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Costco Members: Winix C909 4-Stage Air Purifier
$160
$200
20% off
+ $5 S&Hat Costco Wholesale
+ $5 S&Hat Costco WholesaleDeal Details
Costco Wholesale has for its Members: Winix C909 4-Stage Air Purifier w/ WiFi & PlasmaWave Technology (1022-0228-00) on sale for $159.99. Shipping is $4.99.
Thanks to Community Member smyc305 for sharing this deal.
Features:
Thanks to Community Member smyc305 for sharing this deal.
Features:
- AHAM Verified up to 500 sq. ft. Room Coverage
- Energy Star & UL Certified
- Ultra-Quiet on Slowest Speed (25 db)
- Wi-Fi Enabled for Instant Monitoring and Control
- 2-Year Filter Supply: Includes 2 True HEPA replacement filters and 8 Activated Carbon Filters
Editor's Notes
Written by powerfuldoppler | Staff- This price matches our previous Frontpage Deal
- $40 manufacturer's savings is valid 9/1/26 through 9/30/26. While supplies last.
- Limit 5 per member.
- This product is rated 4.6 out of 5 stars based on 950 customer reviews.
- If you don't have a Costco Warehouse Membership, you can sign-up here
Community Notes
About the Poster
Deal Details
Community Notes
About the Poster
Costco Wholesale has for its Members: Winix C909 4-Stage Air Purifier w/ WiFi & PlasmaWave Technology (1022-0228-00) on sale for $159.99. Shipping is $4.99.
Thanks to Community Member smyc305 for sharing this deal.
Features:
Thanks to Community Member smyc305 for sharing this deal.
Features:
- AHAM Verified up to 500 sq. ft. Room Coverage
- Energy Star & UL Certified
- Ultra-Quiet on Slowest Speed (25 db)
- Wi-Fi Enabled for Instant Monitoring and Control
- 2-Year Filter Supply: Includes 2 True HEPA replacement filters and 8 Activated Carbon Filters
Editor's Notes
Written by powerfuldoppler | Staff- This price matches our previous Frontpage Deal
- $40 manufacturer's savings is valid 9/1/26 through 9/30/26. While supplies last.
- Limit 5 per member.
- This product is rated 4.6 out of 5 stars based on 950 customer reviews.
- If you don't have a Costco Warehouse Membership, you can sign-up here
Community Voting
Deal
Score
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Community Reviews
The Winix C909 is a high airflow air purifier that works well for dust, pollen, and allergy relief, with reports of fewer allergies, less rash irritation, and pre filters that quickly collect visible debris. It uses the standard A filter with a carbon sheet, and the Costco bundle includes an extra filter plus Costco backing. The PlasmaWave ionizer defaults on, so it has to be turned off manually if desired, and WiFi control needs a 2.4 gigahertz network with no spaces in the network name. A bearing issue has also been raised on other Winix models, so long term reliability may be worth watching.
Households with allergy symptoms, because it can reduce allergies and even lessen allergic rashes in moldy spaces.
Shoppers replacing an older purifier without Wi‑Fi, because this model adds app control and a second filter.
People clearing dust and pollen from a larger room, because it moves a lot more air and works well for keeping those particles down.
Buyers who want a purifier they can run continuously, because it handles full-blast 24/7 use.
People who want simple plug-and-forget operation, because the ionizer defaults on and must be turned off each time.
Buyers who need reliable Wi‑Fi setup on any home network, because it requires 2.4GHz and fails with spaces in the SSID.
People worried about long-term mechanical reliability, because Winix models can develop bearing issues.
Shoppers comparing manufacturing quality across units, because the Korea-made version was described as significantly better than the Thailand-made version.
Common Questions (5)
AI-generated summary based on comments from the community. Updated ago
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37 Comments
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Paid this exact price in 2023 from Costco. So at least Costco and Winix keeping it real for the customers.
https://www.costco.com/.product.420103
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