10 Best Large Room Air Purifiers of 2021 Compared & Reviewed

Best Large Room Air Purifier
Photo: Coway

It is always important to have an effective way of cleaning the air in your room to make it healthy and also ensure your space is more comfortable.

And if you have big rooms, you will need the best larger room air purifier.

Large room air purifiers are more powerful and high capacity units designed to cover rooms that are upwards of 600 square feet.

These models also have the advantages of longer run times, and they will also have more effective multi-stage filtration systems.

And to help you pick the ideal one for your large rooms, here we look at 10 top-rated models and explain what to looks for when choosing one.

Things To Check Before Buying Large Room Air Purifier

How to Buy the Best Large Room Air Purifier
Photo: Oransi

1. Types of Air Purifier Filters

Because the filter is what will do the actual filtration, it should be one of the first things that you consider when shopping for the best air purifier for large rooms. There are different types available and each will be ideal for different situations.

– HEPA Filters

HEPA filters are the most commonly used of the 5 common types and most modern purifiers will include them as part of their multi-stage filtration systems.

What makes these filters popular is that they will trap the widest range of contaminants, from dust and allergens to visible smoke and bacteria.

– Ionizers

Ionizers will work by emitting some negatively charged ions that will then latch on the contaminants.

This makes the contaminants easy to sack out and also causes them to fall to the ground as they become heavier. The purpose of the filter is to knock out the contaminants from the air.

– Ozone Generators

The ozone generators will create ozone in the room, which then seeks out the contaminants, and hence purifying the air.

While these machines are still effective enough at air purification, they have some health concerns and are hence not very common.

– UV Light Air Purifiers

UV air purifiers are the most effective at removing living organisms from the air in the room. They can kill everything from viruses to bacteria.

With these purifiers, you get clean and sterile air, and they are also quite durable as most will last thousands of hours.

However, they are not very effective for non-microorganism contaminants.

– Activated Carbon Filters

Activated carbon filters come second only to HEPA when in terms of popularity.

These filters will use activated carbon to trap fumes, odors, and gases to ensure your air smells clean and fresh.

Their only drawback is that they are not good for removing non-gaseous particles in the air.

2. Coverage Area

Any purifier that you choose needs to be able to cover the space that you have. Hence, you should not just settle for something just because it is meant for larger rooms.

By considering the size of the room you intend to use the unit in, you should be able to choose a model that will provide adequate coverage for you.

Most will cover an area of between 500 and 2,000 square feet, and so there is something for everyone out there, and you just need to choose what works best for you.

3. Clean Air Delivery Rate (CADR)

The CADR measures how well the purifier can clean the air in particular room size. Many purifiers will indicate it in their description to give you a way of comparing the effectiveness of the device with others.

A high CADR means that the purifier will clean the air in the room more times every hour. Hence, the larger the room the higher the clean air delivery rate that you will need.

Something with a 350 cubic feet/minute CADR like the Blueair Pure 121 should be good for a standard size room, but if you have a larger room you will need a little more than this.

4. Energy Efficiency

Since you will often need to run the purifier for several hours every day, it is important to make sure that the model you choose uses less energy to keep your electricity bills down.

Typical air purifiers will use anything 5 to 200 watts, and so you can be sure there is something out there for you. But, to make sure that get an energy-efficient device, you need to make sure what you buy has an energy star rating.

5. Large Room Air Purifier Speed Settings

Being able to adjust the speed on your air purifier will ensure you can customize the performance to suit your specific situation.

Something with at least 3-speed settings like the Blueair Pure 121 is often good enough, but if you can get even more than this, the better as the machine will be more customizable.

6. Noise Level of Large Room Air Purifier

Air purifiers will always pair their HEPA or carbon filters with a fan mechanism for circulating the purified air. Like any other fan type, these fans can be quite loud, and hence making the appliance quite noisy.

That said, the noise level varies from one model to the other as some will be loud and others whisper quiet.

Therefore, as you choose one of these machines, you need to check the noise level, and if you are planning to use it in your bedroom, go for something with a low noise rating (under 50 dBA).

7. Maintenance

You will also need to keep the maintenance in mind when shopping for the best large room air purifier. And here you need to check both the cost of maintenance and how easy it will be for you.

Models that use HEPA and activated carbon filters will require you to change the filters. To make sure the unit will be cheap to maintain for you, it is important to check the cost of the filters and how often they will need replacement.

A model that is easy to take apart for cleaning and filter replacement will also make maintenance more effortless for you.

