PureWinix 5500-2 vs Coway Airmega
The Winix 5500-2 and Coway Airmega AP-1512HH have dominated the mid-size air-purifier market for years, and the choice usually comes down to whether you want lower upfront cost and washable carbon or a quieter, more compact machine with a combined filter cartridge.
Last updated: July 2026 · By the PureAir Lab editorial team
Both units are AHAM Verifide, Energy Star certified, and designed for rooms around 360 square feet. They use a mechanical true-HEPA filter to trap 99.97% of 0.3-micron particles and an activated-carbon stage for odors and VOCs. The Winix 5500-2 typically sells for about $40 less than the Coway and includes a washable AOC carbon filter, which lowers long-term ownership costs. The Coway AP-1512HH packs its filtration into a single Max2 cartridge, hides the controls behind a cleaner front panel, and runs noticeably quieter on low. To help you decide, we compared verified CADR figures, annual filter costs, noise levels, and a few alternatives for rooms larger or smaller than the 350–400 sq ft sweet spot.
Quick comparison
CADR measures how many cubic feet of air a purifier cleans each minute for smoke, dust, and pollen. Higher CADR means faster particle removal. The table below uses AHAM or manufacturer ratings and street prices we have seen from major US retailers. Coverage numbers assume the rated air changes per hour.
| Model | Best for | Coverage | Filter | Price |
|---|---|---|---|---|
| Winix 5500-2 | Medium rooms on a budget | 360 sq ft | True-HEPA + washable AOC carbon | $159 |
| Coway Airmega AP-1512HH | Bedrooms and daily use | 361 sq ft | True-HEPA + activated carbon | $199 |
| Levoit Core 300 | Small rooms and offices | 219 sq ft | True-HEPA H13 + carbon | $89 |
| Levoit Core 400S | Smart-home medium rooms | 403 sq ft | True-HEPA H13 + carbon | $149 |
| Medify MA-40 | Large open spaces | 840 sq ft (1 ACH) / 210 sq ft (5 ACH) | True-HEPA H13 + carbon | $249 |
Coway Airmega AP-1512HH
For most bedrooms, living rooms, and home offices around 300–360 sq ft, the Coway Airmega AP-1512HH is our top pick. Its smoke CADR of 233 cfm, dust CADR of 246 cfm, and pollen CADR of 240 cfm are within a few points of the Winix, but the unit is more compact, runs quieter, and its auto mode reacts quickly to cooking smoke or dust. The Max2 filter is a single annual cartridge, so there is no separate carbon pre-filter to wash or track. Replacement filters usually cost around $50 per year if you change the cartridge once annually, which is reasonable for this performance class. It is not the cheapest option, but it offers the smoothest day-to-day experience.
- Low noise on sleep and low speeds
- Compact footprint for its coverage
- Reliable auto mode with particle sensor
- Simple one-piece annual filter replacement
- Higher purchase price than the Winix
- Carbon layer is modest; heavy odor loads may need supplemental carbon
- No app or voice control
How to choose
Start with the room you want to treat. For a given space, the smoke CADR should be at least two-thirds of the room's square footage. A 300 sq ft bedroom needs a smoke CADR of roughly 200 cfm; both the Winix 5500-2 and Coway AP-1512HH exceed that, while the Levoit Core 300 falls short and is more suited to offices or small bedrooms under 220 sq ft. If you have an open-plan living area or high ceilings, consider the Medify MA-40 or Levoit Core 400S, but remember that the Medify's 840 sq ft rating is at one air change per hour; at the five air changes per hour most reviewers recommend, it effectively covers about 210 sq ft.
Filter economics matter over a three-to-five-year ownership window. Winix's washable AOC carbon pre-filter lets you rinse away dust and odor residue every few months, so you only replace the true-HEPA element about once a year. That can save $20–$40 per year compared with replacing an all-in-one cartridge. Coway's Max2 filter is convenient and widely stocked, but you replace the whole cartridge. Levoit's filters are inexpensive for the Core 300, and the Core 400S adds smart scheduling, though some users report app quirks and lower build quality than Coway or Winix.
Noise and features are the final tie-breakers. The Coway is the quietest of the group at low speed, making it ideal for bedrooms. The Winix has a slightly more aggressive fan sound on turbo but still fine for daytime use. The Levoit Core 400S and Medify MA-40 add Wi-Fi and app control, which is useful for scheduling but not necessary for clean air. If wildfire smoke is a recurring concern, run any of these units on high when the room is unoccupied, then drop to auto or medium when you are in the space, and keep doors and windows closed.
FAQ
Which is quieter, the Winix 5500-2 or the Coway AP-1512HH?
The Coway AP-1512HH is quieter on low and sleep settings, often measuring under 25 dB on its lowest fan speed. The Winix 5500-2 is still reasonable for living rooms but produces a more noticeable airflow sound when the fan ramps up.
Do these purifiers use H13 HEPA filters?
The Levoit Core 300/400S and Medify MA-40 explicitly market H13 HEPA filtration, which captures 99.97% of 0.3-micron particles. The Winix 5500-2 and Coway AP-1512HH use true-HEPA filters that meet the same 99.97% standard, so particle-capture performance is effectively identical even if the packaging does not use the H13 label.
How often do I need to replace filters?
On the Winix 5500-2, rinse the washable AOC carbon filter every three months and replace the true-HEPA filter about once a year. The Coway AP-1512HH uses one Max2 cartridge that should be replaced roughly every 12 months under normal use. Levoit recommends changing its filter every 6–8 months, while Medify suggests 3–4 months for the MA-40 in dirty environments, so factor that into long-term costs.
Can these units handle wildfire smoke?
Yes. The true-HEPA stage removes fine smoke particles, and the activated-carbon layer reduces the associated odor. For severe smoke events, place the unit in the room where you spend the most time, run it on high when you are not in the room, and seal the space from outside air. No single mid-size purifier can clean a whole house, so you may need multiple units or a larger model like the Medify MA-40 for open floor plans.