Is It Worth It? Quick Verdict
What Are the Key Benefits?
Washable AOC Carbon Filter
Unlike most purifiers requiring periodic carbon filter replacement, the Winix 5500-2 uses a washable Advanced Odor Control carbon filter. Simply rinse it every few months and let it dry, saving $40-80 per year.
PlasmaWave Technology
PlasmaWave creates positive and negative ions that neutralize viruses, bacteria, and chemical vapors at the molecular level without producing harmful ozone. It can be turned on or off independently.
Smart Sensors and Auto Mode
Built-in sensors detect air quality and automatically adjust fan speed in real time. When pollution is detected, the unit speeds up; when air is clean, it reduces speed for quiet, efficient operation.
Remote Control Included
Comes with a compact remote for adjusting fan speed, toggling PlasmaWave, and switching modes without getting up — a convenience rarely found at this price.
Good CADR for the Price
With a dust CADR of 243 CFM, the Winix 5500-2 delivers performance comparable to the Coway Airmega at a similar or lower price, plus extra features the Coway lacks.
What Is It and How Does It Work?
The Winix 5500-2 is a popular mid-range True HEPA air purifier that stands out for its washable activated carbon filter (AOC Carbon Filter) and optional PlasmaWave technology. Designed for rooms up to 360 square feet, it offers smart sensors and auto mode at a price well below premium brands. The washable carbon filter significantly reduces long-term ownership costs.
✅ Pros
- Washable carbon filter saves money long term
- PlasmaWave adds extra filtration layer
- Smart sensors with auto mode
- Remote control included
- Good CADR value for the price
- Sleep mode is very quiet
❌ Cons
- PlasmaWave produces trace ozone (within safety limits)
- Design looks dated compared to competitors
- No WiFi or app control
- Sleep mode resets to Auto when lights come on
Where Can You Buy It?
Trusted retailers we recommend based on product quality, customer reviews, and competitive pricing.
Our Top Recommendation
AmazonBest price with Prime shipping. Check for coupon deals.
Check Price →Frequently Asked Questions
Is PlasmaWave safe to use?
PlasmaWave produces very low levels of ozone well below the FDA limit of 50 ppb and is CARB-certified ozone-free. However, some users with chemical sensitivities prefer to keep it off. The feature can be independently toggled.
How do I wash the Winix carbon filter?
Remove the AOC Carbon Filter, rinse under cold water, shake off excess, and air dry completely (about 24 hours) before reinstalling. Do not use soap, heat, or a hair dryer.
How does the Winix 5500-2 compare to the Coway Airmega?
Both offer similar CADR and coverage. The Winix has advantages in washable carbon, auto mode, PlasmaWave, and remote. The Coway wins on design aesthetics and Eco mode energy efficiency.