10 Best Air Purifier For 400 Sq Ft: Latest Models & Consumers’ Choice

CADR: 400+ m³/h Up to 1720 sq ft: Featured with Turbo-air Technology and 360° air inlet, Providing you with a new and comfortable air throughout the day in your home or office.

H13 True HEPA Filtration: This HEPA air purifier equipped with a 4-Stage Filtration system, works alongside the Pre-Filter and High-Efficiency Activated Carbon Filter to capture 99.97% of airborne particles 0.3 microns in size.

Feel The Air Change: This air cleaner with built-in PM2.5 sensitive infrared air quality sensor, a color-coded light from blue/very good to green/good to yellow/moderate to red/polluted and by automatically adjusting the fan speed in response to changes in the current air quality. Comes with an air quality indicator so you can detect air quality.

Filter Replacement Made Easy: Variety of replacement filters to meet your needs(Toxin Absorber Filter, Smoke Remover Filter, Pet Allergy Filter). We recommend replacing the air filter every 4-6 months to ensure optimal air purification. The AP401 practically serves your home while blending in with your decor. FCC certified, ETL Listed, CARB approved and 100% OZONE FREE.

OZONE FREE: Levoit air purifiers avoid using UV-C light, an air cleaning method that research has shown can produce harmful ozone and secondary pollution

HIGH PERFORMANCE: Enjoy fresh air in minutes with the Core 300 True HEPA Air Purifier. Featuring VortexAir Technology and 360° air intake, the Core 300 cleans spaces up to 547 ft² in 30 minutes, 219 ft² in 12 minutes (CADR: 141 CFM / 240 m³/h). Only products over 6 pounds can be equipped with such powerful motors that optimize the air cleaning performance

FIND RELIF: Ease sneezing, congestion, and other allergy symptoms caused by airborne contaminants. The H13 True HEPA Filter works alongside the Pre-Filter and High-Efficiency Activated Carbon Filter to capture 99.97% of airborne particles 0.3 microns in size, such as dust, smoke, pollen, odor

OFFICIAL LEVOIT FILTERS: Search for B07RSZSYNC or Core 300-RF to find Levoit's Core 300 replacement filter. Levoit filters provide the best fit and filtration, while off-brand filters are unreliable and may damage the air purifier

MULTIPLE FILTER CHOICES: Choose from a variety of replacement filters to best meet your needs. The Toxin Absorber Filter specializes in smog, toxins and VOCs. The Smoke Remover filter specializes in wildfire, smoke and etc. And the Pet Allergy Filter helps to capture pet dander and absorb unpleasant odors

MOST SILENT AIR CLEANER: Choose Sleep Mode at night and then forget all about your air purifier while you sleep. QuietKEAP Technology reduces noise levels to a near-silent 24dB, ensuring the Core 300 won’t get in the way of a good night’s rest

SLEEK DESIGN: The Core 300 practically serves your home while blending in with your decor. Its award-winning design (Red Dot, 2020) and modern white finish help your air purifier fit anywhere in your home/bedroom/room

UNDISTURBED OPERATION: Display light can be turned off to enjoy a perfect night of sleep without the effect of light. A timer for 2/4/6/8 hours and filter life time indicator for your convenience

FULL CERTIFIED FOR SAFER: Energy Star Verified, Complies with California air resources board (CARB) for indoor cleaning devices. Also FCC certified, ETL listed

Coway Mighty (AP-1512HH) is designed to accommodate room sizes up to 361 sq.ft (CADR: Dust 246 / Pollen 240 / Smoke 233 cb. ft.). Air Flow Control: 5 Stages (Auto / 1 / 2 /3 / Eco)

4 Stage Filtration System (Pre-filter, Deodorization filter, True HEPA filter, Vital Ion) captures and reduces up to 99.97% of particles 0.3 microns in the air, including pollen, pollutants and other allergens. It also reduces volatile organic compounds and reduces odor.

Coway Mighty pollution sensor communicates indoor air quality in real-time. The brightly colored LED lets you know how clean or dirty your indoor air is every minute of the day. And it features a timer, and filter lifetime indicator.

Fan speeds available in 1, 2, 3 stages by manually setting up. While auto mode automatically optimizes the speed setting 1 through 3 based on the level of indoor air quality. When no pollution is detected for 30 minutes, the fan will automatically stop and set as Eco mode to save energy.

