Winix C535 Review In 2023: Staple Of A Good Air Purifier

A hidden gem that many people missed out on. Winix C535 air purifier is an exceptional model well-packaged at an accessible price point. You will not find any cutting cost measure with its complete 4-stage PlasmaWave and auto/ sleep mode. What type of filters are bundled in? How effective is the air filtration against microscopic particles? Should you go with this or the replacement model? Read more in our full Winix C535 review below.
online price (US)**
±139.99 $$$/ 7

(annual filter cost ±80)

** MRSP (Manufacturer's Suggested Retail Price)/ RSP (Retail selling price) is accurate at the time of posting.
^ Annual filter cost is calculated based on filter price and 12 hours of usage. Pricing could vary depending on air quality, usage frequency, and speed.
` The indicated online price guides as follows: $ = under $50, $$ = $50-100, $$$ = $101-200, $$$$ = 201-300, $$$$$ = $301-400, $$$$$$ = 401-500, $$$$$$$ = over $500.

Winix C535 Specification

ProductWinix C535
15 x 23.6 x 8.2 in
(38.1 x 59.9 x 20.8 cm)
Weight15.4 lb (7 kg)
Coverage (up to)360 sq. ft. (33 m2)
Airflow speed56.5-197.8 cfm (96-336 m3/h)
Dust free (CADR)243 cfm (413 m3/h)
Pollen free (CADR)246 cfm (418 m3/h)
Smoke free (CADR)232 cfm (394 m3/h)
Humidifying(H) speed
- Lifespan
- Replacement cost ($)
HEPA filter
- Lifespan
- Replacement cost ($)
True HEPA filter
1 year
Carbon filter
- Lifespan
- Replacement cost ($)
Activated Carbon Filter
3 months
Ionizer/ TechnologiesPlasmaWave Technology
UV-light/ PCO
Other filter
All-in-one filter
- Lifespan
- Replacement cost ($)
Filter A 115115
1 year
+- 79.99
Optional/ Addon
Winix Ultimate Pet Filter U replacement pack (12 pack)
12 months+- 19.99
Noise level27 dB
Power usage level5-70+ W
Timer/ Scheduler1, 4, 8 hours
SensorsDual Smart Sensors
Auto mode
Air qualityAQ indicator
Filter change indicator
More color options
Wi-Fi/ BTBluetooth
Remote control
Child lock
Warranty2 years
Email/ Phone support

Key Features

  • 4-stage filtration with PlasmaWave Technology
  • 5 fan speeds with Auto mode
  • Air quality indicator - Blue (good), Amber (fair), Red (poor)
  • Washable Pre-Filter
  • True-HEPA filter - 99.999% efficiency
  • Activated Carbon Filter
  • Timer (1, 4, 8 hours)
  • 5 fan speeds with Auto mode
  • Automatic Sleep mode
  • Dual Smart Sensors (VOC/ light)
  • 2 years warranty

Design and Usability

Solely base on the exterior, you can hardly tell Winix C535 is in the market for quite some time. This clean and modern air purifier stands at only 15.1 x 23.5 x 8.7 inches in size with a weight of 15.4 pounds. The entire body might be plasticky built, there are no signs of poor alignment or leakage sighted. Featuring a classic front air inlet and a top air outlet layout, usability is good where you can grab onto the back handle for room to room cleaning. We have zero issues moving and placing it in a room with its conventional boxy size.

Control-wise, Winix C535 simple control layout is very easy to get the grip on. You have a 5 selected speed with an auto mode that auto-regulates the speed based on the indoor air quality. Auto Sleep mode sets the fan speed to the lowest, disable indicator lights and PlasmaWave for night use. You can also disable the PlasmaWave technology manually if you choose to. Winix C535 Smart sensors measure air quality by detecting the level of airborne particles, smoke, and VOCs in the room. The top air quality indicator will illuminate from Blue when air quality is good, Amber, to Red when air quality is poor. The built-in 1, 4, 8 hours timer can be preset to shut down the air purifier to save energy. Lastly, the filter change indicator alerts users to replace the filter when necessary.

Overall, Winix C535 holds true to its brand with exceptional build quality and reliability. It is also AHAM Verifide, Energy Star certified, UL listed, and comes with a standard 2 years warranty (1-year for refurbished model).

