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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 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 large room air purifier for your home.
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.
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 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, 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 features two adjustable night light settings for a peaceful sleep, along with a whisper-quiet 25dB decibel level on low speed.
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.
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 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.
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.
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 large room 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.
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.
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.
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.
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.
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. For something personal and portable, you may want to check out the best personal 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.
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.
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.
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.
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.
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.
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.
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 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, 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.
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.
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.
See Also: Be sure to take a look at some of the best iconic air purifiers too.
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.
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.
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.
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.
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.