Best Large Room Air Purifiers

In your home area, you are likely to have a large room or extra. Here, we are talking about rooms of over 500 sq ft. These kinds of rooms require a large amount of air circulation. Any amount of pollution in such rooms require an big air purifiers with  powerful filtration systems, highest CADR ratings plus a high maximal airflows to clean the air as well as circulate fresh and clean air around.

Dust, smoke, and especially cigarette smoke, cooking fumes, and pollen remain a stubborn pollutant. They are persistent, however much you do vacuum cleaning or open your large room windows. In this article, I will take you through some of the best large room air purifiers in the market. Point to note is that this category has each brand giving their best A game. 

As you scan through, the question in mind should be what is the best air purifier for large rooms? We have touched base on 10, their pros and cons as well as give you a highlight on what you should consider before buying the powerful air purifiers for a large room.

Please read on…

Best Large Room Air Purifiers

This article will be reviewing some of the best air purifiers in the category of best air purifiers for large rooms and extra rooms.  However, it does not imply that they are the only ones in the category of best large room air purifiers. In my subsequent articles, I will be reviewing in addition to other categories.

I have however touched on.

  • LEVOIT Air Purifier for Home-LV-H133
  • Hathaspace Smart True HEPA Air Purifier
  • LEVOIT Smart WIFI Air Purifier
  • Molekule Air Purifier
  • Alen BreatheSmart 75i
  • Whirlpool WPRO200
  • DYSON TP04
  • Blueair Classic 605
  • Coway Airmega 400S

1) LEVOIT Air Purifier LV-H133

LEVOIT Air Purifier LV-H133: Best Large Room Air Purifiers

LEVOIT Air Purifier LV-H133 for home large rooms is a true HEPA filter air purifier that weighs approximately 20.4 pounds with a dimension of about 25 by 14 by 14 Inches. It is both Wi-Fi and Alexa compatible with a 3-stage filtration process. The purifier’s beautifully designed LED display can be turned off during operation. Besides, it can notify you when to put up new and fresh filters through its filter change indicator.

Simply referred to as the best housekeeper for homes and family. It is designed for large rooms with an area coverage of up to 538 ft²/ 50 m² thus making it a perfect fit for large rooms and offices. The purifier removes up to 99.97% of airborne particles such as smoke, spores, dust, and pollen. This, it does with a precision of up to 0.3 microns particles.

LEVOIT Air Purifier LV-H133 is designed to perform with a minimal noise level of 25db. That means that the air purifier gives you that restful and soothing indoor environment away from the hissing of the fun. It has a cutting-edge intelligent sensor that automatically adjusts and gives a real-time response on air quality reading at 3 fan speeds.

Additionally, the purifier has a 1-12 hours timer function that gives you the flexibility to choose exactly how long you want the purifier to operate at any given time and save energy in the process. It’s also best suited for high efficiency with its 360° filter design and cyclone technology. This technology allows the purifier to take in air from all sides and filtering up to 40% more air per hour besides purifying 40% faster than other air purifiers.

Feature Summary

  • CADR of 235 cfm
  • Coverage of 538 sq. Ft
  • Weight 20.4 pounds
  • Filtration- 3 stage with a Pre-filter, True HEPA filter, and an Active Carbon Filter
  • Size 25x15x 14 inches
  • Noise level of 25dB
  • Alexa Compatible


  • A product designed one for all rooms
  • Gives you real-time quality updates on the quality of air
  • Has a larger filter area capacity
  • Multiple function capabilities
  • One solution for countless contaminants


  • Pricey as compared to the other peers in the market

2) Hathaspace Smart True HEPA Air Purifier

Hathaspace Smart True HEPA Air Purifier

Need something sensitive enough to filter smelly gases? Then this is your purifier! Hathaspace Smart True HEPA Air Purifier has a sleek finish and aerodynamic curvature that create more efficient airflow. It is best suited for large rooms of up to 350 sq. Ft.

The purifier has a 5-in-1 stage defense that has in time been proven to filter and destroy airborne pollutants such as pet hair, allergens, dust, pollen, mold, and smoke. It also has a cellular-activated carbon filter that absorbs unpleasant odors, smoke, and gases. Its anion generator can be separately controlled to target the most stubborn odors like litter boxes, and cigarettes thus being a remarkably effective tool for fighting common allergy and asthma symptoms like runny nose and sneezing.

Hathaspace Smart True HEPA Air Purifier, 5-in-1 also features an automatic air quality sensor system that measures your air quality and adjusts the fan speed in real-time. Equally important is its display unit which continuously diagnoses your air and displays the air quality level indicators so you always know what you’re breathing.

