Slickdeals is community-supported.  We may get paid by brands for deals, including promoted items.
frontpagemkdenar posted Jul 29, 2026 5:30 AM

Costco Members: WINIX C610 4-Stage True HEPA Air Purifier w/ Additional Filter

$100

$130

23% off
(Select Stores, In-Store Only)at Costco Wholesale
17.4K Views
Get Deal at Retailer
Deal Details
Select Costco Wholesale Locations (link for reference only) have for Members: WINIX C610 4-Stage True HEPA Air Purifier w/ Additional Filter on sale for $99.97.
  • Note: Offer is valid In-Store only for Costco Members and availability varies by location. You may check Costco Warehouse In-Store price by using the Costco Mobile App, going to "Warehouse" > "Search warehouse inventory > Enter Item Number 3449587.
Thanks to community member mkdenar for finding this deal.

Features:
  • Up to 2 years of filtration: two all-in-one filters included
  • AHAM verified 380 sq. Ft.: cleans rooms up to 1840 sq. Ft. In 1 hour
  • Winix true HEPA: captures up to 99.99% of airborne allergens including pollen, smoke, and pet dander
  • Auto mode: built-in air quality sensor measures and adjusts fan speed in real-time
  • Air quality indicator: visual indicator displays real-time air quality in the room

Editor's Notes

Written by megakimcheelove | Staff
  • Our research indicates that this offer is $110.02 lower (52% savings) than the next best available price from a reputable merchant with prices starting from $209.99.
  • Rated 4.4/5 (793 reviews)
  • If you don’t have a Costco Warehouse Membership, you can sign up here.

Original Post

Written by mkdenar
Community Notes
About the Poster
Deal Details
Community Notes
About the Poster
Select Costco Wholesale Locations (link for reference only) have for Members: WINIX C610 4-Stage True HEPA Air Purifier w/ Additional Filter on sale for $99.97.
  • Note: Offer is valid In-Store only for Costco Members and availability varies by location. You may check Costco Warehouse In-Store price by using the Costco Mobile App, going to "Warehouse" > "Search warehouse inventory > Enter Item Number 3449587.
Thanks to community member mkdenar for finding this deal.

Features:
  • Up to 2 years of filtration: two all-in-one filters included
  • AHAM verified 380 sq. Ft.: cleans rooms up to 1840 sq. Ft. In 1 hour
  • Winix true HEPA: captures up to 99.99% of airborne allergens including pollen, smoke, and pet dander
  • Auto mode: built-in air quality sensor measures and adjusts fan speed in real-time
  • Air quality indicator: visual indicator displays real-time air quality in the room

Editor's Notes

Written by megakimcheelove | Staff
  • Our research indicates that this offer is $110.02 lower (52% savings) than the next best available price from a reputable merchant with prices starting from $209.99.
  • Rated 4.4/5 (793 reviews)
  • If you don’t have a Costco Warehouse Membership, you can sign up here.

Original Post

Written by mkdenar

Community Voting

Deal Score
+56
Good Deal

Top Comments

Join The Conversation

Share your experience with the Slickdeals community

Share information with the community. Please follow our Community Guidelines and be kind!

35 Comments

Sign up for a Slickdeals account to remove this ad.

Jul 29, 2026 11:41 AM
81 Comments
Joined Apr 2014
jumponitJul 29, 2026 11:41 AM
81 Comments
I don't need one but you get an upvote for the fart test. Respect.
9
2
Jul 29, 2026 11:50 AM
746 Comments
Joined Jan 2009
Boost_addictJul 29, 2026 11:50 AM
746 Comments
Winix units really work great I have 2 larger units (refurb C545) and one large costco C909. With all of the smoke/bad air quality this summer these really make the air in our house more manageable than the outside air. Not sure how these much smaller units do as far as CFM and noise. The large units are quiet and move a lot of cfm.
Jul 29, 2026 11:53 AM
249 Comments
Joined Jun 2019
dealsgameJul 29, 2026 11:53 AM
249 Comments
Quote from jumponit :
I don't need one but you get an upvote for the fart test. Respect.
I thought this is a good product
2
Jul 29, 2026 12:14 PM
1.1K Comments
Joined Sep 2014
m3n00bJul 29, 2026 12:14 PM
1.1K Comments
Quote from Boost_addict :
Winix units really work great I have 2 larger units (refurb C545) and one large costco C909. With all of the smoke/bad air quality this summer these really make the air in our house more manageable than the outside air. Not sure how these much smaller units do as far as CFM and noise. The large units are quiet and move a lot of cfm.
I bought the last 3 of these from the Huntington Beach Costco last weekend to upgrade from my squeaking C545s and I can say these move a ton of air. Especially after farting near one.
1
3
Jul 29, 2026 1:45 PM
2 Comments
Joined Nov 2021

This comment has been rated as unhelpful by Slickdeals users.

Pro
Jul 29, 2026 2:21 PM
3.8K Comments
Joined Jan 2006
silcam
Pro
Jul 29, 2026 2:21 PM
3.8K Comments
Quote from Xguo22 :
So you have to go to a dying warehouse to get this price?
If you want the deal, then yes. But you also need a membership, which if it's "dying", maybe you don't have?

