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Winix Air Purifier, C535, 4-Stage Cleaning with 2 Years of Filters. Max Room Capacity 1776 sq ft.

4.6 stars out of 2000 reviews
(4.6)|
2,000 ratings

Key item features

  • Powerful Coverage: Cleans rooms up to 1,776 sq ft in one hour, with AHAM verification for 370 sq ft, ensuring efficient air purification for various room sizes.
  • Advanced Filtration: Features a 4-stage system including a washable pre-filter, activated carbon filter for odors and VOCs, and a True HEPA filter capturing 99.99% of particles as small as 0.003 microns.
  • Smart Air Sensing: Built-in air quality sensors and an indicator display real-time air quality, while Auto Mode adjusts fan speed for optimal cleaning.
  • PlasmaWave Technology: Incorporates PlasmaWave Air Cleaning Technology to help reduce airborne impurities, pollutants, and allergens.
  • Quiet Operation: Operates at a nearly silent 27 dB on its slowest speed, and includes an automated Sleep Mode that activates in darkened rooms for quiet, energy-efficient use.
  • Certified Reliability: The unit is proven dependable and efficient, holding both AHAM Verified and UL Certified distinctions.
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Current price is $158.00
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Customer ratings & reviews

4.6 out of 5 stars
stars2,000 ratings822 reviews
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Reviews summary

Pros
  • : Automatically switches to sleep mode in low-light conditions.
  • : Has a sleek and space-saving physical build.
  • : Works well in rooms, improving air quality.
  • : Made with high-grade components and build.
  • : Runs with minimal audible sound.
Neutral
  • : Can be effective, but inconsistent in eliminating smells.
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Showing 1-3 of 822 reviews

Sep 8, 2025
ncquilter
Item details
Color: White
5 out of 5 stars review

Verified Purchase

Truly works and very quiet.

This unit is so quiet you cannot even tell it's on most of the time. It's easy to use and maintain and definitely improves air quality. I originally purchased one of these for my elderly parents to help with their air quality in their home because they were both having issues breathing more than was typical. After getting this they found their breathing issues were relieved and thus I purchased one for my own home. I find that it definitely helps with my asthma and has alleviated some of my allergy issues. I'd recommend this product if you want an affordable and truly useful air purifier.

Helpful?3517X4UPAGVP944548256
Oct 18, 2025
Sandy
Item details
Color: White
5 out of 5 stars review

Verified Purchase

good product

It's works well and I like the unit overall. The auto feature is great except for sleep mode. it automatically kicks into sleep mode according to lightning. it can be manually overridden but, it seems, that defeats the purpose of the auto mode.

Helpful?3517X4UPAGVP944548256
Sep 23, 2025
David
Item details
Color: White
5 out of 5 stars review

Verified Purchase

Beautiful machine

This is a beautiful machine. Fan is perfectly balanced and quiet. Can be set up to turn of lights on the control panel at night so you can have it right next to your bed. The night feature also slows the fan to silent. Comes with an extra set of filters.

Helpful?3517X4UPAGVP944548256