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.

After analyzing hundreds of reviews, we’ve determined that the Levoit Core 300 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 air purifier for your home.

Top 10 Best Large Room Air Purifiers

 #1  Levoit Core 300 Large Room Air Purifier

Award: TOP PICK

WHY WE LIKE IT: This large room 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.

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

This best 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 with this large room, an air purifier is its option to use three replacement filters (labeled original for multi-purpose, pet allergy, and toxin absorber), which serve different purposes based on your situation.

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. Even its display LED lighting can be turned off for complete shut-eye. The best air purifier and humidifier also features two adjustable night light settings for a peaceful sleep, along with a whisper-quiet 25dB decibel level on low speed.

 #2  Coway Airmega 400 Large Room Air Purifier

Award: HONORABLE MENTION

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.

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

This best large room air purifier is 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 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, as well as smoke, odors, and gases. We love the fact dual suction draws in air from opposite sides for more even distribution of airflow.

Digitally, this Coway 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.

 #3  Medify Air Large Room Air Purifier

Award: BEST HOSPITAL-GRADE

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.

Pros
  • 360 degrees of distribution
  • Powerful medical grade H13 HEPA filter
  • Long filter operating life (3000+_ hours)
Cons
  • 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 or 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 really well.

On the digital side, this best air purifier really 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.

 #4  Dyson TP04 Pure Cool Tower Large Room Air Purifier

Award: BEST DESIGN

WHY WE LIKE IT: This large room air purifier comes with a unique hollow design and Air Multiplier technology to deliver 77 gallons of clean air per second to a room, an excellent choice for people who want a tower fan as well.

Pros
  • Sleek, hollow metallic design
  • Air Multiplier technology for 77 gallons of purified air per second
  • Dyson Link app for real-time air quality updates
Cons
  • Not as effective as 3+ stage air filtration systems
  • Peak noise of around 40 decibels; could be quieter

This large room air purifier is a sleek technological marvel, working with a sealed HEPA activated filter to catch close to 100% of airborne contaminants. Once caught, the large room air purifier catches and releases 77 gallons of purified air per second with up to 350 degrees of oscillation to project even airflow distribution.

Digitally, this large room air purifier continues to be impressive with Alexa and Siri compatibility for full voice controls (shut off, turn on, auto mode setting, and real-time air updates). This is the only large room air purifier on our list to offer this. Kudos for the included Dyson Link app, which provides colorful graphics on indoor and outdoor air quality (including temperature and humidity) no matter where you are. Compare this with the best smart air purifier that features a dedicated smartphone app for monitoring and scheduling, with real-time air quality updates.

 #5  IQAir Healthpro Plus Large Room Air Purifier

Award: EASIEST TO MAINTAIN

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.

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

This best 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.

On the digital side, this large air room purifier is very easy to operate. 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 from a distance. It’s also very quiet, with acceptable decibel levels for undisturbed sleep. You may also need a sleep timer that can be set at different intervals, which is found in the best personal air purifier.

 #6  Coway Airmega 200M Large Room Air Purifier

Award: BEST FOR GARAGES

WHY WE LIKE IT: This large room air purifier covers up to 361 square feet of space using a 4-stage filtration system, an excellent choice for foyers and garages.

Pros
  • Includes ionizer to boost cleaning
  • Auto Mode for automatic fan speed adjustment
  • Very quiet at the lowest setting (24.4 dB)
Cons
  • Could use more fan speeds

This large room air purifier uses 4-stage filtration to do its work, consisting of a washable pre-filter, odor filter, true HEPA filter, and an ionizer that disperses millions of negative ions into the air to cling and neutralize airborne contaminants. It comes with the choice of three fan speeds to adjust air output based on cleanliness and size.

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, LED light style. An auto mode also adjusts the fan speed automatically based on the amount of pollution and a timer allows for a 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. A filter change indicator is also featured in the best plug-in air purifier.

 #7  Blue Pure 121 Large Room Air Purifier

Award: BEST INTERFACE

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.

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

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 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.

 #8  Blueair Blue Pure 211 Large Room Air Purifier

Award: BEST ENERGY SAVING

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.

Pros
  • Covers up to up to 540 ft²
  • ENERGY STAR rated for cost savings
  • 360° air intake for even air distribution
Cons
  • 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.

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.

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

Award: BEST FOR WALL-MOUNTING

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.

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

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, and 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 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, along with 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

Award: BEST QUALITY

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.

Pros
  • Durable, steel frame
  • True HEPA filter catches 99.97% of airborne particles
  • Voice control using Amazon technology
Cons
  • 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, 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, we really 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 is even capable of night mode scheduling 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, which allows it to run very quietly without losing efficiency.

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.

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.

Best Large Room Air Purifiers Buyer’s Guide

The Most Important Features to Consider

  1. Efficiency
    In examining efficiency, our first look is to maximum square footage coverage. Typically, the larger the unit, the more square footage. 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, and smoke/odors. 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.
  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, as well as 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.
  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.

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.

Ray Prince

Diehard UFC/MMA fan and all-around techie who loves to write.

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