10 Best Large Room Air Purifiers Reviewed




RabbitAir SPA-700A

1. RabbitAir SPA-700A (Best Overall)

  • 6-stage filtration
  • Odor remover filter
  • Can be mounted or stand-alone
  • Smart light sensor
Levoit LV-H134

2. Levoit LV-H134 (Best Budget)

  • More budget-friendly
  • Smart auto mode
  • Laser dust sensor
  • 360° suction
Oransi OVHM80

3. Oransi OVHM80 (Best HEPA Purifier)

  • V-HEPA filter
  • 34 dBA noise-rating
  • Intelligent air quality monitor
  • Energy-star certified
Coway AP-2015F(G)

4. Coway AP-2015F(G) (Best for Extra-Large Room)

  • 1,560 square feet coverage
  • 5 fan modes
  • Smart operation
  • Filter lifetime indicator
Blueair Pure 121

5. Blueair Pure 121 (Most Compact)

  • Compact design
  • One-button control
  • 360° airflow
  • Energy star rated
Alen BreatheSmart-Pure-Espresso

6. Alen BreatheSmart-Pure-Espresso (Ultra-Quiet)

  • Super-quiet WhisperMax technology
  • True HEPA filter
  • Air quality sensor light
  • 4 fan speed settings
Dyson 244314-01

7. Dyson 244314-01 (Multifunctional)

  • Multifunctional design
  • WiFi-enabled
  • 350° oscillation
  • 10 air speed settings
Coway 111012

8. Coway 111012 (Smart Purifier with a Wide Coverage)

  • Smart app-enabled
  • 1,560 square feet coverage
  • LED alert ring
  • Powerful dual suction
Blueair 605

9. Blueair 605 (High Delivery Rate)

  • 500 cubic feet/minute CADR
  • HEPASilent filtration technology
  • WiFi-enabled
  • Steel body
Inofia US PM1539

10. Inofia US PM1539 (Simple but Effective)

  • Simple and easy to use design
  • Smart air monitoring
  • Double activated filters
  • Automatic mode

1. RabbitAir SPA-700A – Best Overall

RabbitAir SPA-700A

Photo: RabbitAir

  • Coverage Area: 700 to 815 sq. ft.
  • Filtration Technology: Advanced HEPA filtration
  • Filtration Stage: 6

The 6 filtration stages of the RabbitAir SPA-700A are more than what you get from all other models on our large room air purifier review, and this is what makes this our best overall model.

With more filtration stages, this unit will be more effective at cleaning out the air, and it will remove everything from large dust particles to common household odors.

And you will not be restricted to use it from just one place in the house as it has flexible mounting options to allow you to either mount or use it as a standalone unit.

Overall this is a quieter model as it has a noise rating of between 20.8 and 45.6 dBA depending on the setting. Many users will also love that it has a smart sensor light that will switch it to sleep mode automatically when it gets dark.

In case of a power outage, this unit seems to lose your preferred settings, and so you have to set it again. And while this can be a little inconvenient, it is not a very big deal and should not prevent you from getting this wonderful machine.


  • More effective multi-stage filtration
  • Traps odors for clean and fresh smelling air
  • Flexible mounting options
  • Switches to sleep mode automatically
  • Quieter operation


  • Does not preserve setting

2. Levoit LV-H134 – Best Budget

Levoit LV-H134

Photo: Levoit

  • Coverage Area: 710 to 1,170 sq. ft.
  • Filtration Technology: H13-grade true HEPA and activated carbon filters
  • Filtration Stage: 3

Anyone shopping for the best air purifier for large rooms on a tighter budget will love Levoit LV-H134 because, despite being more affordable, it still does an amazing job. What’s more, it will cover up to 1,170 square feet.

This machine will make use of an automatic mode that will adjust the fan speed accordingly to ensure maximum efficiency and make this a more energy-efficient model. Also, there is a laser dust sensor that will give you real-time updates on the air quality.

With the 1 to 12 hours timer, you can set this purifier to run as long as you want. And because it has powerful 360-degree suction, it will be very effective at circulating air.

The quality of the wheels on this Levoit air purifier is a little wanting and could be improved, but they still do a great job when it comes to moving the unit around.


  • Relatively more affordable
  • Energy-efficient and effective
  • Real-time air quality status
  • Handy built-in timer
  • Powerful suction from all directions


  • Wanting wheels quality

3. Oransi OVHM80 – Best HEPA

Oransi OVHM80

Photo: Oransi

  • Coverage Area: Up to 600 sq. ft.
  • Filtration Technology: V-HEPA and activated carbon filter
  • Filtration Stage: 3

Oransi OVHM80 uses the highly efficient V-HEPA filter that will provide more effective air filtration as it traps up to 98% of the contaminants. This and the activated carbon filter that makes up the 3rd stage will ensure you get the purest air quality.

