Coway

Coway Airmega Jet

A from Coway, with HEPA (GreenHEPA-class claims) + carbon + pre-filter filtration, rated for rooms up to 1119 sq ft.

Who this is for:Shoppers looking for a purifier suited to large living rooms and open-plan spaces. If odors, pet smells, or smoke gases are a concern, this model includes activated carbon.

Key specs

New to these numbers? Read What is CADR? and Decibels, translated

Room coverageiThe largest room, in square feet, this purifier can effectively clean — assuming standard 8-foot ceilings and 4–5 air changes per hour.Room size guide →1119 sq ft

Noise rangeiDecibels (dB) measure loudness on a scale where every +10 dB sounds roughly twice as loud. 20 dB is a whisper, 40 dB a quiet library, 60 dB normal conversation. For bedrooms, look for under 30 dB on the lowest setting.Noise guide →20–50 dB

WarrantyiThe manufacturer's warranty period. Longer coverage signals confidence in the motor and build.3 years

Who the Coway Airmega Jet is for

Specs only matter in context. Here's where the Coway Airmega Jet genuinely fits — and the trade-offs worth knowing before you buy. If you're deciding between this model and similar options, focus on the fit cards below: they highlight the specific use cases where this purifier shines and the situations where it falls short.

Good fitBedrooms and light sleepersAt 20 dB on its lowest setting, the Coway Airmega Jet clears the 30 dB bedroom bar — roughly a whisper.
Good fitOdors, pets, and smokeAn activated carbon stage traps the gases a particle filter can't — cooking smells, litter-box odor, VOCs, and wildfire smoke gases.
Good fitSet-and-forget operationListed features include Air quality light, auto mode; no app/voice — handy for letting the purifier manage itself, though none of it replaces CADR headroom.
Keep in mindCADR is self-reportedThe Coway Airmega Jet isn't AHAM Verifide, so its CADR and coverage figures come from the manufacturer rather than an independent lab — treat them as a ceiling, not a promise.

What owners say

1 recommendation

3.0 out of 5 starsr/AirPurifiers
“Coway jet is fine. More efficient than the Mighty.”
Read the thread

Compare with similar models

These alternatives share key traits with the Coway Airmega Jet — same brand family or similar room coverage. Compare their scores, owner sentiment, and specs side by side to see which fits your specific needs better.

Common questions about the Coway Airmega Jet

Quick answers to the questions shoppers most often ask before buying. If your question isn't covered here, check the full specifications below or compare against similar models above.

What size room can the Coway Airmega Jet handle?It's rated for rooms up to 1119 sq ft.
Is the Coway Airmega Jet quiet enough for a bedroom?Yes — 20 dB on the lowest setting is under the 30 dB threshold most sleepers need, roughly a whisper. On high it reaches 50 dB, so size it to run on low or medium overnight.
Can the Coway Airmega Jet handle odors and smoke?Yes — its activated carbon stage traps odor and VOC gases while the HEPA (GreenHEPA-class claims) + carbon + pre-filter filter handles the particles, which is the combination smoke and pet households need.

Full specifications

cadr m3hiClean Air Delivery Rate expressed in cubic meters per hour — the metric used outside the US.CADR guide →: 402
dimensions: 14.8 x 7.7 x 28.2 in (376x196x717 mm)
weight lbs: 19.2
filter typeiThe particle filter grade. True HEPA captures 99.97% of particles at 0.3 microns; 'HEPA-type' has no standardized efficiency.Filter guide →: HEPA (GreenHEPA-class claims) + carbon + pre-filter
model numberiThe manufacturer's exact model identifier — handy when comparing listings across retailers.: AP-1220B
noise db maxiThe loudest fan setting, in decibels. 60 dB is normal conversation; above that you'll hear it across the room.Noise guide →: 50
noise db miniThe quietest fan setting, in decibels. 20 dB is a whisper, 40 dB a quiet library — for bedrooms, look for under 30 dB here.Noise guide →: 20
smart featuresiExtras like air quality sensors, auto mode, app control, and sleep modes. Nice to have — they don't clean the air themselves.Smart features guide →: Air quality light, auto mode; no app/voice
warranty yearsiThe manufacturer's warranty period. Longer coverage signals confidence in the motor and build.: 3
room coverage sqftiThe largest room, in square feet, this purifier can effectively clean — assuming standard 8-foot ceilings and 4–5 air changes per hour.Room size guide →: 1119
has activated carboniActivated carbon traps gases, odors, and VOCs that HEPA filters can't catch — essential for smoke, cooking smells, and pet odor.Filter guide →: True