Best Large Room Air Purifier in 2023

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Updated March 2, 2023

To find the best large room air purifiers, you’ll need to examine a list of criteria to determine what is most important. We recommend the best large room air purifiers with a minimum 3-stage filtration system, which combines a pre-filter for large particles, a true HEPA filter for ultrafine particles, and a combination of the activated carbon layer and ionizer for smoke and odors. We are big fans of healthy digital controls that include sleep mode, auto mode (fan speed adjustment), and real-time air quality updates. These are some of the features that make up the highly-rated air purifiers.

After analyzing hundreds of reviews, we’ve determined that the Coway AP-1512HH Mighty Large Room Air Purifier is the best whole-house air purifier you can buy. Keep reading about this and our other top picks to learn more about how to select the best large room air purifier 2022 for your home.

Top 10 Large Room Air Purifiers

 #1  Coway AP-1512HH Mighty Large Room Air Purifier


WHY WE LIKE IT: This large-room air purifier comes with an indicator that alerts you when the HEPA filter and deodorization filter needs to be replaced. It can clean the air in rooms of up to 361 square feet with its 4-stage filtration system.

  • 4-stage filtration system
  • Timer function and sleep mode
  • 3-stage fan speeds and ECO mode
  • Tends to be loud at 53.8dB
  • A little on the heavy side
  • No smart features

Known for its fine performance and features, the Coway AP-1512HH Mighty air purifier comes with a 4-stage filtration system that removes 99.97% of airborne particles. The Coway Mighty’s filtration system consists of a pre-filter, deodorization filter, vital ionizer, and a Green True HEPA filter. It also features an activated carbon filter that removes odors, smoke, and VOCs. This multi-level filter combination makes it an ideal air purifier for allergy and asthma sufferers.

The Coway AP-1512HH Mighty is also incredibly energy efficient, using less than two watts of power when operating on its lowest setting. Additionally, it’s backed by a three-year warranty, making it a wise investment for anyone looking to improve their indoor air quality.

Unfortunately, it doesn’t have any smart features, so it can’t be considered a great smart air purifier. Yet, for how effectively it will clean the air in your home, it’s definitely worth checking out.

 #2  Blueair Blue Pure 211 Large Room Air Purifier


WHY WE LIKE IT: This large room air purifier uses a 3-stage filtration system and is ENERGY STAR rated for energy efficiency (30-61 watts), an excellent choice for people who want to save money on their electric bills.

  • Covers up to up to 540 ft²
  • ENERGY STAR rated for cost savings
  • 360° air intake for even air distribution
  • Rainfall sound at highest setting (56dB)
  • No Wi-Fi or Bluetooth connectivity

This large room air purifier is very well rounded, starting with a three-stage filtration system with a 360° air intake, good enough to refresh the air in rooms up to 540 ft² five times an hour at the highest fan setting. HEPASilent™ filtration technology works very efficiently in cutting down almost 100% of airborne contaminants as small as 0.1 microns in size. We love how energy efficient this model is compared to other air purifier options in the air purifier market that might make an impact on your bills over time.

On the design front, this large room air purifier is a looker, with five fabric pre-filter options to customize and blend with your home decor and combat air pollution. Maintenance is a cinch as well, simply requiring a quick vacuum or washing machine cycle on delicate All in all, this large room air purifier’s combination of coverage, 360° air intake, and five fabric pre-filter options make it one of the more fun options on the list. For smokers, we recommend the best air purifier for cigarette smoke with a minimum 3-stage filtration process.

 #3  Levoit Core 300 Large Room Air Purifier


WHY WE LIKE IT: This best large-area air purifier covers up to 219 square feet of space with three stages of filtration, an excellent choice as the main option for a bedroom or small office. You’ll want to check out our IQAir HealthPro Plus review for a medical-grade device that’s perfect for offices.