Feature Summary

  • CADR OF 160 CFM
  • Coverage of 350 sq. Ft
  • Filtration- 5 stage filtration system, nano-catalyst filter, Cellular activated carbon filter, antibacterial filter, HEPA filter, and Ionizer
  • Weighs 12 pound
  • Smart air quality sensors


  • Smart air quality sensors
  • Award-winning customer support
  • Has a true HEPA filter
  • 5-in-1 Purification System
  • 2 air changes per hour
  • Comes with a 2-year warranty


  • It is not Alexa compatible

3) LEVOIT Smart WIFI Air Purifier

LEVOIT Smart WIFI Air Purifier: Best Large Room Air Purifiers

With LEVOIT Smart WIFI Air Purifier you take control of your air with an application whether you are home or on the go. From your smartphone Vesync app, you can control your air purifier to set a schedule, monitor the air quality, set a timer, change the mode, turn off the LED display, or even adjust speed.

Uniquely, the purifier has a honeycomb active carbon HEPA filter. This enables it to have an efficiency level of 30% higher and a 30% purifying speed which is faster than other ordinary filters. Besides, it changes air 4.5 times per hour for 360 sq. ft. room size with a noise level of 27 Db and a clean air delivery rate of 135CFM.

Additionally, the purifier comes with a 3-stage filtration, where the air is filtered through a True HEPA filter and an activated carbon filter to effectively get rid of any pollutant. It has an auto and sleep mode that enables setting such as low, medium, high fan speeds. The auto mode also enables it to automatically adjust the fan speed depending on the quality of the surrounding air.

To add on, it has voice control that is compatible with Alexa, Google Assistant, and IFTTT that enables you to power your devices through voice

Feature Summary

  • CADR of 135 cfm
  • Coverage of 360 sq. Ft
  • Weight 15.2 pounds
  • Filtration- 3 stage with a Pre-filter, True HEPA filter, and an Active Carbon Filter
  • Noise level of 27dB
  • Alexa Compatible, Google Assistant and IFTT
  • Control by remote and Vesync app


  • 3 Fan speed
  • Quiet operation
  • Timer and Schedule
  • Smart Controls
  • Air Quality Control


  • It filters quickly wears out

4) Molekule Air Purifier

Molekule Air Purifier: Best Large Room Air Purifiers

If you are looking for a reinvented air purification technology with an elegant design and gives you exceptionally clean air, then look no further. Molekule Air Purifier is the ideal answer. This purifier uses PECO technology not only to clean air but also to destroy the collected pollutants with modern scientific technology

Molekule Air has a coverage capacity of 600sq. ft making it ideal for bedrooms, living rooms, and family room. The purifier is designed to absorb air from a 360-degree angle thus pulling the pollutants from all sides and giving you back fresh air free from contamination. It has smart technology making it easier to control and giving you the desired convenience.

Additionally, it comes with 2 filters, PECO and Pre-filter with a 3-speed fan.

Feature Summary

  • Coverage of 600 sq. Ft
  • Weight: 18 pounds
  • Filter: Pre-filter and a PECO Filter
  • Noise level of 55 dB
  • IOS and Android enabled control feature


  • 2-year warranty
  • Breakthrough PECO technology
  • Wifi connectivity for easier control of the purifier


  • High maintenance cost
  • Pricey because of the technology used

5) Alen BreatheSmart 75i

Alen BreatheSmart 75i

Alen BreatheSmart 75i is an air purifier you can live with and a perfect one for large rooms and open concept spaces. We pick it for its perfect balance. The purifier is embedded with an intuitive intelligence smart laser sensor that detects and monitors air and self-adjusts to address the challenges of your ever-changing environment.

Besides, the purifier boasts about its powerful 3-stage filtration process. Apart from its true HEPA, the filter combines its mechanical filters with the ionizer to push the limit of trapping 99.97% of allergens as small as 0.3 microns. It also boasts of an antimicrobial layer that captures and inhibits the growth of bacteria and fungi,

Not to mention, it is quietly powerful with the ability to cover 1300 sq. ft every half hour, perfectly tuned to adjust noise levels to 44db for its speed 4 fan and 49db on Turbo mode. The purifier also has an intelligent sensor technology that lets you know the status of the air quality around you.

