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allen999999 2.7K Views
Yesterday 2:31 PM

Costco Members: Winix C710 4-Stage WiFi HEPA Air Purifier w/ Extra Air Filter

$100

$130

23% off
+ $5 S&Hat Costco Wholesale
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Deal Details
Costco Wholesale has Winix C710 4-Stage WiFi True HEPA Air Purifier w/ Additional Air Filter ( 4449587) on sale for $99.99 valid for Costco Members only. Shipping is $4.99 or available for in-warehouse purchase (if stock permits)

Thanks to community member allen999999 for finding this deal

Note, must login to your Costco account w/ an active membership to purchase (5% for Non-Member Service/Surcharge Fee)

Editor's Notes

Written by Discombobulated | Staff
  • Price Research
    • At the time of research, this product is $30 lower (23.08% savings); normally priced for $129.99 w/ instant savings discount
  • About the Deal
    • This Winix C710 True HEPA Air Purifier features PM.25 Sensor w/ color-coded display, captures 99.99% of particles, AHAM verified (up to 384 sq. ft. & cleans rooms up to 1844 sq. ft. in one hours) w/ adjustable fan speed and auto modes
    • Up to 2 years of filtration: two all-in-one filters included
    • Offer valid through October 18, 2026 or while promotional offer/supplies last
  • Additional Details
    • Selected warehouse price shown (this item may be available at other warehouses; warehouse availability & pricing varies)
    • Costco products can be retuned to any of the more than 800+ Costco warehouses worldwide

Original Post

Written by allen999999
Community Notes
About the Poster
Deal Details
Community Notes
About the Poster
Costco Wholesale has Winix C710 4-Stage WiFi True HEPA Air Purifier w/ Additional Air Filter ( 4449587) on sale for $99.99 valid for Costco Members only. Shipping is $4.99 or available for in-warehouse purchase (if stock permits)

Thanks to community member allen999999 for finding this deal

Note, must login to your Costco account w/ an active membership to purchase (5% for Non-Member Service/Surcharge Fee)

Editor's Notes

Written by Discombobulated | Staff
  • Price Research
    • At the time of research, this product is $30 lower (23.08% savings); normally priced for $129.99 w/ instant savings discount
  • About the Deal
    • This Winix C710 True HEPA Air Purifier features PM.25 Sensor w/ color-coded display, captures 99.99% of particles, AHAM verified (up to 384 sq. ft. & cleans rooms up to 1844 sq. ft. in one hours) w/ adjustable fan speed and auto modes
    • Up to 2 years of filtration: two all-in-one filters included
    • Offer valid through October 18, 2026 or while promotional offer/supplies last
  • Additional Details
    • Selected warehouse price shown (this item may be available at other warehouses; warehouse availability & pricing varies)
    • Costco products can be retuned to any of the more than 800+ Costco warehouses worldwide

Original Post

Written by allen999999

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+16
Good Deal

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11 Comments

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Yesterday 3:30 PM
234 Comments
Joined Nov 2019
danas619Yesterday 3:30 PM
234 Comments
Are these very quiet?
Yesterday 4:01 PM
298 Comments
Joined Aug 2009
dealferretYesterday 4:01 PM
298 Comments
Let me guess. Plasmawave is on by default?
1
Yesterday 5:47 PM
787 Comments
Joined Jan 2010
mystiqueskillzYesterday 5:47 PM
787 Comments
How does this air purifier compare to the Winix C909 that's on sale at Costco for $160?

https://www.costco.com/.product.100842491.html
Yesterday 5:56 PM
1.6K Comments
Joined Dec 2007
VMaskedYesterday 5:56 PM
1.6K Comments
Quote from dealferret View quoted comment :
Let me guess. Plasmawave is on by default?
ugh plasmaswave...

I rather buy the cheaper models that don't have it
1
Pro
Yesterday 6:00 PM
2.1K Comments
Joined Jun 2017
ctcsd
Pro
Yesterday 6:00 PM
2.1K Comments
Quote from VMasked View quoted comment :
ugh plasmaswave...

I rather buy the cheaper models that don't have it
I don't use Plasmawave either, but my fan is always on so never have to worry about it. Are you not liking it on by default because you use a smart switch to turn it on and off, or power outages etc?
Yesterday 6:04 PM
211 Comments
Joined Mar 2004
ChatmanRYesterday 6:04 PM
211 Comments
Quote from VMasked View quoted comment :
ugh plasmaswave...

I rather buy the cheaper models that don't have it
Winix C710: If this unit is going into a standard bedroom or standard closed room, buy the Winix C710 on Costco for $99.99. It saves you $60 while offering identical smart capabilities and the exact same medical-grade PlasmaWave air scrubbers.Winix C909: If you are trying to purify a main open living room, a high-ceiling kitchen, or a wide basement, spend the $160 on the Winix C909. The extra $60 buys you the physical fan velocity needed to move air across a vast open space effectively.
1
1
Yesterday 6:41 PM
787 Comments
Joined Jan 2010
mystiqueskillzYesterday 6:41 PM
787 Comments
Quote from ChatmanR View quoted comment :
Winix C710: If this unit is going into a standard bedroom or standard closed room, buy the Winix C710 on Costco for $99.99. It saves you $60 while offering identical smart capabilities and the exact same medical-grade PlasmaWave air scrubbers.Winix C909: If you are trying to purify a main open living room, a high-ceiling kitchen, or a wide basement, spend the $160 on the Winix C909. The extra $60 buys you the physical fan velocity needed to move air across a vast open space effectively.
Thank you!!

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Yesterday 6:55 PM
58 Comments
Joined Oct 2005
riteshypatelYesterday 6:55 PM
58 Comments
Quote from danas619 View quoted comment :
Are these very quiet?
Very.
Yesterday 10:42 PM
87 Comments
Joined Nov 2018
sangnguyenzYesterday 10:42 PM
87 Comments
Can anyone explain why pp get rid of plasmawave? Appreciate it
Today 1:16 AM
2.7K Comments
Joined Jan 2004
holysinToday 1:16 AM
2.7K Comments
Quote from sangnguyenz View quoted comment :
Can anyone explain why pp get rid of plasmawave? Appreciate it
Because they are absolutely paranoid about ozone or are EXTREMELY sensitive to it to the point they couldn't live in a city in the summer and go outside without a filter (the plasma wave creates an extremely small amount of ozone. Such a small amount that even California says it's not dangerous and they put a label on damn near everything.)

Details if wanted- CARB Standard: California law requires portable air cleaners to emit less than 0.050 ppm (50 ppb) of ozone to protect indoor air quality. Winix produces roughly 3 ppb (0.003 ppm) to 0.01 ppm of ozone.
Last edited by holysin September 21, 2026 at 06:25 PM.
2
1
Today 7:19 AM
1 Comments
Joined Jul 2021
RRodr395Today 7:19 AM
1 Comments
These are 70 bucks at my local Costco

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