Winix C909 4-Stage Air Purifier

• Costco now offers Winix C909 Four-Stage Air Purifier, priced at $164.99 (MSRP $199.99).
• Free shipping within the United States.
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Editor's Pick: This air purifier features a four-stage filtration system combined with PlasmaWave technology, capable of purifying spaces up to 500 square feet. It connects via Wi-Fi for remote monitoring and control. The unit operates quietly with noise levels as low as 25 decibels at the lowest setting and is both Energy Star and UL certified. The package includes a two-year supply of filters: 2 True HEPA filters and 8 activated carbon filters.