Review Summary

  • CADR of 347 cfm
  • Coverage of 1300 sq. Ft
  • Weight 27 pounds
  • Filtration- 3 stage with a True HEPA filter, Mechanical filters with ionizer, and an antimicrobial layer
  • Noise level of max 39dB and 49dB when on Turbo
  • Intelligent sensors


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


  • It’s a little bit pricey

6) Whirlpool WPPRO2000B Whispure

Whirlpool WPPRO2000B Whispure 

The air purifier is best known for its recommendation by doctors and allergists for its unparalleled efficiency. It covers a 508 sq. ft space with 4.8 air changes per hour and a CADR of 328 cfm and an ACH of 5x. Its True HEPA filter captures 99.97% of pollutants and allergens of 0.3 microns with 0 % ozone emission.

Whirlpool WPPRO2000B operates quietly with 4 fan speed adjustable levels. To add on, the purifier has a smart auto mode that reads the quality of air and automatically adjusts the fans to a quiet efficiency. Also, it has an active carbon filter that removes odors from cooking, smoking, and pets.

Whirlpool WPPRO2000B also boosts other added features such as Hepa Filter timer, 5 stages pre-filter timer, child safety lock, and cord storage. uniquely, it has an advanced electronic control, quality air monitor, built-in reliable air quality sensors, and a magnetic latch front grill for safety

Feature Summary

  • CADR of 328 cfm
  • Coverage of 50 sq. ft
  • Weight 22.44 pounds
  • Filtration-Active carbon Pre-filter and a True HEPA filter
  • Noise level of 27dB
  • The air exchange rate is 5x per hour
  • The air intake is from front
  • Control via advanced electronic control and smart touch screen


  • Great ratings for its performance
  • Quietly Whispure feature
  • Doctor recommended
  • 1-year warranty
  • Child safety lock


  • Doesn’t have an ionizer filter

7) Dyson Pure Cool, TP04

Dyson Pure Cool, TP04: Best Large Room Air Purifiers

Dyson Pure Cool, TP04 is christened as the only purifying tower capable of cleaning a whole room effectively. It can sense pollution events automatically, capture ultrafine pollutants, and project cleaner air across the whole room using air multiplier technology. The purifier has a CADR rating of 600 cfm with a room capacity of 700 sq. ft.

Dyson Pure Cool, TP04 senses pollutants in real-time and reports air quality them VOC PM2.5 and NO2. Furthermore, its sealed 360-degree HEPA and activated carbon filters effectively capture 99.97% microscopic allergens and pollutants that as small as 0.3 microns and report directly to a Dyson app on a smart device

Its air multiplier technology delivers over 77 gallons per second of powerful and smooth purified air throughout the room. The purifier does double work of purifying as well as cooling. The purifier has been awarded parent tested parent approved award as an identity of approved families trust.

Besides, it is also smart and Alexa compatible with an inbuilt voice control feature. The purifiers are asthma and allergy-friendly and have been certified purifiers by the Asthma and Allergy Foundation of America.

Feature Summary

  • CADR of 600 cfm
  • Coverage of 700 sq. Ft
  • Weight 10.98 pounds
  • Filtration-Glass HEPA filter
  • Noise level of max 42.3 dB
  • Alexa Compatible


  • Alexa compatible
  • Backward airflow mode
  • Intelligent reporting
  • Real-time pollutant sensors
  • Quick and easy filter changing


  • Little bit pricey

8) Blueair Classic 605 Air Purifier 

Blueair Classic 605 Air Purifier 

Ideal for large room space covering 775 sq. ft of space. Blueair completely filters room air effectively every 12 minutes. Its independently verified by AHAM for clean air delivery rate 450cfm and 400cfm for smoke and pollen, respectively.

Also, its settings can be controlled through a Blueair app or via Amazon Alexa’s voice. This enables the user to easily adjust the settings to address air quality easily and especially during poor air quality periods.

Like most purifiers in the market, it removes 99.97% of airborne allergens and pathogens that triggers Asthma attacks such as pollen, dust, pet dander’s smoke, bacteria, and viruses

Its housing is made from durable galvanized stands and upon purchase it comes with a 5-year warranty. Blueair has a high energy efficiency rating according to Energy Star thus lowering your energy cost.

Feature Summary

  • CADR of 400 cfm
  • Coverage of 775 sq. Ft
  • Weight 35 pounds
  • Filter- True HEPA
  • Noise level of 33dB
  • Alexa Compatible
  • The air exchange rate is 5x per hour


  • Built with the highest quality workmanship and materials
  • Powerful fan power
  • Large room space covering
  • Comes with a 5-year warranty


  • Bulky and heavy

9) IQAir Medical-Grade Air Purifier

IQAir Medical-Grade Air Purifier: Best Large Room Air Purifiers

Termed as the world leader in the purifying industry, it has the highest quality filtration process and an amazingly effective fan power giving it an ability to effectively clean 1125 sq. ft room space. Its 4-stage air cleaning process enables the purifier to undertake the process with precision.

