# Coway Airmega ProX (AP-3522F)

**Category**: air-purifiers | **Price**: ~$400–$500 | **Reviews referenced**: 200
**Last updated**: 2026-04-19
## One-line verdict
Powerful dual-filtration cleans massive open spaces effectively for allergy sufferers, but bulky size and high filter costs add to ownership expense versus smaller units.

## How it compares

- vs Rabbit Air A3 ($500–$750): Airmega ProX wins on CADR and coverage for very large spaces, Rabbit Air A3 wins on noise levels and slim wall-mountable design
- vs NuWave OxyPure ($500–$600): Airmega ProX wins on filtration throughput and dual-fan performance, NuWave wins on long-term filter replacement costs
- vs Shark NeverChange MAX ($300–$400): Airmega ProX wins on room coverage and filtration consistency, Shark wins on lower upfront and filter costs
- vs Blueair Blue Pure 211i Max ($250–$350): Airmega ProX wins on maximum coverage area and dual-filtration capacity, Blue Pure wins on compact size and lower total cost of ownership

## AI-summarized review themes

### Frequently Praised
- Clears smoke and allergens rapidly in large rooms
- Quiet operation even on higher speeds for size
- Reduces sneezing and improves breathing noticeably
- Auto mode adjusts reliably to air quality changes
- Effective against pet dander and odors in homes

### Frequently Criticized
- Replacement filters expensive at around $200 yearly
- Very heavy and large footprint in living areas
- No app or smart home voice control integration
- Occasional new unit fan noise issues reported
- Wheels could be larger for easier mobility

## Best for
large open-plan homes, allergy and asthma sufferers, offices with poor ventilation

## Not for
small bedrooms, budget-conscious buyers, smart home automation users

## Specifications
| Spec | Value |
|---|---|
| Room Coverage | 2,126 sq ft (2 ACH); 4,253 sq ft (1 ACH) |
| CADR | Smoke: 568 CFM; Dust: 580 CFM; Pollen: 450 CFM |
| Filtration | Dual Max2 (HEPA + Carbon), washable pre-filters |
| Noise Level | 23-53 dB across speeds |
| Filter Replacement | ~$199/year |
| Energy Use | Up to 65W; Energy Star |
| Dimensions | 18.9 x 36.6 x 24.3 in |
| Weight | 51 lbs |
| Smart Features | None (manual/auto only) |

## Data sources
- Estimated ~200 purchase reviews via Amazon, Home Depot, Sylvane, Reddit
- Review period: 2023–2026
- Sentiment confidence: high