Coway
Coway Airmega AP-1512HH Mighty
Ranked #2 of 4 in Best Air Purifier
Best value
From $150Approximate — prices change and we do not track them in real time
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Key specifications
- CADR
- 233 CFM
- Rated coverage
- 361 sq ft
- Filtration
- 4-stage: washable pre-filter, carbon, H13 True HEPA, toggleable ionizer
- Pre-filter
- Permanent and washable — not a recurring cost
- Efficiency
- ENERGY STAR certified
Our verdict
The one to buy if you want the running cost as low as it goes. Its permanent washable pre-filter takes an entire consumable off the bill — Consumer Reports notes that carbon pre-filters alone can cost up to $50 every three months on other machines — and it is the cheapest unit here to begin with. The trade is coverage and smart features: at 233 CADR it is a bedroom machine, not a living-room-and-kitchen machine.
How it scores
Each criterion is scored 0-100 from published specs and lab-tested figures in the sources below, then weighted by the fixed formula this category uses. The weights are the same for every product here.
Clean Air Delivery35% of score
78
Running Cost25% of score
90
Noise Level15% of score
85
Price Value25% of score
94
Strengths and limitations
Pros
- The washable permanent pre-filter removes a consumable that costs up to $50 a time on rival machines
- The cheapest machine here and the longest-proven — it has been on sale for over a decade
- The ionizer can be switched off, which matters because ozone-producing modes are not recommended
Cons
- 233 CADR limits it to around 361 sq ft — undersized for open-plan living
- No Wi-Fi or app control at this price
- Design is dated next to newer rivals
Where this product appears
Also worth a look
Sources: Consumer Reports air purifier buying guide (2026-06-04) · The Home Picker in-home comparison (2026-06-12)Last checked by Picksights 2026-07-29