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expiredrubiks posted Apr 03, 2026 06:34 AM
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expiredrubiks posted Apr 03, 2026 06:34 AM

Costco Members: 2-Pk Winix Replacement Air Filters (C545 / C535 / C909)

+ Free Shipping

$60

$80

25% off
Costco Wholesale
46 Comments 17,342 Views
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Deal Details
Costco Wholesale has for Costco Members: 2-Pack Winix Replacement Air Purifier Filters (various) on sale listed below for $59.99. Shipping is free.

Thanks to Community Members rubiks & c0ld8 for finding this deal.

Available: Features:
  • True-HEPA Filtration
  • Captures up to 99.97% of Particles as Small as 0.3 Microns
  • Activated Carbon Filters: Reduces VOCs and Odors from Cooking, Pets, and Smoke

Editor's Notes

Written by johnny_miller | Staff
  • About this Product:
    • Rated 4.7 - 4.8 out of 5 stars.
  • About this Store:
    • If you don't have a Costco Warehouse Membership, you can sign-up here
  • Please see the original post for additional details & give the WIKI and additional forum comments a read for helpful discussion.

Original Post

Written by rubiks
Community Notes
About the Poster
Deal Details
Community Notes
About the Poster
Costco Wholesale has for Costco Members: 2-Pack Winix Replacement Air Purifier Filters (various) on sale listed below for $59.99. Shipping is free.

Thanks to Community Members rubiks & c0ld8 for finding this deal.

Available: Features:
  • True-HEPA Filtration
  • Captures up to 99.97% of Particles as Small as 0.3 Microns
  • Activated Carbon Filters: Reduces VOCs and Odors from Cooking, Pets, and Smoke

Editor's Notes

Written by johnny_miller | Staff
  • About this Product:
    • Rated 4.7 - 4.8 out of 5 stars.
  • About this Store:
    • If you don't have a Costco Warehouse Membership, you can sign-up here
  • Please see the original post for additional details & give the WIKI and additional forum comments a read for helpful discussion.

Original Post

Written by rubiks

Community Voting

Deal Score
+48
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Top Comments

DarnCrazy
2370 Posts
875 Reputation
LifeSupplyUSA on eBay has been pretty solid when it comes to aftermarket filters. I've tried a few others but they were mostly no-name brands and they're no longer being sold. I also buy official Winix filters when they're on sale for cheaper than usual with credit card point deals. Ironically, I found the LifeSupplyUSA filters to actually be thicker and slighter better made and the official OEM filters.
configer
734 Posts
62 Reputation
is it really better than generic brands also claiming HEPA?
enigmatticus
20 Posts
10 Reputation
That means the bearings in the fan motor are going bad

46 Comments

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Apr 04, 2026 04:39 AM
116 Posts
Joined Sep 2019
ColdWeatherSuxApr 04, 2026 04:39 AM
116 Posts
I'm honestly a bit surprised these are lasting long enough for anyone to need replacement filters. All 5 of my c545s started making death squeals within a year and went back to Costco…
Apr 04, 2026 04:51 AM
61 Posts
Joined Jan 2012
soa102Apr 04, 2026 04:51 AM
61 Posts
I don't get it. Isn't it $27 for 1 on Amazon? https://www.amazon.com/dp/B002QUZJAS
Last edited by Mbilo April 3, 2026 at 09:52 PM.
2
Apr 04, 2026 05:02 AM
93 Posts
Joined Jan 2015
ejordan525Apr 04, 2026 05:02 AM
93 Posts
Quote from ColdWeatherSux :
I'm honestly a bit surprised these are lasting long enough for anyone to need replacement filters. All 5 of my c545s started making death squeals within a year and went back to Costco…
Mine just had the WiFi chip stop working. No more app connectivity!
Apr 04, 2026 05:09 AM
104 Posts
Joined Nov 2017
gonediving77Apr 04, 2026 05:09 AM
104 Posts

Our community has rated this post as helpful. If you agree, why not thank gonediving77

Amazon has the Winix brand filters for less
1
Apr 04, 2026 05:23 AM
975 Posts
Joined Apr 2015
orioncygnusApr 04, 2026 05:23 AM
975 Posts
Quote from enigmatticus :
That means the bearings in the fan motor are going bad
Mine have been like this since about a year after purchasing. I've still been using it all these years. Is there any functional issue? I can live with the sound
Apr 04, 2026 06:34 AM
673 Posts
Joined Aug 2005
str8flexedApr 04, 2026 06:34 AM
673 Posts
Quote from DarnCrazy :
LifeSupplyUSA on eBay has been pretty solid when it comes to aftermarket filters. I've tried a few others but they were mostly no-name brands and they're no longer being sold. I also buy official Winix filters when they're on sale for cheaper than usual with credit card point deals. Ironically, I found the LifeSupplyUSA filters to actually be thicker and slighter better made and the official OEM filters.
Thanks. Just ordered 2 for $20 shipped. Worth a try
1
Apr 04, 2026 11:16 AM
114 Posts
Joined Nov 2018
LaurenL8559Apr 04, 2026 11:16 AM
114 Posts
Quote from bigmik1021 :
You get two filters for 60
Not true, just bought one this week directly from winix and it only had 1 filter
2

