winix c535 air cleaner

Winix C535 Quick Review

The Costco bound Winix C535 is an attractive air purifier in all aspects. It has decent filtration performance, well spec including Auto/ Sleep mode and a price everyone can agree on. Identical to Winix 5300-2 in many ways from filter setup, purifying coverage to CADR and noise level, is Winix C535 air cleaner a better version to the former and does it share the same advantages and disadvantage? Continue reading to learn more.
± 139.99 p
     Annual filter ^    
± 80 p
Online price*
Latest Amazon price

Winix C535 Specification

ProductWinix C535
RSPMRSP/ RSP +- 139.99
15 x 23.6 x 7.8 in
(38.1 x 59.9 x 19.8 cm)
Weight17.6 lb (8 kg)
Coverage (up to)360 sq. ft. (33 m2)
Dust free (CADR)243 cfm (413 m3/h)
Pollen free (CADR)246 cfm (418 m3/h)
Smoke free (CADR)232 cfm (394 m3/h)
Airflow speed35.3 - 240.1 cfm (60 - 408 m3/h)
A filterAnnual filter cost ($)+- 80
- Lifespan
- Replacement cost ($)
HEPA filter
- Lifespan
- Replacement cost ($)
True HEPA filter
1 year
Carbon filter
- Lifespan
- Replacement cost ($)
Odor Absorbing Carbon Filter
3 months
Ionizer/ TechnologiesPlasmaWave Technology
UV-light/ PCO
Other filter
All-in-one filter
- Lifespan
- Replacement cost ($)
Filter A 115115
1 year
+- 79.99
Optional/ Addon
Noise level27.8 - 60+ dB
Power consumption65 W
Timer/ Scheduler1, 4, 8 hours
SensorsVOC sensors (Air quality)
More color options
Auto mode
Air qualityAQ indicator
Filter change indicator
Wi-Fi/ BTBluetooth
Remote control
Child lock
Warranty2 years
Email/ Phone support

Product image

Winix C535 key features

  • 4-stage filtration with PlasmaWave Technology
  • Pre-filter
  • True-HEPA filter
  • Odor Absorbing Carbon Filter
  • 4 speeds (Low, Medium, High, Turbo)
  • Auto mode/ Sleep mode
  • Timer (1, 4, 8 hours)
  • VOC sensor/ Light sensor
  • 2 years warranty
Winix C535 dimension
15 x 23.6 x 7.8 in
(38.1 x 59.9 x 19.8 cm)
Winix C535 weight
17.6 lb (8 kg)

Commendable overall appearance and build quality although not U.S. made (sorry patriotic guys), Winix C535 has the familiarity and reliability from Winix air purifier lineup. The white exterior house all the filters that is easily changeable via the removable of front cover. At top you have all the standard controls for your fanspeed, timer and PlasmaWave activation. Bonus for Winix C535 air purifier is the inclusion of remote control which is not available in Winix 5300-2.

Airflow capability and purifying coverage

Winix C535 has the exact same spec as Winix 5300-2 so expect decent airflow delivery rate and purifying coverage. At 360 sq. ft., Winix C535 would cover most bedroom, kitchen, living room without resorting to maximum speed all the time. The 4 speed, 4-stage filtration comes with the complete set pre-filter, True HEPA, carbon sheet filter and PlasmaWave technology. With all that, Winix C535 can easily wipe out airborne contaminants quickly and effectively from dust, mold, pet dander, bacteria to mild odor from cooking, detergent and cigarette smoke.

Noise level and power consumption

Winix C535 noise level is relatively low that can be use in bedroom throughout the night. Very little noise at low fanspeed, soft noise at medium fan speed and audible noise at max 4 speed. Power consumption wise Winix C535 65 W will not have significant impact on your electricity bills, but when the air purifier is running 24×7, that is the time you may possibly feel the difference. Power usage is minimal at low fanspeed and comparatively average at fourth fanspeed. When put next to usual home appliances, Winix C535 all-round electricity usage is pretty good in comparison.
noise graph

Final thoughts on Winix C535

To recap, Winix C535 is a Costco tied model mirror to Winix 5300-2 specification. You’ll get all the good stuff like comprehensive filtration with wide purifying coverage, consistent airflow delivery rate and abundant of features, unfortunately the bad stuff like poor odor filtration and hassle filter change is bundle in as well. Both models would do you well but if remote control is a must for you, Winix C535 would be the eventual winner.

Winix C535 is covered against

Winix C535 VS Dust



Winix C535 VS Pollen



Winix C535 VS Hair

Hair/ Pet hair


Winix C535 VS Dust mite

Dust mites


Winix C535 VS Mold/ Mildew

Mold/ Mildew


Winix C535 VS Pet dander

Pet dander


Winix C535 VS Virus/ Germ

Virus/ Germ


Winix C535 VS Tobacco smoke

Tobacco smoke


Winix C535 VS Chemical



Winix C535 VS VOCs



Winix C535 VS Smoke/ Gas

Smoke/ Gas


Winix C535 VS Odor



Winix C535 4-stage filtration and 360 sq. ft. purifying applicable area is terrific when pit against allergens, irritants, viruses and bacteria. It is vastly efficient on large airborne pollutants such as dust, hair, pet hair. On the one hand against tiny pollutants, Winix C535 35.3 - 240.1 cfm 4 speed airflow input/ output + True HEPA filter is distinctive at capturing pet dander, dust mites, pollen, mold and mildew.  On smokes and odors, Winix C535 Odor Absorbing Carbon Filter filtration is weak in handling chemicals, odors, cooking smell, fire, VOCs, tobacco smokes, cigarette, vapor, radon and ammonia.

