9800 4-Stage True Hepa Air Purifier
Large Room Performance Meets Smart Control with PlasmaWave Technology
Full manufacturer title
Winix 9800 4-Stage True Hepa Air Purifier with WiFi and PlasmaWave, 500 Sq Ft,Black,Large
$240
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Ravvy verdict
89.2 / 100
The Winix 9800 is a top-tier choice for those who want a 'set it and forget it' air purifier for large rooms, trading a larger footprint for exceptional smart features and air scrubbing power.
- Best for
- Homeowners with large open-plan living areas or pet owners seeking automated odor control
- Buy it if
- You want high CADR rating verified for rooms up to 500 square feet.
- Skip it if
- You prefer strictly mechanical filtration.
- Best alternative
- DREO Air Purifier for Home, Up to 1176 ft², HEPA Sleep Mode, Air Purifiers for Large Room & Bedroom, Pets, Smoke, Dust, Pollen & Odors, PM2.5 Monitor, Auto & Turbo Mode, 4 Speeds, DR-HAP009 (Dreo 539) (Light sleepers and pet owners in apartments or medium-sized bedrooms.)
How it scores on what matters
- Air Purification Power94.0
- Smart Features91.0
- Quietness89.5
- Value for Money86.0
- Ease of Maintenance82.0
Ravvy factor scores, 0 to 100, derived from specs, owner reviews and category norms.
What it is
The Winix 9800 is a powerhouse designed for significant airflow, capable of cycling the air in a 500 square foot space over four times per hour. Its four stage filtration system combines a washable pre-filter and carbon layer with a True HEPA filter to capture microscopic irritants. The inclusion of PlasmaWave technology offers a secondary layer of protection by using a safe electrical discharge to break down odors and chemical vapors at the molecular level. What sets this model apart is its blend of automation and remote connectivity. Users can manage air quality through the Winix Smart app or rely on the dual smart sensors that automatically ramp up fan speeds when pollutants are detected. The unit transitions seamlessly into a dim, whisper-quiet sleep mode when lights go down, making it an excellent choice for bedrooms or living areas where noise levels are a primary concern.
Ravvy AI insight
While many purifiers claim high coverage, the Winix 9800 is AHAM verified for 500 square feet, ensuring its CADR ratings are backed by independent testing. Potential buyers should note that while the pre-filter is washable, the True HEPA and carbon filters require annual replacement to maintain the 0.003 micron filtration efficiency. Using the Auto Mode is highly recommended as it optimizes energy use by only running at high speeds when the dual sensors detect a drop in air quality.
Generated from owner feedback, product specs, pricing, and retailer data. Last updated Aug 20, 2026.
What owners praise
- High CADR rating verified for rooms up to 500 square feet
- PlasmaWave technology targets VOCs and odors effectively
- Smart app and voice control integration via WiFi
- Washable pre-filter extends the life of expensive HEPA filters
- Ultra-quiet 26.2 decibel operation on lowest setting
- Visual LED air quality indicator provides instant feedback
What to know first
- Large physical dimensions may be bulky for small rooms
- Higher power consumption at 95 watts compared to smaller units
- Replacement filters can be a significant recurring cost
Specifications
- Brand
- Winix
- Color
- Black
- Wattage
- 95 watts
- Brand Name
- Winix
- Floor Area
- 500 square_feet
- Unit Count
- 1 Count
- Filter Type
- HEPA
- Item Weight
- 19 pounds
- Noise Level
- 26.2 db
- Part Number
- 1022-0228-02
- Filter Class
- HEPA
- Manufacturer
- Winix
- Model Number
- 9800
- Power Source
- ac
- Control Method
- Touch
- Item Type Name
- Air Purifier
- Number of Packs
- 1
- Special Features
- WiFi, 500 square feet, true HEPA
- Specification Met
- AHAM Certified, CARB Certified, UL Certified
- Product Dimensions
- 11.8"D x 16.5"W x 23.2"H
- Included Components
- True Hepa and Carbon Filters (1 Year)
- Warranty Description
- 2 Year
- Particle Retention Size
- 0.3 micron
- Item Dimensions D x W x H
- 11.8"D x 16.5"W x 23.2"H
- Contaminant Filtration Capability
- High
How to get the most out of it
Optimizing Auto Mode
Place the unit at least 12 inches away from walls and furniture. This allows the dual smart sensors to accurately sample the room air and adjust fan speeds effectively.