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Apr 04, 2026 11:47 AM
223 Posts
Joined Mar 2009
matchbox825Apr 04, 2026 11:47 AM
223 Posts
Quote from ganievich278 :
Any chance you can share your personal opinion on which ones you thought were good and which are not?
We like the Pulluty filters on Amazon. $28 for 2 HEPA + 8 Carbon filters right now. Even cheaper if you have a full Subscribe and Save shipment.
https://a.co/d/0eBA8oqq
1
Apr 04, 2026 11:58 AM
1,592 Posts
Joined Oct 2014
Deal-R-DashApr 04, 2026 11:58 AM
1,592 Posts
Quote from DarnCrazy :
It really depends on the generic ones you get. I've had some good success with some filters but also have had some there were clearly inferior with thinner material. So if you find a decent generic, you can definitely get similar OEM like filters.
Totally agree with this statement. Unfortunately the generic brands come and go so often and the names are so weird that it is difficult to find any consistency for those that have the same lifespan as the OEM filters. This is a great deal for a filter that will typically last a year. Sometimes if you are lucky you can find a generic that is $15 or so that will last 6 months. That is about the maximum I have seen in my experimenting over the past few years. Alas I am no longer a Winix fan due to their planned obsolescence with the bearings in the fan motor. I've had several units over the years and they all started the bearing whine after the warranty expired. Thank goodness for Costco return policy and credit card warranties!
Last edited by Deal-R-Dash April 4, 2026 at 05:01 AM.
Apr 04, 2026 12:11 PM
1,540 Posts
Joined Aug 2009
coolmannApr 04, 2026 12:11 PM
1,540 Posts
Quote from enigmatticus :
That means the bearings in the fan motor are going bad
Not necessarily bad, but loose. You can find videos on YouTube on how to open the back of the unit to tighten that bolt. It's fairly simple. I did it and... the high pitch noise is gone. A drop of superglue to keep it tightened goes a long way.
Apr 04, 2026 01:18 PM
179 Posts
Joined Sep 2016
KikiD27Apr 04, 2026 01:18 PM
179 Posts
Quote from enigmatticus :
That means the bearings in the fan motor are going bad
Yeah, that's the problem with Winix Air Cleaners after you use them for a while, particularly the "white" ones like the C545. Drives me crazy.
Apr 04, 2026 01:38 PM
142 Posts
Joined Feb 2012
manfreApr 04, 2026 01:38 PM
142 Posts
Quote from LaurenL8559 :
Not true, just bought one this week directly from winix and it only had 1 filter
You bought from a different site that sells quantity 1 and use that as proof that Costco's quantity 2 listing is wrong?
Apr 04, 2026 01:47 PM
20 Posts
Joined Jan 2018
enigmatticusApr 04, 2026 01:47 PM
20 Posts
Quote from orioncygnus :
Mine have been like this since about a year after purchasing. I've still been using it all these years. Is there any functional issue? I can live with the sound
If you can tolerate it you can probably keep using it like that for a long time, but at some point those bearings are either going to slowly keep getting louder until they lock up the fan motors ability to rotate, or they will just break completely and it will be the loudest fan you've ever heard. If you are technically inclined or know someone that is, you can replace the bearings with relative ease. Bearings are usually only a few dollars a piece depending on the brand and quality of bearing. I have the old 5500-2 model and I had to change the bearings in mine after like 3 years. I think it took 608 style bearings.
Pro
Apr 04, 2026 02:29 PM
415 Posts
Joined Sep 2011
donny1234
Pro
Apr 04, 2026 02:29 PM
415 Posts
Quote from soa102 :
I don't get it. Isn't it $27 for 1 on Amazon? https://www.amazon.com/dp/B002QUZJAS
yeh, this seems like better deal

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Apr 04, 2026 02:30 PM
11 Posts
Joined Jan 2010
jonsompelApr 04, 2026 02:30 PM
11 Posts
Quote from enigmatticus :
That means the bearings in the fan motor are going bad
I have 3 and one had bearings make the whine noise. Watched a YouTube video of how to replace it. It's a bit involved with disassembling the motor (need soldiering iron for 3 large contact points) and then pulling off the old bearings (hack is to use two box wrenches to get then off).

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