  • Vortexair technology for powerful circulation
  • Solid CADR ratings (Smoke 141/ Dust 140 / Pollen 145 CFM)
  • Acceptable noise levels (42dB lowest setting; 50dB highest setting)
  • Pre-filter needs cleaning every 2-4 weeks for best results
  • Not the smallest unit on the market

This best large room air purifier for allergies comes with three filtration layers, including a pre-filter for large particles, a true HEPA filter for ultrafine particles (e.g. airborne pollutants), and an activated carbon filter for smoke, odors, and gases. One unique feature of this fine air purifier for basements is its air purifier and its option to use three replacement filters (labeled original for multi-purpose, pet allergy, and toxin absorber). This will serve you differently based on your situation and your choice of the best large air purifier or the best air purifier for large open spaces.

With up to 219 square feet of coverage, this large room air purifier works best for smaller, confined areas for up to five air changes per hour. Big points go to QuietKEAP Technology, which helps it operate at only 24 decibels for uninterrupted sleep, helping this model compete with even the quietest air purifiers. Even its display LED lighting can be turned off for complete shut-eye. The best air purifier and humidifier also feature two adjustable night light settings for a peaceful sleep, along with a whisper-quiet 25dB decibel level at low speed. Consequently, some of the best air purifiers for a large room can be achingly loud, so check the decibels before buying.

 #4  Coway Airmega 250 Large Room Air Purifier


WHY WE LIKE IT: This large room air purifier covers up to 930 square feet of space using a 3-stage filtration system, an excellent choice for foyers and garages.

  • Auto Mode for automatic fan speed adjustment
  • Very quiet at the lowest setting (22 dB)
  • Could use more fan speeds

This large room air purifier uses 3-stage filtration to do its work, consisting of a washable pre-filter, odor filter, and true HEPA filter. It comes with the choice of three fan speeds to adjust air output based on cleanliness and size. Air purifiers with pre-filters have a higher chance of catching those dust particles and dust mites throughout their multiple internal filters in an intricate filtration system, further improving indoor air quality.

On the digital front, this large room air purifier is loaded with features, led by an air quality indicator for real-time air quality updates, and LED light style. An auto mode also adjusts the fan speed automatically based on the amount of pollution and a timer allows for quick one, four, eight, and 122-hour shifts, great for people who are constant in and out. Lastly, a filter replacement indicator lets users know when it is time to replace it. A filter change indicator is also featured in the best plug-in air purifier.

 #5  Coway Airmega 400 Large Room Air Purifier


WHY WE LIKE IT: This large room air purifier comes with a Max2 filter to kill 99.97% of airborne contaminants and works for room sizes up to 1,560 square feet, an excellent choice for an entire apartment. And, it can also work as the best air purifier for a large house.

  • Removes 99.97% of contaminants
  • Five fan modes (Smart, Sleep, Low, Medium, and High)
  • Acceptable noise levels (42dB lowest setting; 50dB highest setting)
  • No wheels for portability
  • Power cord may be too short for some people

The finest air purifiers for large rooms are well-rounded in most areas. Monstrous room coverage of up to 1,560 square feet for up to two complete air changes per hour. All is made possible using a Max2 filter, which consists of a true HEPA and activated carbon filter to eliminate fine particles as small as 0.3 microns and smoke, odors, and gases. We love the fact dual suction draws in air from opposite sides for more even distribution of airflow. That said, make sure there’s plenty of space around your best large space air purifier to ensure airflow remains continuous.

Digitally, this Coway large room air purifier comes with a slew of settings, starting with five fan modes to operate at energy efficiency, along with a 1,2,4, and 8-hour time setting. Separate LED light indicators also indicate when it’s time to replace the Max2 filter. Bonus points go to a real-time air quality sensor for instant readings. And to enjoy the best air quality, take a pick from the best ionic air purifiers. Alternatively, sticking with the best air purifier large room guarantees clean air every time.

 #6  Medify Air Large Room Air Purifier


WHY WE LIKE IT: This large room air purifier comes with powerful HEPA – H13 Filters and covers an expansive 2,400 square foot area, an excellent choice for people who want the most effective fine particle filtration possible in small clinics and hospital rooms.

