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popularc0ld8 posted Yesterday 05:38 PM
popularc0ld8 posted Yesterday 05:38 PM

Costco Members: Winix C909 4-Stage Air Purifier $159.99 + $4.99 S&H $164.98

$165

Costco Wholesale
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https://www.costco.com/p/-/winix-...?langId=-1

Popular deal ($40 OFF) for the Winix C909 deal is back in Costco.

Product Features:

- AHAM Verifide® at 500 sq ft.: Also cleans rooms up to 2,420 sq ft in 1 hour (1,210 sq ft in 30 minutes, 807 sq ft in 20 minutes, 605 sq ft in 15 minutes)
- The Smarter Air Purifier: Control and monitor your unit anytime from anywhere by instantly accessing your unit with the Winix Smart App through the convenient WiFi feature
- Washable Fine Mesh Pre-Filter: The first line of defense against the largest airborne particles found indoors
- Activated Carbon Filter: Reduces VOCs and household odors from cooking, pets, and smoke. It is designed to catch airborne particles found indoors, which also helps prolong the True HEPA Filter life
- True HEPA Filter: Winix True HEPA captures 99.99%* of airborne allergens including pollen, dust, smoke, pet dander, and other ultrafine particles as small as 0.003 microns

Also 2-Pack Replacement filters for the C909 are discounted $20 OFF for $59.99 - https://www.costco.com/p/-/winix-...?langId=-1
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Community Notes
About the Poster
https://www.costco.com/p/-/winix-...?langId=-1

Popular deal ($40 OFF) for the Winix C909 deal is back in Costco.

Product Features:

- AHAM Verifide® at 500 sq ft.: Also cleans rooms up to 2,420 sq ft in 1 hour (1,210 sq ft in 30 minutes, 807 sq ft in 20 minutes, 605 sq ft in 15 minutes)
- The Smarter Air Purifier: Control and monitor your unit anytime from anywhere by instantly accessing your unit with the Winix Smart App through the convenient WiFi feature
- Washable Fine Mesh Pre-Filter: The first line of defense against the largest airborne particles found indoors
- Activated Carbon Filter: Reduces VOCs and household odors from cooking, pets, and smoke. It is designed to catch airborne particles found indoors, which also helps prolong the True HEPA Filter life
- True HEPA Filter: Winix True HEPA captures 99.99%* of airborne allergens including pollen, dust, smoke, pet dander, and other ultrafine particles as small as 0.003 microns

Also 2-Pack Replacement filters for the C909 are discounted $20 OFF for $59.99 - https://www.costco.com/p/-/winix-...?langId=-1

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Yesterday 09:58 PM
23 Posts
Joined Jun 2018
ShrewdOstrich230Yesterday 09:58 PM
23 Posts
Good deal, but the previous price for same model at Costco for $200 included two filters. Not sure if this one does.
Yesterday 10:05 PM
221 Posts
Joined Dec 2008
vicsta48Yesterday 10:05 PM
221 Posts
serious question - Why does this have Wifi? what is the benefit?
1
Yesterday 10:07 PM
792 Posts
Joined Feb 2024
GhostGrayBoltYesterday 10:07 PM
792 Posts
Quote from vicsta48 :
serious question - Why does this have Wifi? what is the benefit?
wow.....just.....wow...
1
Yesterday 10:28 PM
12 Posts
Joined Nov 2018
LobstercrossingYesterday 10:28 PM
12 Posts
Quote from ShrewdOstrich230 :
Good deal, but the previous price for same model at Costco for $200 included two filters. Not sure if this one does.
Looking at the recent reviews, someone mentioned that it included 1-year of filters, so I'm assuming that means 2 extra filters.
Yesterday 11:28 PM
40 Posts
Joined Nov 2011
RonzerwaYesterday 11:28 PM
40 Posts
Quote from vicsta48 :
serious question - Why does this have Wifi? what is the benefit?
I see its main benefit is for Data monitoring. Even when the fan is off, the device is tracking how air quality changes and that can give you insight of the reasons that cause your house's air quality to worsen. For some, it might be useful to turn it on an hour before they get home. Also, it enables you to use a voice assistant to turn it off and on.
It is definitely an unnecessary feature, as it doesn't help achieve its core function. But It is probably a marketing feature and also a way for the company to improve monetization. An app will probably push filter subscriptions. I am going to research privacy concerns with this product because of all this data being created. I have a suspicion that they could be selling data to the data brokers.
1
Today 02:52 AM
49 Posts
Joined Aug 2008
azzmaticToday 02:52 AM
49 Posts
I've had this unit for 18 months in the front room. Used the app with the wifi to program it to come on turbo speed from 2am to 4am then go down one speed from 4 to 6 then go down to quieter speed for the rest of the day. We have two cats an its amazing how much hair is in the prefilter I clean every few weeks.
Today 03:01 AM
4,718 Posts
Joined Feb 2006
Processing...Today 03:01 AM
4,718 Posts
Quote from Ronzerwa :
I see its main benefit is for Data monitoring. Even when the fan is off, the device is tracking how air quality changes and that can give you insight of the reasons that cause your house's air quality to worsen. For some, it might be useful to turn it on an hour before they get home. Also, it enables you to use a voice assistant to turn it off and on.
It is definitely an unnecessary feature, as it doesn't help achieve its core function. But It is probably a marketing feature and also a way for the company to improve monetization. An app will probably push filter subscriptions. I am going to research privacy concerns with this product because of all this data being created. I have a suspicion that they could be selling data to the data brokers.
Remember that you can always use them without activating the WiFi feature

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Today 04:05 AM
1,440 Posts
Joined Feb 2017
mixpieToday 04:05 AM
1,440 Posts
Today 04:45 AM
6,482 Posts
Joined Dec 2004
CaleoToday 04:45 AM
6,482 Posts
I wonder if this unit uses the same filters that I already have my old Winix 5300-2. Looks like it might. I've had it for a bit over 5 years & I'm a little bummed because lately its fan has been getting louder - sounds like the bearings are going. Been thinking about getting a new one.

...but now that I've done a quick search, there are several vids bearing replacements and it uses standard 608ZZ bearings which I just happen to already have around. Suppose I'll give that a shot before dropping $165.
Edit: Easier said than done, looks like it'll require some desoldering to get to one of the bearings. I can probably manage but not a quick/easy fix.
Last edited by Caleo April 1, 2026 at 09:57 PM.

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