In conclusion......

  • Very attractive price tag with decent filtration performance and features.
  • 4-stage filtration including PlasmaWave Technology.
  • Deodorization carbon sheet filter for basic household odors and gases.
  • True-HEPA filter that can handle even the smallest allergens and bacteria.
  • 4 speed including Auto mode and Sleep mode.
  • Built-in timer with 3 pre-set setting.
  • 2 years warranty.
  • Limited availability has this is a Costco specific model.
  • Use carbon sheet rather than the more efficient AOC carbon filter.
  • Carbon filter sheet requires change every quarterly.
Build quality
Airflow delivery
Particle Filtration
Smoke Filtration
winix c535 air cleaner

Frequently Asked Questions (FAQ)FAQ

What is PlasmaWave ® Technology?

PlasmaWave is Winix exclusive, patented technology that emit positive and negative ions in order to form hydroxyls. The ions and natural water vapor combination Hydroxyls (OH) will breaks apart chemical, odors, allergens and other airborne pollutants at the molecular level. PlasmaWave is available in all Winix air purifiers and it does not produce any harmful ozone as certified by California Air Resources Board (CARB).

PlasmaWave produces hydroxyls, what is hydroxyls and is it dangerous?

Hydroxyl radical is a safe, naturally-occurring, reactive molecule formed by single oxygen and hydrogen bonding (OH). Winix PlasmaWave would replicate this natural process by producing hydroxyls to eliminate noxious gases including volatile organic compounds (VOCs), deodorize odors and destroy microorganisms like bacteria, mold, mildew. An optional feature where user have the option to activate or deactivate PlasmaWave in Winix C535 air purifier.

Can I turn off the PlasmaWave feature in Winix C535 air purifier?

Yes Winix C535's PlasmaWave feature can be disabled via the control panel.

What does the Winix C535 limited warranty cover?

Winix C535 limited warranty will cover air purifier from manufacturer defect (materials and workmanship) at Winix own discretion. The defective product must be within the warranty period and free from any tampering, accidental damage and mishandling. Proof of purchase date must be presented before any repair or exchange commence. Warranty will be null and void if Winix C535 air purifier is used for non-home or consumer purposes. If you air purifier fulfilled all the stipulated conditions, you may call 1-877-MY-WINIX (1-877-699-4649) for repair validation and arrangement.

Where is Winix C535 air purifier made from?

Winix C535 air purifier is made and manufactured in South Korea.

What is the function of Air Quality Sensor with Auto-Mode?

Air quality sensor or particle sensor detects the level of harmful particles in its surrounding. Using the information collected from the AQ sensor, Auto-Mode would automatically adjust the ideal speed accordingly. That way you get the best of both worlds in performance and energy-efficiency. All Winix air purifiers come with air quality sensor and Auto mode.

Is Winix C535 air purifier wall mountable?

No Winix C535 is not wall mountable.

Does Winix C535 comes with all the filters for this price or do we need to buy the filters separately?

By default, Winix C535 comes bundled with all the filters required for the air purifier to work.

How do you clean the pre-filter?

Winix permanent pre-filter or specific carbon pre-filter can be wash through vacuuming or rinsing. Simply remove the front pre-filter from the air purifier and rinse it with water to clear out all dust particles. The pre-filter must be completely dry (air-dry or hair dryer) before installing back into the air purifier.

Should I vacuum Winix C535's carbon filter or HEPA filter periodically to boost the filters lifespan and usability?

Other than the AOC filter that requires cleaning once every 3 months, there is no need to vacuum the carbon filter or true HEPA filter before replacing them as the filters would be protected by the pre-filter from having contact with larger particles like dust. Furthermore, improper conduct on the carbon or HEPA filter could have a reverse effect that damage the filters usability and re-release the trapped particles like allergens, germs and bacteria out. You would, however need to clean the permanent pre-filter periodically or every 14 days depending on how much dust is accumulated by the filter.

Is Winix C535's True HEPA filter washable?

You should never wash or even vacuum Winix C535's HEPA filter unless it is clearly stated in the instructional manual. HEPA is a type of mechanical filter made completely from thin fibers. The water flow from washing or rinsing would cause irreversible damage to the HEPA filter by pushing the gap between the fibers. With opened gaps between each fibers, the HEPA filter lose its efficiency allowing fine particles like allergens pass through the filter easily.

Where do I find Winix C535 replacement filter?

You can find the replacement filter for Winix C535 from their official website or at Amazon. Always refer to the instructional manual on the correct filter replacement code or through our product specification section.

Can you use an extension cord to power Winix C535?

Yes you can use it on Winix C535 air purifier as long as the extension cord is not damaged or overloaded from too many connected appliances that end up consuming more watts than the cord can take in.

When Auto mode is selected, sleep mode is enabled by default?

When Winix C535 is in Auto mode, sleep mode will also automatically engage when the lights go out. You will have to manually select any of the speed to disable both auto mode and sleep mode.

Winix C535 Troubleshooting

Safety Tips


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