Winix Air Purifier with WiFi – Costco Sale!

by Rhonda

*UPDATE* 10/24/22.
The Winix Air Purifier from Costco is WiFi enabled so you can control it with the Winix Smart App to monitor indoor and outdoor air quality, set timers, or just use it as a remote. This latest Costco air purifier has a 4-stage filtration system that captures airborne particles and pollutants while neutralizing bacteria and viruses. Plus, this Costco package includes a 2-year filter supply!

Winix Air Purifier C545 | Costco
Winix Air Purifier C545

Costco’s Price and Sale Dates

*UPDATE* 10/24/22.
The Winix Air Purifier C545 is on sale at select Costco locations for $99.99, now through November 6, 2022. That is $30 off Costco’s regular price of $129.99. While supplies last. Prices, inventory, and sale dates may vary by location and may change at any time without notice. To see if your local Costco carries this item, give them a call and ask about item #1449587.

Winix Air Purifier C545 | Costco Sale Price

Winix Air Purifier Features

  • 4-Stage filtration system
  • Smart Sensor measures and adjusts the fan speed (low, medium or high) in real time
  • Air Quality Indicator: LED light changes based on air quality (Blue= good, Yellow- fair, Red= poor)
  • Sleep Mode Operation: when the room is darkened, the unit activates Sleep Mode for quiet and energy-efficient operation

4-Stage Filtration System

  1. Fine Mesh Pre-Filter: This permanent filter is the first line of defense against the largest particles and is washable.
  2. Activated Carbon Filter: This filter absorbs VOCs and household odors.
  3. True HEPA Filter: This filter captures 99.97% of airborne particles and pollutants as small as 0.3 microns such as pollen, dust, cigarette smoke, odors, pet dander, mold spores, and organic chemicals.
  4. PlasmaWave Technology: PlasmaWave Air Cleaning Technology creates Hydroxyls to neutralize bacteria and Influenza A virus (H3N2)

When do the filters need to be changed?

It is recommended to change the Activated Carbon Filter at least once every 3 months and the True HEPA Filter at least once every 12 months. This Costco package includes a 2-year filter supply with 8 Activated Carbon Filters and 2 True HEPA Replacement Filters.


  • Coverage: 360 sq ft
  • Dimensions: 13.7″ D x 20.5″ H x 8.4″ W
  • Weight: 11.5 lbs
  • Noise level: 54 dBA
  • AHAM certified and Energy Star compliant
  • Model C545
Winix Air Purifier C545 | Costco Display
Costco Display
Winix Air Filter 4 Stage Filtration System | Costco
4 stage filtration system
Winix Air quality numbers | Costco
Clean air delivery rate

Other options may be available at for a delivered price. While supplies last. Visit to see what’s new and to check out deals from Costco.

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