Coway Airmega 350 Air Purifier
- Up to 2,640 sq ft in 60 minutes
- CADR: dust 376, smoke 352, pollen 450
- 3-in-1 filter: pre-filter, carbon, HEPA (99.97% at 0.3 microns)
- As low as 21.6 dB (spec lists 21.5 dB)
- 62 watts, Energy Star, CARB, ETL
- 3-year limited warranty
Last refreshed Sep 8, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A whole-floor HEPA purifier with high clean air delivery, a carbon layer for odors and a sensor-driven auto mode. It is a tall floor unit, so it suits a large open room more than a nightstand.
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ASIN: B0DRPQM7W5Model: Airmega 350Category: HEPA Air Purifiers
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Overview
Not a desktop purifier for one small room, the Coway Airmega is a tall floor unit sized for large open spaces. Air passes a washable pre-filter, an activated carbon layer and a HEPA filter, while a particle sensor sets the fan in auto mode.
High airflow across all three clean air ratings makes it a strong fit for living areas with pets, pollen or cooking smells. The carbon layer is part of the set, so odor control fades as the filter ages and needs replacing on schedule.
Who it's for
Open plan homes, allergy households and pet owners get a high airflow unit with an odor layer. People cooling one small bedroom will find it larger than needed.
Pros and cons
- High clean air ratings for size
- Carbon layer reduces odors and VOCs
- Auto mode reacts to air quality
- Light sensor dims the display at night
- Tall unit needs floor space
- Noise figure differs within the listing
- Filter replacement interval not stated
Performance notes
Room cleaning speed depends on how much air passes through the filters, which the clean air ratings measure. The particle sensor raises the fan when particles rise, and the light sensor turns the display off in the dark. Odor and gas removal depend on how fresh the carbon layer is.
Specifications
| Brand | Coway |
|---|---|
| Model | Airmega 350 |
| Dimensions & fit | |
| Particle Retention Size | 0.3 micron (99.97%) |
| Item Dimensions D x W x H | 12 x 12 x 26.3 inches |
| Item weight | 17.2 pounds |
| Capacity & performance | |
| Noise Level | As low as 21.6 dB (spec: 21.5 dB) |
| Wattage | 62 watts |
| Included components | |
| Included Components | Air purifier, filter set, user manual |
| Warranty & support | |
| Warranty Description | 3 year manufacturer's limited warranty |
| Other details | |
| Floor Area | 2,640 sq ft (60 minutes) |
| Filter Type | Pre-filter, activated carbon, HEPA |
| Control Type | Touch |
| Cadr | Dust 376, smoke 352, pollen 450 |
| Special Features | Filter life indicator, real-time air quality indicator, auto mode, timer |
| Specification Met | CARB, ETL, Energy Star |
Frequently asked questions
What comes in the box with the Coway Airmega 350?
The air purifier, a filter set and the user manual.
Does the Coway Airmega 350 remove odors?
Yes. Its activated carbon filter reduces more than 99% of volatile organic compounds and fumes such as NH3 and CH3CHO, per the listing.
Does the Coway Airmega 350 adjust its fan on its own?
Yes. In auto mode the fan speed follows the real-time air quality sensor, which detects particles as small as PM 10.
Is the Coway Airmega 350 pre-filter washable?
The listing calls it a vacuumable pre-filter.