MultiGas can have a Clean Air Delivery Rate (CADR) of 776 cfm. To top up with this high CADR, IQAir GC MultiGas loads 5x air changes per hour (ACH).
best large room air purifiers

Related post: Best air purifier for smoke in 2018.

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


  • Room coverage: 1125 sq ft
  • World class fan power
  • Perfect performance rating and Air filtration
  • Well-built with highest quality materials
  • 320 Degree input
  • Very quiet
  • Low power consumption
  • 5-year warranty
CONS


  • High-range cost

Review: IQAir GC MultiGas Review.

2) Blueair Pro XL – Our 2018 Runners-up

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 Pro XL can cover an extra large room of 1180 sq ft.

Blueair’s fan power is matchless, especially in their proud highest capacity air purifier. With a high CADR of 950 Dust/ 800 Smoke/ 900 Pollen (cfm) and 5X ACH, Blueair Pro XL is currently the highest CADR air purifier in the world.

best air purifiers for office

In terms of power, Blueair Pro XL is also impressive with two options of air filtration. As a tradition, if you buy one product from Blueair, there is no need to remember what are the filter types, because Blueair will always combine them into one for better installation.

  1. Particle Filter/ SmokeStop Filter – Choose between the 2 filter selections. Should it be the Particle Filter, the optimal choice for removing particle pollutants such as bacteria, viruses, pet dander, dust and pollen. Or Blueair 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.

With a top notch performance rating and a superior style, we should add Blueair Pro XL as the champion of this list. However, this list is based on performance/value. And no matter how impressive the performance of Blueair Pro XL is, Breathe Quality only can put this air purifier up as a runners-up.

Here is the pros/cons of Blueair Pro XL

PROS


  • Room coverage: 1180 sq ft
  • 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
  • The highest cost on the list
  • High power consumption

Review: Blueair PRO XL Review.

3) Blueair Classic 605 – Our 2018 Third place

Blueair Classic 605 prefers the classic design to modern of Blueair Pro XL. This air purifier stays high in our best large room air purifiers list because of the top-notch performance/value this device can bring to the users.

As a typical large room air purifier, Blueair Classic 605 can cover an area of 775 sq ft.

There is no need to tell again how powerful the fan power of Blueair air purifier is. With double the CADR of a normal large room air purifier with 500 Dust/ 500 Smoke/ 640 Pollen and an amazing 5X ACH, Blueair Classic 605 fan power is one of the greatest for large room.

best large room air purifiers

The air filtration process of Blueair Classic 605 is very simple, with only 1 unique filter. The HEPASilent filter combines electrostatic and mechanical filters like True HEPA filter, Ionizer and Activated Carbon filter in one layer. But don’t make mistake that this 1-layer filtration is weak. This filter can capture 99.97% of as small as 0.3 microns allergens, virus particles, pollen, mold and fungi particles thanks to the special designed filter technology.

With a lower fan power, this Classic 605 consumes much less energy than the successor Pro XL. However, due to the outdated HEPASilent Technology, this air purifier even has a higher noise level than the bulky Pro XL.

Expert tips: Normally you only get 1-year warranty for purchasing Blueair air purifier, but you can register for a maximum of 5-year warranty.

Here is the pros/cons of Blueair Classic 605

PROS


  • Room coverage: 775 sq ft
  • Fantastic fan power
  • Top-notch performance rating
  • Well-built with highest quality materials
  • 5-year warranty
CONS


  • Noisy than normal air purifiers
  • The machine is big and heavy

Review: Blueair Classic 605 Review.

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

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 2018.

Their Austin Air HealthMate Plus is notable for large room coverage of 1500 sq ft.

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 air purifiers for office

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 lbs of 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.

We notice little to no sound when using Austin Air HealthMate Plus. It is not a surprise because this high-range product is available in both schools and hospitals.

Here is the pros/cons of Austin Air HealthMate Plus

PROS


  • Room coverage: 1500 sq ft
  • Impressive fan power
  • Top-notch performance rating and Air filtration process
  • 360 Degree input
  • Well-built with highest quality materials
  • Very quiet
  • 5-year warranty
CONS


  • Lack of Smart features
  • Low CADR for the room coverage

Review: Austin Air HealthMate Plus Review.

5) AIRMEGA 400S – Top Rated Smart Air Purifier

As the current flagship in 2018 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 sq ft. 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 purifiers

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 in 2018.

Here is the pros/cons of AIRMEGA 400S

PROS


  • Room coverage: 1560 sq ft
  • Amazing performance rating
  • 360 Degree input
  • 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: Coway AIRMEGA 400S Review.

6) Rabbit Air MinusA2 – Best performance for value

As a mid-range air purifier, Rabbit Air MinusA2 will need to take more effort to be the best large room air purifier. With up to 815 sq ft in coverage, the winner in Breathe Quality best air purifiers in 2018 is a qualified candidate, but can not compete with the top three.