Airflow, Coverage, And CADR

Enjoy instant clean air with Winix C535 air purifier. It is AHAM Verifide to deliver 360 square footage of room size without any hiccups. The strong airflow output can further increase the room coverage to 1,740 sq. ft. with 2 air changes per hour. For those that are hypersensitive or with asthma, you can further increase the clean air frequency to 4 air changes per hour or every 15 minutes but with a reduced 435 sq. ft. air cleaning coverage. In any case, Winix C535 is suitable for living room, bedroom, kitchen, apartment, and nursery home. The AHAM verified Clean air delivery rate (CADR) has decent ratings of 243 cfm for dust, 246 cfm for pollen, and 232 cfm for smoke. The result holds true during our test (with PlasmaWave disabled) so we have no doubt you should be getting similar results in your home.

Filters And Performance

Winix C535 is powered by the excellent PlasmaWave Technology that remains unchanged for years. When air is drawn in, the outer mesh pre-filter traps large airborne particles like dust, hair, lint and prevents them from clogging the inner filter. The permanent pre-filter is washable so there is no need to replace it annually. The activated carbon filter absorb smoke and odors from cooking, pets, cigarette, chemicals e.g. VOCs, radon, asbestos, formaldehyde. With smoke particles all gone, The HEPA filter usage life can be extended for all-day use. The True HEPA filter removes 99.999% microscopic particles in the air including PM2.5 like mold, mildew, pollen, pet dander, germs. To help further clean the air, PlasmaWave Technology disperses Hydroxyls that remove hydrogen from the molecular structure of the airborne irritants. The process is safe as only negative and positive ions are dispersed with no harmful byproducts like ozone.

Noise And Energy Usage

Another strong suit of the Winix C535 air purifier is the silent operation. In sleep mode, the noise level can go as low as 27 dB which is equivalent to a library ambient noise. Perfect for children's bedroom or workplace when you need absolute silence. Power output is also low with auto mode and sleep mode enabled. You can run it 24 hours a day without having to worry about the utility bill.
Noise TypeDecibels
Winix C53527 dB
Breathing10 dB
Rustling leaves20 dB
Whispering/ Quiet library30 dB
Light rainfall40-50 dB
Conversation50-60 dB
Vacuum cleaner/ Hair dryer/ Washing machine65-80 dB
City traffic80-90 dB

Pricing And Maintainence Cost

Winix C535 is very well priced with an online sticker price of under 200 dollars. It is worth every penny but stock availability is limited with most are refurbished models. Alternatively, consider the Winix C545, AM80, or AM90 that offers similar performance and is still available in the market. Filter replacement stock is plentiful and will only cost you under 80 dollars for the set. Do keep in mind that an air purifier is a long-term commitment that you will have to bear the recurring fees for years to come.
As mentioned earlier, Winix C535 air purifier is a dated model so availability is not great. We manage to find some units on Amazon including used models with a huge discount. You will also enjoy a standard return policy and free shipping with a Prime member. Alternatively, you can try your luck on Winix's official website but last we checked, only certified refurbished models are available. Other smaller retailers may also carry the product but with a less competitive price point than Amazon.

Final Thoughts On Winix C535

Is a little bit too early to judge on Winix HR900 as there are only 32 reviews on Amazon. Out of that, 97% gave it 4-5 stars that praises mostly on the 5-stage filtration strength. No surprise gave the usefulness of the True HEPA and AOC carbon filter. Other positive feedback includes durability, features, and pricing. Most reviewers are happy that their allergies reduced since the day HR900 arrived. You should expect the same outcome since most reviews is still very new. Remember this space if you want to find out about other comments users has updated since.


  • Decent pricing for a 5-stage filtration specialized in pet allergies.
  • 300 square feet purification is a big leap from the previous WAC9500 model.
  • Double protection with Ultimate pet pre-filter on top of the existing pre-filter.
  • Dependable True-HEPA and AOC carbon filter that is effective with contaminants.
  • Powerful 4 fan speed plus Auto mode and Sleep mode.
  • Built-in timer and child lock that is easily accessible through the control panel.
  • Improved 2 years warranty than the previous 1-year warranty.


  • High annual filter replacement cost especially if you add the ultimate pet filter.
  • Slightly expensive as the cheaper Winix 5500-2 can do the same job with the ultimate pet filter add-on.
  • Smart sensors inconsistent reaction time with the surrounding airborne particles.
winix c535 air cleaner

Max Fernandez

A loving father and a dedicated reviewer for airfuji.com with more than 1000 air purifiers under his belt. Max Fernandez is also one of the million patients currently suffering from asthma. Feel free to nudge him if you have any questions.

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