The IQAir Medical-Grade Air Purifier has a HyperHEPA filter, cartridge-based activated carbon-filter, carbon-based chemisorption, and post-filter sleeve that work toward removing VOC and odors effectively. This, in addition to destroying harmful chemicals and capturing ultrafine particles and pollutants of up to, 0.1microns.

It is well built with high grade and quality materials and boast a 3D ultra-seal no leakage design that prevents the escape of air back into the room without being subjected to its thorough filtration process

To add on, it has a powerful cleaning 6 fan speed that can go up to 300 CFMs to quickly replace the room with clean air. This happens with just a noise level of 59dB. Its housing is double-walled and with shock absorbers to hold the fan secure thus a quieter operation. It comes with a remote control and control pad making it easier to adjust settings.

Feature Summary

  • CADR of 300 cfm
  • Coverage of 1125 sq. Ft
  • Weight -35 pounds
  • Filter- HyperHEPA filter, cartridge-based activated carbon-filter, carbon-based chemisorption, and post-filter sleeve
  • Noise level of 59 dB
  • Control via remote


  • 4 stage air filtration process
  • Minimal power consumption
  • Durable construction
  • 100% Healthy Technology


  • A little bit pricey in this category

10) Coway Airmega 400S

Coway Airmega  400S: Best Large Room Air Purifiers

The Airmega boost of autonomous smart mode features and real-time air quality monitoring to give you that surety of working throughout the clock. It can cover 1560 sq. ft of changing room air twice per hour removing 99.97 pollutants.

AIRMEGA 400S comes with two pre-filters and two max2 HEPA filter ideal for smoke and micron size pollutants with a 4-stage filtration that enables it to cover a very wide area. It has a dual side air inlet and a front AQ display indicator and an adjustable pollution sensor sensitivity for more accurate detection.

Feature Summary

  • CADR of 350 cfm
  • Coverage of 1560 sq. Ft
  • Weight – 24.7 pounds
  • Filter- Pre-filter, True HEPA, and an active carbon filter
  • Noise level of 52dB
  • Smart Controls
  • 4x air change rate per every 15 minutes


  • 5 years warranty
  • Built-in timer
  • Dual side air inlet
  • Speed setting
  • Pre-Filter
  • 2 Max Filter


  • The cost of changing filters is high


What to consider when deciding on an ideal Air Purifier for our Large Room

Everyday pollution levels are spiking up. This makes the air we breathe susceptible to pollutants and harmful pathogens and germs. Statistics for people suffering from allergic and asthmatic conditions have increased considerably making the use of the purifying devices a useful and life-saving routine and keeping these problems under check.

Therefore, selecting the right and ideal purifier for your large room is of importance. Having prior knowledge before making that purchase helps a lot. Therefore, I list a few factors to consider before making a final decision on what to go for

Room Size

All air purifiers have an optimal room size under their specification. Before making deciding on what to settle for first calculate the area in square feet of the room or space you are targeting for air cleaning. It is advisable to go for an air purifier that has an equal specification to your room or even a slightly higher specification.

The air purifiers are also bulky items thus of importance to consider beforehand the space that you are likely to place or mount it

Filter Type

HEPA is the most used filter. It can filter 99.97% of airborne particles with a size of 0.3microns such as pollen, dust pet dander, smoke, and mold. For people with allergies, they must ensure the HEPA filter is part of the present specifications.

Activated Carbon Filter removes cooking odors, while the one with Antibacterial coating works on bacteria and germs. A washable pre-filter increases the life of an air purifier. Also, check how often it takes to replace the stated filters and whether the filters are readily available

CADR Rating (Clean Air Delivery Rate)

This is a rate that tells you how efficient and quick the purifier works. It measures the cubic feet of air that the purifier can filter in one minute for a different set of pollutants. CADR goes hand in hand with the room size. Another factor to consider is Air change per Hour ACH which gives the value of times the air purifier can clean air on its acclaimed area of coverage.

Noise and Energy Rating

Before making that final decision check for that noise level rating. A high value of above 55 dB will be a disturbing noise that may interfere with your sleep pattern especially during the night Most purifiers also come with energy rating stars. Ensure that you check that for better consumption of your electricity.

Another factor to consider is convenience, cost of buying and maintenance, technology types, product dimension, warranty period, weight, included components, and energy consumption rati

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