Winix Signature U300 HEPA Air Purifier


Winix's Signature series uses CleanCel anti-bacterial coating, PlasmaWave technology, and an Advanced Odor Control carbon filter to address odors and pollutants in five stages.

  • Best for Allergies, Dust, Mold, Germs
  • Coverage: Up to 300 sq ft
  • Filter Type: HEPA
  • Warranty: 5 Year


How It Works

The Winix Signature Model U300 True HEPA Air Cleaner with PlasmaWave Technology uses a five-stage filtration process. Air first passes through a washable pre-filter with CleanCel® anti-bacterial coating to capture large particles as well as neutralize germs on contact. After the bigger particles are removed, air passes through the True HEPA filter which filters pet dander, pollen, and allergens out of the air. Then, PlasmaWave Technology breaks apart odors, chemical vapors, and pollutants at the molecular level without producing harmful ozone. Winix’s Advanced Odor Control Washable Carbon Filter works to capture and neutralize household odors from pets, cooking, and smoking.

Who Needs It

This is a great solution for people concerned with household odors and germs. While the HEPA filter captures allergens, the pre-filter, PlasmaWave technology, and the carbon filter all attack bacteria, odors, and gases in the air. The Winix Signature U300 Air Cleaner has an auto mode which responds to the air quality detected by the built-in dust sensor and odor sensor. It features an electronic display, light sensor, replace filter indicator, remote control, timer, and sleep mode function.

What's In The Box

  • Size: 21.7" Height x 16.3" Width x 10.4" Deep
  • Weight: 13.4 lbs
Filters (pre-installed in unit)
  • Washable Pre-Filter
  • True HEPA Filter
  • Advanced Odor Control washable carbon filter

Optional Features

  • None

    UPC: 08809154395497

    Basic Specs

    Coverage Area300 sq ft
    ColorsWhite with silver top
    Product Dimensions21.7" H x 16.3" W x 10.4" D
    Product Weight13.4 lb
    Package Dimensions 23.2” H x 17.7” W x 12.0” D
    Shipping Weight 18.1 lb
    Housing MaterialPlastic
    Manufactured InSouth Korea
    Assembled in South Korea

    Detailed Specs

    Particle Removal99.99% as small as 0.3 microns
    Number of Cleaning Levels4
    Noise level (ea speed) 28-52 dB
    Cubic Feet per Minute (ea speed) 45/85/131/173 CFM
    Air Intake Location Sides
    Air Outflow Location Top


    Controls TypeElectronic with display screen
    Auto Mode?Yes
    Lights on/off option?Yes
    Sleep ModeYes
    Ionizer?Yes, Plasmawave
    Ionizer on/off option?Yes
    UV Lamp?No


    Dust/Particle Sensor?Yes
    Odor Sensor?Yes
    Light Sensor?Yes
    Air Quality Sensor?Yes

    Power Supply

    Cable Length 6.8 ft
    Plug Type 2 prong (parallel)
    Power consumption (ea. Speed)3 W on low
    60 W on turbo
    Power Voltage120 V
    Energy Star Certified?Yes


    Remote Control?Yes
    Wall Mountable?No
    Child Lock?No


    Allergies Yes
    Asthma Yes
    Dust Yes
    Mold Yes
    Odor Yes
    Chemicals Yes, organic chemicals
    Pets Yes
    Smoke Yes
    Germs Yes


    Anti-bacterial Pre-Filter Washable, should be cleaned every 3 months and replaced annually
    True HEPA Filter Should be replaced annually
    Advanced Odor Control (AOC) Activated Carbon FilterWashable, should be cleaned every 3 months and replaced annually
    Filter Change Indicator Light?Yes
    Tools Required for Filter ChangeNone, but need paperclip to reset filter

    5 Year Limited Warranty

    Customer reviews for the Winix Signature U300 HEPA Air Purifier
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