Timer feature allows the machine to run 1/4/8 hours before automatically powering off.

Filter replacement indicator checks both Pre-filter and HEPA filter respectively to let users be aware of when to wash or replace the filter.

77 W power consumption and quiet operation with noise level ranging from 24.4 dB to 53.8 dB.

Limited manufacturer's warranty covers any internal/functional parts for 1 year and motor and electronic parts for 3 years. Filters are excluded.

Won the Best Air Purifier of 2018 at Wirecutter and ranked 1st place at the TopTenReviews.

Coway Airmega 400 room air purifier is designed to accommodate large room sizes up to 1,560 square feet and cleans the air at least two times per hour when used as recommended.

Coway Airmega Max2 filter-a combined activated carbon and a True HEPA filter-captures and reduces up to 99.99 percent of particles 0.01 microns in the air, including pollen, pollutants and other allergens. It also reduces more than 99 percent of volatile organic compounds and reduces fumes such as NH3 and CH3CHO.

Coway Airmega’s pollution sensor communicates indoor air quality testing in real-time. The brightly colored LED ring lets you know how clean or dirty your indoor air is, every minute of the day.

Coway Airmega has five fan modes: Smart, Sleep, Low, Medium and High. Noise level is nearly silent at lower speeds. Max noise at highest setting is 43.2 dB.

Coway Airmega is a smart, energy efficient air purifier with a three-setting smart mode to adapt to its surroundings. Fan speed automatically adjusts based on the room’s air quality and lighting conditions to improve air quality.

Purify your air – Our 5-in-1 filter system targets pollen, dust, pet dander, VOC’s, smoke, and odors. Our H11 HEPA filter captures 99.9% of particles down to 0.3 microns.

What you get – Smart air purifier, True HEPA filter set, remote control, manual, 2-year warranty, award-winning customer support 7 days a week, and the peace of mind that comes from a trusted American brand.

Remove odors, smoke, & VOC’s – Both an air cleaner and odor eliminator, our air purifier features a unique honeycomb activated-carbon filter that absorbs odors, smoke, and VOC’s. With a state-of-the-art fan and motor, enjoy clean air delivered quietly and efficiently in your home, bedroom, office, kitchen, basement, dorm, apartment, or living room.

Breathe easier – Nothing feels better than breathing clean air. Read our 10,000+ reviews and see just how much our air purifier can assist and support the body’s natural response during allergy season.

Smart air purifier – In AUTO mode, a smart air quality sensor detects pollutants in your air, adjusting the fan speed in real-time. A digital display on the unit reveals your air quality level, so you always know what you’re breathing.

MAXIMUM COVERAGE: Cleans up to 1,600 sq ft in one hr, 840 sq ft in 30 min, 430 sq ft in 15 min. [*Based on average CADR for pollen, smoke, and dust when operating at fan setting 3. Assumes closed room with 8 ft ceiling.] Perfect for large rooms.

HEPA H13 FILTRATION: Trusted to remove 99.9% of harmful particles including allergens, odors, VOCs, smoke, pollen, pet dander, dust, smog, contaminants, and more down to 0.1 microns in size. Captures finer particles than HEPA H11 (0.3 microns).

ULTRA QUIET: Choose from 3 fan speeds, with the lowest setting operating virtually silent. Runs at 110 Volts at a min noise level of 46dB and max of 66dB. For the most discreet operation, enable sleep mode to completely dim the unit's panel lights.

EASY TO USE FEATURES: Includes a sleek touch screen operation panel with 0-8 hour timer, fan speed, sleep mode, filter replacement indicator, and child lock, great for both kids and pets.

QUALITY TESTED & BACKED: CARB, ETL, and Energy Star certified. Backed by a USA registered Lifetime Warranty when genuine Medify replacement filters are used. The replacement filter (B07LGDYV3C) lasts 3,000 hours or about 6 months.