Monitoring the air quality is an automatic and precise process thanks to the intelligent air quality monitor, which will also adjust the fan speed automatically to maintain the best quality air throughout.

The clear electronic display makes operation and monitoring the machine even more effortless. And with the energy start certification, you can be certain this will be a more energy-efficient machine for you. Overall, this is also a quieter model with a 34 dBA noise rating.

Replacement filters for this purifier seem quite pricey, but this is only because they are more efficient and effective. They are also more long-lasting, and so you will not need very frequent replacements.


  • Highly efficient filter
  • Smart air quality monitoring
  • Clear electronic display
  • More energy efficient
  • Super quiet operation


  • Expensive filters

4. Coway AP-2015F(G) – Best Extra-Large Room Air Purifier

Coway AP-2015F(G)

Photo: Coway

  • Coverage Area: Up to 1,560 sq. ft.
  • Filtration Technology: Activated carbon and True HEPA filter
  • Filtration Stage: 4

For the homeowners that have larger than average rooms, the Coway AP-2015F(G) is our best extra-large room air purifier as it will cover up to 1,560 square feet, which is the largest coverage on our list.

This unit is also highly effective at purifying the air as it makes use of activated carbon and a true HEPA filter to get rid of over 99% of all common air contaminants from larger particles to bad odors.

There are different fan modes to make it easy to customize the unit to suit your preferences. What’s more, this purifier will adjust the fan speed automatically based on the air quality of the room.

With the dual suction, this purifier will also clean up the air much faster to ensure that you can breathe faster and more efficiently. And you will never have to guess when to change the filters as it has some handy indicators to alert you.

Given the larger size of this purifier, it seems to take up relatively more room. However, it makes up for this with its relatively larger capacity.


  • Covers a wider area
  • Multiple fan modes for increased versatility
  • Automatic fan speed adjustment
  • Handy filter indicators
  • More powerful dual suction


  • Takes up more room

5. Blueair Pure 121 – Most Compact

Blueair Pure 121

Photo: Blueair

  • Coverage Area: 600 to 700 sq. ft.
  • Filtration Technology: Activated carbon
  • Filtration Stage: 3

At just 28.4 inches high and 13 inches wide, the Blueair Pure 121 is a more compact air purifier that will take up less space in the room when compared to other models.

Besides the compact size, this is also an easy-to-use model with a one-button operation to ensure you do not waste a lot of time trying to figure it out. And the filter changes are quick and easy.

This Blueair product is energy star rated, which is an indication that it is highly energy efficient. With the 360-degree airflow, this purifier will circulate the air in all directions in the room. You can also be sure it will not distract you when sleeping as it runs on low fan speeds to minimize noise.

There is a weird smell that emanates from the machine when new, but after a few uses the odor dissipates, and you get that clean and fresh smell you desire.


  • Compact and more space-saving
  • Simple to operate
  • Uses less energy
  • Circulates the air in all directions
  • Runs at lower fan speed to minimize noise


  • Weird smell when new

6. Alen BreatheSmart-Pure-Espresso – Ultra-Quiet

Alen BreatheSmart-Pure-Espresso

Photo: Alen

  • Coverage Area: Up to 1,100 sq. ft.
  • Filtration Technology: True HEPA-silver filter
  • Filtration Stage: 3

This Alen purifier uses advanced WhisperMax technology to ensure you get a soothing environment as it will be super quiet. The sound that it produces is a pink noise that will help promote sleep.

There are 4-speed settings on this product, which is more than what you get with most others in its class, and it means it will also for more customization. Also, the unit senses the air quality automatically and makes fan speeds adjustments accordingly, which is highly convenient.

Filtration is guaranteed to be more effective thanks to the true HEPA filter. And you can easily tell when you need to change the filter as there is a filter life indicator. This unit is one of the best air purifiers for 1000 sq. ft. rooms as it can cover up to 1,100 square feet.

This model is one of the priciest on our list, and so if you are shopping on a budget, it can be a little out of reach, but the quality and performance make it worth every buck. Also, the chemical smell is typical of many purifiers when new, but it dissipates fast.


  • Super-quiet operation
  • Provides more speed settings
  • Senses the quality of air automatically
  • Uses a highly effective filter
  • Filter life indicator included


  • A little expensive
  • Strange chemical smell when new

7. Dyson 244314-01 – Multifunctional Large Room Air Purifier

Dyson 244314-01

Photo: Dyson

  • Coverage Area: Over 290 sq. ft.
  • Filtration Technology: HEPA and activated carbon filters

If you love an appliance that you can use for more than one purpose, the multifunctional Dyson 244314-01 should impress you as it will work as both a fan and heater.