Rabbit Air invent a impressive technology for their fan. However, the innovation is not to increase the fan power. That’s why Rabbit Air MinusA2 only have a CADR of 193 Dust/ 180 Smoke/ 200 Pollen and a maximum of 4X ACH.

best large room air purifiers

As one of the best large room air purifiers in 2018, Rabbit Air sacrifices the fan power for the top-notch performance rating in air filtration process. We expect from the best air purifier no less than 6-stage air filtration system:

  1. Pre-filter – The polluted air must pass through a pre-filter, there it will capture all large particles, along with dust mites and some of pet hair.
  2. Medium Filter – Traps large pollen, pet dander, mold and dust particles that is small enough to bypass the Pre-filter.
  3. Advanced BioGS HEPA Filter – It is a True HEPA Filter that captures 99.97% of all allergens, virus particles, pollen, mold and fungi particles down to 0.3 microns. Rabbit Air advances their air filter process, therefore prolong optimal filter efficiency and filter life of their HEPA Filter.
  4. Customized Filter – Double the protection with a variety of customized filters for specific needs like Germ Defense, Pet Allergy, Odor Remover, or Toxin Absorber.
  5. Activated Carbon Filter – Eliminates odors, smokes and chemical vapors.
  6. Ion Generator – The last line of defense is an ionizer to capture even the tiniest particles of pollutant and trap them into other filters. Can be switched on/off.

In terms of performance rating, Rabbit Air MinusA2 will not lose to any brands. But with such low fan speed, this air purifier takes at least 4-5 times to clean a large room compared with the top three.

We love the Smart features in Rabbit Air MinusA2, and the fact that this air purifier is ultra quiet makes MinusA2 a better option for large bedroom.

Related post: Best air purifier for bedroom in 2018.

Here is the pros/cons of Rabbit Air MinusA2

PROS


  • Room coverage: 815 sq ft
  • Top-notch performance rating and Air filtration process
  • Well-built with highest quality materials
  • Ultra Quiet
  • Low power consumption
  • 5-year warranty
CONS


  • Low CADR and ACH
  • No Android app for Wifi version – SPA-780N

Review: Rabbit Air MinusA2 Review.

7) Alen BreatheSmart – Best for Customer Service

With a coverage of 1100 sq ft, Alen BreatheSmart is ready for a large room.

This air purifier is as good as a 300 CADR and 4X ACH for fan power. While it is not bad, it is nowhere near the most powerful champion of today best large room air purifiers in 2018 list.

best large room air purifiers

Notice that, Alen BreatheSmart is the only air purifier in this list without True HEPA Filter. Instead, as AlenCorp said that they want to reduce the noise and the cost of air filter replacement, Alen BreatheSmart makes use of 4 different HEPA Filters:

  1. The HEPA-Pure filter is the standard filter that captures most of the pet dander, mold spores and pollen.
  2. The HEPA-Silver filter is perfect for mold, germs and asthma related concerns.
  3. The HEPA-FreshPlus filter to remove smoke, VOCs and heavy chemicals.
  4. The HEPA-OdorCell filter can neutralize pet and diaper odors.

This air purifier is extremely quiet thanks to WhisperMax technology, to generate soothing sound to guarantee a peaceful sleep. No one could deny the importance of sleep, right?

Here is the pros/cons of Alen BreatheSmart

PROS


  • Room coverage: 1100 sq ft
  • Great Air filtration process
  • Well-built with highest quality materials
  • WhisperMax technology
  • Lifetime warranty
CONS


  • No True HEPA Filter
  • Bigger than average air purifiers
  • Quite noisy

Review: Alen BreatheSmart Review.


Best Large Room Air Purifiers – The Most Affordable List in 2018

1) Levoit LV-H133 – The Lowest Budget and the latest Levoit in 2018

The 2018 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 $300 Levoit LV-H133 with a room coverage of 538 sq ft.

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-H133 one of the top-notch performers in this low-range segment.

best large room air purifiersTop 10 Best Large Room Air Purifiers for 2018 (over 500 square ft)

As a portable low-range air purifier, Levoit LV-H133 has no different air filtration system compared with previous models. We still have a 3-stage air filter 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 absorbs smoke, odor, formaldehyde, VOCs and benzene.

Using a new technology, Levoit LV-H133 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-H133

PROS


  • Room coverage: 538 sq ft
  • Stunning performance rating
  • Solid-built
  • Very quiet
  • Low energy consumption
CONS


  • There is a bump in the price from previous models

Review: Levoit LV-H133 Review.

2) Biota Bot MM608I – Powerful device for the price

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 sq ft.

best large room air purifiers

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

Related post: Best air purifier for allergies in 2018.

Here is the pros/cons of Biota Bot MM608I

PROS


  • Room coverage: 860 sq ft
  • 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

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 sq ft.

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

best large room air purifiers

As a great performance air purifier in mid-range with a reasonable price in 2018, Whirlpool WPPRO 2000 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 WPPRO 2000 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


  • Room coverage: 508 sq ft
  • 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 2018 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 (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 life time, 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 best air purifier in 2018. Thank you!

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