Air Purifiers for Home Large Room: True Hepa H13 charcoal filter captures 99.97% of dust as small as 0.3 microns; such as airborne dust, pet hair, odors, and other household dust

5 Stages of Air Cleaning: Advanced purification for the cleanest air quality; A combination filter cartridge with mesh pre-filter and Hepa H13 activated carbon filter, plus a UV light and Ion generator to freshen air even further

True Hepa Filtration: High quality air purifier with a True Hepa H13 filter that captures 99.97% of particles including ultra-fine dust, smoke, fiber and pet hair

Clean Air Ionizer: The SilverOnyx Hepa air purifier with ionizer, UV light, and activated carbon filter; The most sophisticated air purification technologies for the freshest air; A 2.5 Pm (particulate matter) sensor automatically adjusts air flow to ensure consistently high quality air

Air Purifiers for Home Large Room: True HEPA aire airpurifier allergen allergies allergy baby bathroom bedroom best carbon casa cigarette clean cleaner cleaners cleaning dander dust remover liminator fan feet filter filters filtration fresh fresheners house ionizer uv light living lv machine odor odors office para pet pets portable pure purifer purificador purifier purifyer removal replacement silver onyx silveronyx small smoke smokers sq ft square top

CLEANER AIR IN MINUTES: Cleans large rooms up to 2,145 sq ft in just 60 minutes. Perfect for homes and offices. Breathe clean, crisp air and kiss your allergies goodbye!

WORLD’S FIRST HEPA 14 FILTER: HEPA 14 Medical-Grade filter removes up to 99.99% of fine particulate matter down to 0.1 microns in size. This includes dust, pet dander, odors, and smoke. Up to 10x more powerful than a HEPA 13 grade.

BACKED BY SCIENCE: 3rd party lab tested and certified. Scientifically proven to detect and filter out 99.99% of fine particulate matter down to 0.1 microns in size. This may include pollutants, allergens, smoke, mold, pollen, dust, and odors among other find particles you don’t want to breathe in. CARB, ETL, ISO, UL and Energy Star certified. Developed by scientists and virologists at Harvard, MIT, Johns Hopkins, and Oxford University.

CLEANS AIR AUTOMATICALLY: A smart particle sensor monitors air quality for you and adjusts to increase power if polluted air is detected. Perfect for large rooms. Relax and let PuroAir filter your home’s air, improving your allergies, asthma and sleep quality. Includes a timer, fan speed, sleep mode, filter replacement indicator, and child lock, great for both kids and pets.

BREATHE EASIER: Relax and let PuroAir filter your home’s air, improving your allergies, asthma and sleep quality. Includes a timer, fan speed, sleep mode, filter replacement indicator, and child lock, great for both kids and pets.

[Coverage] Designed to clean spaces up to 1,560 sq. ft. in 30 minutes.

[HyperCaptive Filtration System] Combination of a pre-filter, deodorization filter, and True HEPA Filter reduces 99.999% of 0.01-micron particles, including pollen and other allergens; It also reduces 99% of volatile organic compounds and odor.

[Smart Mode] With its Smart Mode feature, the Airmega automatically adapts to its surroundings by adjusting fan speeds based on the room's air quality; That means your unit is energy efficient without compromising effectiveness.

[Eco Mdoe] When the air quality in the room remains purified for 30 minutes or more in Eco Mode, the fan will turn off to conserve energy, kicking on again when pollution is detected.

[Sleep Mode] When the Airmega's built-in light and pollution sensors detect that the room has been dark and the air clean for 3 minutes, Sleep Mode reduces the purifier's noise and power consumption.

[Air Quality Indicator] 24/7 pollution monitor air quality throughout the day, adjusting purification to the necessary level and saving energy when it's not needed.

[Filter Alerts] The air filter indicator tells you when the filters need to be replaced and the prefilters need to be cleaned for maximum efficiency, based on how much air they have processed.

[Timer] Schedule the unit to purify for 1, 4, or 8 hours of use and conserve energy.

[Warranty] 5-year Limited Manufacturer's Warranty

4 air changes/hr.** 780 ft² (72 m²)

4-stage hospital-type filtration - effectively cleans 200-400 square foot spaces

Detects air quality and automatically adjusts the fan speed to keep your air purified. Ultra-quiet operation.

True HEPA filter - Antimicrobial treatment safely removes 99.97% of airborne particles as small as 0.3 microns, including allergens, viruses, and cigarette smoke. Proven to capture the airborne flu virus.

Carbon filter - removes odors and captures large airborne particulates

Aera+ Mode for allergy and cold/flu seasons

Filters compatible with this model: 9287104 HEPA, 9324104 Carbon