expired
Costco Members: 2-Pk Winix Replacement Air Filters (C545 / C535 / C909)
$60
$80
25% off
+ Free S&Hat Costco Wholesale
Missed This Deal? Get alerts when similar deals are posted.
+ 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.
Community Voting
Deal
Score
+60
Good Deal
Bad Deal
Top Comments
Community Reviews
This two pack of genuine Winix replacement filters is mainly valued for keeping C545, C535, and C909 units performing like true HEPA purifiers. The brand filters are credited with better filtration and stronger allergy control than cheap replacements, and the price works out to about two years of use, or less than $3 per month. The main caveat is that cheaper third party filters can be much thinner or poor quality, and the carbon layer on the C545 is seen as short lived. A solid choice if you want OEM performance and predictable replacements.
Common Questions (5)
AI-generated summary based on comments from the community. Updated ago
Join The Conversation
Share your experience with the Slickdeals community
Share information with the community. Please follow our Community Guidelines and be kind!
30 Comments
Sign up for a Slickdeals account to remove this ad.
Our community has rated this post as helpful. If you agree, why not thank
Our community has rated this post as helpful. If you agree, why not thank
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)
Sign up for a Slickdeals account to remove this ad.
Our community has rated this post as helpful. If you agree, why not thank
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!
Sign up for a Slickdeals account to remove this ad.
Join The Conversation
Share your experience with the Slickdeals community
Share information with the community. Please follow our Community Guidelines and be kind!