This model does come on sale for the same price, both in-warehouse and online with $5 shipping, so if you wait it might come on sale for you to have shipped to you. It is funny that the normal sale price doesn't attract attention, but as soon as it's on clearance for the same price, a deal becomes popular. Same thing happens at my local Costco as well, people see clearance and they jump.
Last edited by silcam July 29, 2026 at 11:21 AM.
Jul 29, 2026 2:24 PM
880 Comments
Joined Jan 2015
portezbieJul 29, 2026 2:24 PM
880 Comments
We have this purifier in our bedroom, also purchased from Costco, and it works very well. We actually call ours the fart eater. Filter lasts a long time, even despite my emissions.
1

Sign up for a Slickdeals account to remove this ad.

Jul 29, 2026 6:58 PM
125 Comments
Joined Aug 2006
tmcb82Jul 29, 2026 6:58 PM
125 Comments

Our community has rated this post as helpful. If you agree, why not thank tmcb82

These would be great units if it wasn't for the cheap fan ball bearings. They go bad quick and it will start making an annoying whining noise. Even worse you can't change them without higher quality ones them without having soldering. Other than that the two I have work perfect.
2
Jul 29, 2026 7:06 PM
1.5K Comments
Joined Jun 2013
abstractedpuddingJul 29, 2026 7:06 PM
1.5K Comments

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

Quote from Xguo22 :
So you have to go to a dying warehouse to get this price?
Totally dying:

Last Quarter (Q3 Fiscal 2026)

Earnings Per Share (EPS): $4.93 reported versus $4.94 expected

Total Revenue: $70.53 billion, beating the $70.12 billion estimate

Sales Growth: Same-store sales grew 6.6%, and digital e-commerce sales jumped 20.4%

The 3.5 billion dollar increase in warehouse revenue quarterly from Q3 25 to Q3 26 is a pretty strong indicator that all Costcos will be Spirit Halloween stores any day now.
Last edited by abstractedpudding July 29, 2026 at 08:32 PM.
1
2
Pro
Jul 29, 2026 7:07 PM
719 Comments
Joined Nov 2009
gocartone
Pro
Jul 29, 2026 7:07 PM
719 Comments
Quote from tmcb82 :
These would be great units if it wasn't for the cheap fan ball bearings. They go bad quick and it will start making an annoying whining noise. Even worse you can't change them without higher quality ones them without having soldering. Other than that the two I have work perfect.
These too? I have 5 of the box shaped Winix and 1 of them has lasted a long time no issues, one makes only a little noise, one is loud, and two scream 😂 I was hoping the cylinder style would hold up better. I saw that people do the fan bearings with soldering just haven't got around to trying that.
Jul 29, 2026 7:21 PM
337 Comments
Joined Nov 2009
Slickdealio22Jul 29, 2026 7:21 PM
337 Comments
Quote from gocartone :

These too? I have 5 of the box shaped Winix and 1 of them has lasted a long time no issues, one makes only a little noise, one is loud, and two scream 😂 I was hoping the cylinder style would hold up better. I saw that people do the fan bearings with soldering just haven't got around to trying that.
No these do not have the same issue, I had 8 of the box style all went bad same way. Rather than fix them I replaced them with these, I've now had a couple running since the day they became available to buy years ago (really hated that squeaking on the c545!!) and they do not have any issues to date
1
Jul 29, 2026 7:32 PM
28 Comments
Joined Mar 2023
BraveTree1409Jul 29, 2026 7:32 PM
28 Comments
These are trash. I've owned three of them, and the fan bearings give out in less than 6 months. Good thing with Costco is that you can return them when (not if) that happens.
3
Jul 29, 2026 9:21 PM
77 Comments
Joined Nov 2013
pleasecutcardJul 29, 2026 9:21 PM
77 Comments
Quote from BraveTree1409 :
These are trash. I've owned three of them, and the fan bearings give out in less than 6 months. Good thing with Costco is that you can return them when (not if) that happens.
I'm wagering you're talking about an older, COMPLETELY different model, the C545
Jul 29, 2026 9:40 PM
1.3K Comments
Joined Oct 2008
rizorithJul 29, 2026 9:40 PM
1.3K Comments
Yeah I've had 4 winixes, 2 different models and all but 1 is squeaking like crazy. The one that isn't is 6 months old. It does make a weird humming noise on low so I can never use the auto mode. The others started squeaking within a year.

Never again
1

Sign up for a Slickdeals account to remove this ad.

Jul 29, 2026 10:02 PM
2.4K Comments
Joined Feb 2005
DarnCrazyJul 29, 2026 10:02 PM
2.4K Comments

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

These Winix C610 have less than ideal filter material (thinner) and less ease of finding 3rd party filter replacement. Costco still sells the C909, which is larger granted and usually $160 on sale, but the C909 uses standard "A" style filters which are easy to 3rd party filters on.

Also the flow rates of the C610 is weird that until you put it to the highest level, it doesn't much that much air, on the lower settings. The C909 moves a lot more air (granted bigger) at level 2 and 3 compared to the C610 which I found only moved air on the turbo setting. That said, this is $100, but I ended up returning the one I had for the C909 and have zero regrets paying the extra money upfront given filters over the lifetime would be cheaper on the C909.
1

Join The Conversation

Share your experience with the Slickdeals community

Share information with the community. Please follow our Community Guidelines and be kind!