The Four Best Air Purifiers

Dyson Purifier Cool TP09

• ✓Removes 99.97% of particles as small as 0.1 microns — includes viruses
• ✓Doubles as a fan and formaldehyde destroyer (continuous PECO filter)
• ✓MyDyson app shows real-time air quality data per pollutant type

• ✗One of the priciest air purifiers on the market
• ✗Filter replacement costs $50–$80/year

Coway Airmega 400S

• ✓Massive coverage area — genuinely works in open-concept living rooms
• ✓Smart mode automatically adjusts speed based on live air quality sensor
• ✓Energy Star certified — 40% more efficient than comparable units

• ✗Replacement filters are proprietary and cost $60+
• ✗Design is functional but bulky at 24.7 inches tall

Winix 5500-2

• ✓True HEPA at under $200 — beats most competitors on value
• ✓PlasmaWave plasma ion technology neutralizes VOCs without ozone
• ✓Washable pre-filter extends HEPA lifespan significantly

• ✗PlasmaWave ionizer produces trace ozone — turn off if sensitive
• ✗Coverage tops out at 360 sq ft, which limits bedroom use only

Blueair Blue Pure 311i Max

• ✓HEPASilent Ultra technology removes 99.97% of particles at whisper-quiet 24 dB
• ✓App-controlled with auto mode, scheduling, and air quality history
• ✓Compact, attractive design blends into bedroom decor

• ✗Filter replacement is every 6 months in high-pollution areas
• ✗No carbon pre-filter in base unit — odor control is average