This model will sense the quality of the air automatically and give you real-time updates, while also initiating the required purification to ensure you have good quality air throughout.

Dyson 244314-01 is a smart unit as it is both WiFi and Alexa enabled. Also, the purifier will come with remote control for even more effortless operation.

You can be confident that you will get maximum coverage as this unit has 350-degree oscillation, and you also get to choose from 10 fan speed options for more customization.

The fan on this unit can be quite loud, and this more so at the higher settings. However, the sound is quite soothing and will even help make it easier to sleep. When compared to others on our list, the 290 square feet tested coverage is smaller, but this unit still works well for large rooms.


  • Works as both space heater and fan
  • Senses air pollution automatically
  • Comes with a remote control
  • Includes WiFi connectivity
  • Reaches every corner of the room


  • Fan can be quite loud
  • Smaller coverage

8. Coway 111012 – Smart Purifier with a Wide Coverage

Coway 111012

Photo: Coway

  • Coverage Area: Up to 1,560 sq. ft.
  • Filtration Technology: Activated carbon and true HEPA filters
  • Filtration Stage: 3

The smart functionality of the Coway 111012 is what makes it such an amazing product. This purifier has a myriad of smart features that will range from smart app control to automatic night mode.

Air monitoring is automatic and real-time as this unit uses a brightly colored LED ring to indicate the quality of the air. The purification is then adjusted automatically using this information.

With the powerful dual suction, the dirty air will be sacked in and cleaned fast to ensure you get clean and fresh air within the shortest time. And because there is a filter life indicator, it will be easy to tell when you need to replace the filters.

Setting up the app is quite tedious and takes more time than expected, but once you have it running it will be amazing.


  • Smarter performance and operation
  • Real-time air monitoring
  • Automatic fan speed adjustment
  • Powerful air suction
  • Easy to tell when to change filters


  • Tedious app setup

9. Blueair 605 – High Delivery Rate

Blueair 605

Photo: Blueair

  • Coverage Area: 700 to 800 sq. ft.
  • Filtration Technology: HEPA silent technology
  • Filtration Stage: 1

Blueair 605 will help clean your air faster and more efficiently when compared to other units out there as it has a CADR of 500 cubic feet per minute and 5 air changes per hour. This guarantees you will always have the finest quality air when it is running.

Also, it uses HEPASilent technology to ensure the impressive clean air delivery rate will be achieved without making too much noise. This technology is also one of the reasons why this will be a very ideal model more asthmatics.

The steel housing is highly durable and is guaranteed to give you many years of great service. And when it comes to the operation, this unit will also give you an easier time as it is both Alexa and WiFi compatible for smart operation.

While this is the priciest item on our large room air purifier reviews, it seems to justify the cost with the overall performance and build quality.


  • Higher clean air delivery rate
  • Superior purification performance
  • Works with both WiFi and Alexa
  • Highly durable housing
  • Low noise rating


  • Quite expensive

10. Inofia US PM1539 – Simple but Effective

Inofia US PM1539

Photo: Inofia

  • Coverage Area: Up to 1,056 sq. ft.
  • Filtration Technology: Activated carbon and HEPA composite filter
  • Filtration Stage: 3

Inofia US PM1539 proves that a purifier does not have to be complicated to give you good service because, despite the simple design, it is still a highly effective model.

This unit also has smart functionality as it will use some advanced sensors to monitor the air quality in the room automatically. With the bright LED, you can easily monitor the quality of the indoor air.

The purifier has both an automatic and manual mode, and you can easily switch between the two at the touch of a button.

Because this unit uses double activated carbon filters, it will remove both particulate and odor from the air. And overall, this is a safe and reliable purifier with different safety certifications.

The light for the sleep modes is quite bright, and can hence be distracting when trying to sleep. However, many users will find it soothing as they use this machine more and more.


  • Highly effective despite the simple design
  • Monitors air quality automatically
  • Easy switch between auto and manual modes
  • Filters out both particle contaminants and odors
  • Safe and reliable


  • Sleep mode light is a little too bright


Purifying the air in large rooms does not have to be complicated with a good machine to help you out. And with our reviews of the best large room air purifiers above, finding it should be easy now.

Every model on our list will be very effective, but the RabbitAir SPA-700A is our best overall model as it has efficient 6-stage filtration and also allows for more flexible use.

And for those looking for something more cost-effective, the Levoit LV-H134 will be a great choice for you as it is more affordable.