We may earn a commission from links on this site.

Illustration. Photo coming soon

Air purifiers ยท Coway

Coway Airmega 350 air purifier

Rated for rooms up to 558 sq ft. Puts out 360 cfm of smoke-free air per minute.

Where it ranks

#7 in Best air purifiers for allergies206 models compared#3 in Best air purifiers for allergies with an air quality sensor72 models compared#10 in Best low-energy air purifiers for rooms over 500 sq ft with an air quality sensor21 models compared

Full specs

Cleaning power

Room size it is rated forThe largest room it cleans well in the certification test.558 sq ft
Clean air per minute: smokeHow much smoke-free air it puts out each minute. Higher cleans faster.360 cfm
Clean air per minute: dustThe same test for dust.378 cfm
Clean air per minute: pollenThe same test for pollen. Matters most for allergies.450 cfm

Running cost

Electricity per yearMeasured use when running all year. Multiply by your power price.344 kWh
Among the most efficient of 2025No

Filters

Main filterHEPA-Type

Safety

Ozone it gives offOzone irritates lungs. 0 means none was measured.0 ppb

Features

Automatic modeAn air quality sensor adjusts the speed on its own.Air Quality Sensor
App controlNo

Source: this model on the ENERGY STAR list, checked 2026-11-09. Model number Airmega 350.