Item 1 of 2
Item 1 of 2
expiredgmfitzg2 posted Jul 26, 2026 10:42 PM
Costco Members: 2-Pk Winix Replacement Air Filters (C545 / C535 / C909)
$60
$80
25% off
+ Free S&Hat Costco Wholesale
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+ Free S&Hat Costco WholesaleDeal 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 gmfitzg2 for sharing this deal.
Available:Features:
Thanks to Community Members gmfitzg2 for sharing 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 Wiznaz | Staff- This offer matches our previous Frontpage Deal from April 2026.
- Rated 4.7/5 stars (740+ reviews) and 4.8/5 stars (1,450+ reviews) by Costco members.
- $20 manufacturer's savings is valid through 8/2/26. While supplies last.
- 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.
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 gmfitzg2 for sharing this deal.
Available:Features:
Thanks to Community Members gmfitzg2 for sharing 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 Wiznaz | Staff- This offer matches our previous Frontpage Deal from April 2026.
- Rated 4.7/5 stars (740+ reviews) and 4.8/5 stars (1,450+ reviews) by Costco members.
- $20 manufacturer's savings is valid through 8/2/26. While supplies last.
- 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.
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Our community has rated this post as helpful. If you agree, why not thank techie333
Our community has rated this post as helpful. If you agree, why not thank siricepick
If there is a PM meter in your house you can monitor it directly, or sensor in the unit set it to auto and forget it (I only recommend these and will only buy these)
Similarly, the DIY options with 120/140mm PC fans is the cheapest and most reliable. Probably pair it with a Ikea ALPSTUGA (now $35) and a tp-link p110m ($28/4-pack) to a matter thread to trigger it yourself.
But I've got two winix C545 (one bearing starting to get annoying I'm going to try and DIY repair) and two C610 (just bought another from costco as I saw it was 99.97 and had the star of death) and only bought generics for the C545 (replaced them when the app called for it since they are like $6/each)
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Our community has rated this post as helpful. If you agree, why not thank SteakNCheese
If there is a PM meter in your house you can monitor it directly, or sensor in the unit set it to auto and forget it (I only recommend these and will only buy these)
Similarly, the DIY options with 120/140mm PC fans is the cheapest and most reliable. Probably pair it with a Ikea ALPSTUGA (now $35) and a tp-link p110m ($28/4-pack) to a matter thread to trigger it yourself.
But I've got two winix C545 (one bearing starting to get annoying I'm going to try and DIY repair) and two C610 (just bought another from costco as I saw it was 99.97 and had the star of death) and only bought generics for the C545 (replaced them when the app called for it since they are like $6/each)
If there is a PM meter in your house you can monitor it directly, or sensor in the unit set it to auto and forget it (I only recommend these and will only buy these)
Similarly, the DIY options with 120/140mm PC fans is the cheapest and most reliable. Probably pair it with a Ikea ALPSTUGA (now $35) and a tp-link p110m ($28/4-pack) to a matter thread to trigger it yourself.
But I've got two winix C545 (one bearing starting to get annoying I'm going to try and DIY repair) and two C610 (just bought another from costco as I saw it was 99.97 and had the star of death) and only bought generics for the C545 (replaced them when the app called for it since they are like $6/each)
Bought the 610 and I'm honestly not a fan of it.
Definitely did not like the way the filters were stuck together, very much prefer the 545 filter setup.
Bought the 610 and I'm honestly not a fan of it.
Definitely did not like the way the filters were stuck together, very much prefer the 545 filter setup.
Good to know!
Bought the 610 and I'm honestly not a fan of it.
Definitely did not like the way the filters were stuck together, very much prefer the 545 filter setup.
Good to know!
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Join The Conversation
Share your experience with the Slickdeals community
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