Ownership tips
care
Clean the Pre-Filter Regularly
To maintain maximum airflow and protect the HEPA filter, vacuum or wash the fine mesh pre-filter every 14 days. Ensure it is completely dry before reinserting it into the machine.
tip
Using PlasmaWave Strategically
PlasmaWave is excellent for neutralizing strong cooking smells or pet odors. You can toggle this feature off via the app if you prefer standard HEPA filtration during sleep.
Frequently asked questions
How often should I replace the filters?
The True HEPA and Activated Carbon filters should generally be replaced once every 12 months. The unit features a filter replacement indicator that will notify you based on actual usage and air quality conditions.
Is the PlasmaWave technology safe?
Yes, Winix PlasmaWave technology is CARB certified and meets strict ozone emission limits. It creates Hydroxyls to neutralize pollutants without producing harmful levels of ozone.
Can I control the unit without a smartphone?
Yes, the Winix 9800 features physical touch controls on the top panel for all major functions. However, the WiFi app provides additional scheduling features and detailed air quality history.
What is the maximum room size this can handle?
While AHAM verified for 500 square feet for high-frequency cleaning, it can circulate air in rooms as large as 2,420 square feet once per hour. It is best suited for large living rooms or open basement spaces.
Does it work with Alexa or Google Home?
Yes, this model is compatible with major voice assistants. Once connected to the Winix Smart app, you can use voice commands to turn the power on or off and change fan speeds.
Where can you buy the 9800 4-Stage True Hepa Air Purifier?
9800 4-Stage True Hepa Air Purifier is sold through Amazon, and Winix also lists it through its own site and major retail partners. The buy link on this page goes straight to the current Amazon listing, which is where stock and pricing update most often.
How much does the 9800 4-Stage True Hepa Air Purifier cost?
The last price Ravvy recorded was $240. Retail pricing on air quality moves with promotions and stock, so treat that figure as a reference point and check the live listing before you buy.
How do you get the 9800 4-Stage True Hepa Air Purifier for a cheaper price?
Three tactics work best: watch for holiday and seasonal sale events when air quality discounts run deepest, compare the open box or renewed listing against new stock, and check whether Winix is running a coupon or bundle. Adding the product to your Ravvy wishlist keeps it handy so you can revisit the listing when prices drop.
Is the 9800 4-Stage True Hepa Air Purifier in stock right now?
It was in stock at our last check. Availability on popular air quality can change within hours, so the live listing is the source of truth.
Is the 9800 4-Stage True Hepa Air Purifier worth it?
Ravvy scores it 89.2 out of 100. The strongest argument for it is high CADR rating verified for rooms up to 500 square feet. The trade off to weigh is large physical dimensions may be bulky for small rooms.
Who should buy the 9800 4-Stage True Hepa Air Purifier?
It fits homeowners with large open-plan living areas or pet owners seeking automated odor control If that does not describe your situation, compare it with the other options in Air Quality before committing.
What are the key specs of the 9800 4-Stage True Hepa Air Purifier?
ASIN: B09KNX3J36. Brand: Winix. Color: Black. Wattage: 95 watts.
What are good alternatives to the 9800 4-Stage True Hepa Air Purifier?
Compare it against the other scored picks in Air Quality on Ravvy. We rank every option in that group by the same criteria, so you can see which model wins on value, quality, and owner sentiment before you decide.
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