  • 360 degrees of distribution
  • Powerful medical grade H13 HEPA filter
  • Long filter operating life (3000+_ hours)
  • Not the quietest unit

The key distinction between this medical-grade large room air purifier and others is its HEPA – H13 technology, which boasts a higher percentage of fine particle penetration (99.97%) than true HEPA filters, down to 0.1 microns. This formulation is more effective for asbestos, insecticides, and other ultra-fine particle contaminants. Combined with 360° air distribution and oversized air chambers, this distributes clean airflow well for the best air purifier for large spaces.

On the digital side, this best large room air purifier excels, starting with a touchscreen panel for adjusting fan speeds and programmable timers. A Sleep Mode is also included to place fan speed at its lowest setting with dimmed lights, perfect for sleep. All in all, this large room air purifier’s combination of HEPA – H13 technology, oversized air chambers, 360° air distribution, and fan speeds make it a lock. And for your vehicle, you will need a True HEPA and activated carbon filtration unit which is found in the best car air purifier.

 #7  IQAir Healthpro Plus Large Room Air Purifier


WHY WE LIKE IT: This large room air purifier uses HyperHEPA filtration technology to filter out 99.5% of airborne pollutants and splendid four-year Hyper HEPA filter life, an excellent choice for people who want to avoid maintenance at all costs.

  • Powerful 4-stage decontamination system
  • HyperHEPA filter kills particles as small as 0.003 microns
  • Covers up to 1,125 sq ft
  • Could be a quieter unit
  • Slightly odd smell when starting up the system

This best large room air purifier for smoke hits up to 1,125 sq ft of the living area by using a powerful four-stage filtration system to do its work, starting with a pre max micro-particle filtration for larger particles (e.g. pollen mold spores), an activated carbon chamber for smoke/odors, and HyperHEPA filtration for ultrafine particles like viruses. It also uses a V5-Cell filter to tackle gas and odors even further. A modular tower design makes it very easy to snap on and replace filters in seconds with little to no maintenance required. But, keep in mind not all the best air purifiers for large rooms come in this easy-to-clean, modular design. Some will be much harder to clean.

This large air room purifier is very easy to operate on the digital side. Handheld remote controls, six fan speeds, and a filter life monitor make it easy to gauge the level of air quality in real time and control it from a distance. It’s also very quiet, with acceptable decibel levels for undisturbed sleep. For something personal and portable, you may want to check out the best personal air purifier.

 #8  Blue Pure 121 Large Room Air Purifier


WHY WE LIKE IT: This large room air purifier offers 360° filtration and simple one-button controls, an excellent choice for minimalists who want the simplest interface possible.

  • Minimalist design; uses one button
  • Spacious 600 square feet coverage
  • Multiple pre-filter fabric covers for customization
  • Does not include an ionizer
  • No Auto Mode fan speed adjustment or nighttime mode

This large room air purifier covers up to 620 ft² using a multi-stage filtration system, combining a fabric pre-filter for large particles, an electrostatic filtration module, and an activated carbon layer for odors and smoke. It is good enough to filter the age five times per hour. This is a top-rated air purifier for its easy interface, but we do think the lack of automatic modes is a bit of a let-down since this air purifier becomes more hands-on than others at cleaning common allergens and pollutants. However, it still gets the job done and is a visually attractive machine.

One of our favorite features of this large room air purifier is its simplicity. It only uses a single button and multiple fabric pre-filter covers in fun colors such as pink, yellow, and blue that can be chosen to match your home decor. Noise levels are whisper quiet (32 decibels) and a built-in warning system also indicates when it is time to replace the filter. For a minimalist-focused large room air purifier, this is a solid choice. A similarly solid choice is any of the best air purifiers with washable filters.

 #9  Rabbit Air Minusa2 Ultra Quiet HEPA Large Room Air Purifier


WHY WE LIKE IT: This large room air purifier covers rooms up to 815 square feet and includes a wall mounting function, an excellent choice for people who prefer to conserve tabletop or floor space.

  • Includes app for scheduling/monitoring
  • Covers up to 815 square feet
  • Customized pet allergy filter for pets
  • Bulky (7 x 21.4 x 20.25 inches)
  • Cannot set weekend and weekday schedules in-app
  • Not the fastest in removing odors

Much like the top-rated air purifier for pets, this extra-large room air purifier works with a 4-stage filtration system (pre-filter, medium filter, HEPA filter, and carbon activated filter) that traps 99.9& of airborne particles as small as 0.3 microns. This covers mold, pollen, dust mites, pet hair, viruses, and other ultrafine particles. 350 square feet of coverage is good for four air changes an hour or two air changes per hour in a 700-square-foot room.

We love how easy it is to use this best large room air purifier for viruses. It can stand on its own or be wall-mounted. Several digital features also make it click, including Alexa compatibility for voice controls, a dedicated app for air quality monitoring, and scheduling, a Sleep Mode light sensor, and five fan speeds. A handheld remote control is even included with wireless support. And for the sake of your kids, the best air purifier for babies will work just fine.

 #10  Blueair Classic 605 Large Room Air Purifier


WHY WE LIKE IT: This large room air purifier comes with HEPASilent technology to capture close to 100% of airborne contaminants and Wi-Fi connectivity for scheduling and monitoring, an excellent choice for people who want controls from afar.

  • Durable, steel frame
  • True HEPA filter catches 99.97% of airborne particles
  • Voice control using Amazon technology
  • May be too bulky (13 x 20 x 26 inches) for smaller rooms

This is a very well-rounded machine, covering up to 775 square feet of space with true HEPA filtering, and a 500 cubic foot clean air delivery rate for five air changes per hour, keeping your room fresh. It also comes with the dedicated Blueair app, which is Alexa compatible for voice commands.

Like the Alen Breathesmart or the Molekule, we like the way this large room air purifier is laid out, with an intuitive control panel for fan speed adjustment, filter change indicator, and power functions. The Blueair app can even schedule night mode with auto shut off and noise at its lowest setting for undisturbed sleep. Compare this with the best whole-house air purifier with the WhisperMax technology, allowing it to run quietly without losing efficiency.

See Also: Be sure to take a look at some of the best iconic air purifiers too.

How We Decided

In determining the best large room air purifiers to buy, we explored efficiency, versatility, and digital controls.
The first consideration with choosing a large room air purifier for air purification is its square foot coverage. Our recommended picks have coverages of 300 square feet and up, which coincide best with the average small room, garage, or foyer size. Some of our picks run upwards of 1,500 square feet, good for entire households. Look strongly at a high clean air delivery rate and 3-stage filtration system that uses a pre-filter for larger particles, a true HEPA filter for ultrafine particles, and an activated carbon filter and ionizer combination for odors and gasses. Pre-filters alongside the main air filters are an effective method for a powerful air purifier to filter out particulate matter, especially the harmful particle matter involving carbon monoxide. Having good coverage and being able to clean pollutants, allergens, and other volatile organic compounds in large spaces is crucial for these machines. Keep in mind other aspects like noise level, since the worst air purifiers are ineffective and also have a ridiculous sound level that lacks control. If you can hear the air purifier making lots of noise output in a huge space, that’s a problem, so we put a lot of thinking into how we decided on this large room air purifier ranking list.

Versatility and digital controls are very important when deciding on the best large room air purifiers. Look for a minimum of auto mode for automatic fan speed adjustment, sleep mode for reduced noise levels (lowest setting), and real-time air quality status indicators. Some of our recommended picks even come with built-in wi-fi and dedicated smartphone apps to run schedules and monitor your indoor air quality – accessible from anywhere. Those are great features on a portable air purifier that you want to easily transport around your living space and also not have to get up and adjust the settings.

Best Large Room Air Purifiers Buyer’s Guide

The Most Important Features to Consider

  1. Efficiency
    In examining efficiency, our first look is to maximize square footage coverage. Typically, in most effective air purifiers, the larger the unit, the more square footage.
    • Filter type also plays a big part. We also include a minimum 3-stage filtration system using a pre-filter, true HEPA filter, and an activated carbon filter – all of which play a role in eliminating large particles, small particles, even microscopic particles, and smoke/odors.
    • Read our Blueair Blue Pure 211 review for a unit with a solid three-stage filtration system.
    • Why is this good? Because you’ll want to make sure you find the best air purifier for smoking weed, which is why having one that can eliminate smoke and odors is essential.
    • If you’re wondering does an air purifier remove smells, be sure the one you choose has a carbon filter.
    • Plusses include 360-degree air filtration for even air distribution, little maintenance with replaced filters, and a full set of digital controls that work to auto-optimize fan speeds based on air quality to save energy.
    • If your air purifier’s filters are washable, make sure you clean the reusable filters regularly. This will definitely save on the cost of replacement filters on certain air purifier models. If you’re new to air purifier maintenance and are wondering something like, “Can HEPA filters be washed and reused?”, double-check what kind of air filter your air purifier has and make sure it’s washable.
    • Keep in mind that not all air purifiers will come with washable filters. And, to maintain good air across larger coverage, you’ll also eventually want to replace those air filters.
    • Actually, some purifiers use thermodynamic TSS technology, like the one you’ll read about in our AirFree P3000 review.
    • A HEPA air purifier has another set of additional features to be cognizant of, but its effects on the air quality in larger spaces that can be touched to clean are worth the research.
    • Found on many excellent air purifiers, a well-designed filtration system can help a suitable air purifier do its job and perform air cleaning that fights airborne allergens and gaseous pollutants, helping reduce allergy symptoms like stuffy noses or even asthma symptoms. For added peace of mind, you can also learn how to install a germicidal air purifier in ac duct. You should also know an air purifier can work with central air, but it will depend on how strong the unit is.
    • Another effect of air purifiers for maximum coverage in large spaces is that they should help the light sleepers in your household get some more sleep.
    • With all that top of mind, some of the best picks we recommend are the Dyson Purifier, Molekule Air Purifier, Levoit Air Purifier, and the Levoit LV.
  2. Versatility
    The more versatile the large room air purifier, the more fun it is to own.
    • Look for large room air purifiers that have sleep mode for noise setting and Auto Mode and multiple fan speed settings to help conserve energy.
    • Some large room air purifiers even double as tower fans or include customized filters to match your home decor.
    • Being able to adapt to their environment is an ability that can give an air purifier an excellent level of performance while not running your energy bill up through excessive energy consumption.
  3. Digital Controls
    At best, your large room air purifier will have built-in WiFi and Alexa/Siri compatibility to schedule and monitor air quality from afar. At a minimum, the combination of Sleep Mode, Auto Mode, and multiple fan speeds will more than suffice. Don’t forget real-time air quality status indicators (usually LED lighting) and handheld remotes to control it from within range, a nice-to-have for larger rooms. Some digital indicators will also tell you when it’s time to clean the filter. Make sure you brush up your knowledge on how to clean certain types of debris, like learning how to clean tar from air purifier filters.

Large Room Air Purifiers FAQs

What is the best air purifier for large rooms?

The best air purifier for larger rooms has a minimum 3-stage filtration system that incorporates a pre-filter for large particles, a true HEPA filter for ultrafine particles, and an activated carbon filter that works to eliminate smoke, odors, and gasses. We also consider the best ones to have expansive room coverage (300 sq ft. and up), full digital controls (Sleep Mode, Alexa compatibility, multiple fan speeds), as well as ionizers for an added layer of protection.

Can an air purifier be too big for a room?

Single air filters can purify multiple rooms, as long as there are no enclosed areas that prevent the unit from circulating air to that location. Our rule of thumb is to choose an air purifier with a higher square footage rating than the area you want to cover. Consider the number of air changes per hour as well, which is calculated based on square footage.

Are air purifiers really worth it?

Yes, we feel air purifiers are definitely worth it. It can eliminate airborne particles as small as 0.3 microns that exacerbate asthma symptoms, cause allergies, and wreak general havoc on a home.

Are air purifiers a waste of money?

In the short or long term, air purifiers are most definitely not a waste of money. Air purifiers have been proven to clear 99.97% of airborne contaminants using multiple-stage filtration, which has been proven to help people sleep better, respond less to allergies, and better interact with their environment.
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