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Winix > 
Item#: 9SIA3912EU1627

Winix P300 FresHome Medium Room True HEPA Air Cleaner with PlasmaWave

  • Medium room/300 sq. ft. Operates Room Size
  • CADR Rating 197/197/214 (Dust/Smoke/Pollen)
  • PlasmaWave
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Learn more about the Winix P300




3-Stage Air Cleaning
Stage 1: Carbon Pre-Filter Stage 2: 99.97% True HEPA Filter Stage 3: PlasmaWave Technology

99.97% True-HEPA Filter
True-HEPA Filter removes 99.97% of all airborne pollutants as small as 0.3 microns from the air passing through the filter. HEPA filters trap smoke, soot, micro-dust, pet dander, mold spores, pollen and most airborne microbials. HEPA which stands for High Efficiency Particulate Arresting filter is recognized as the most effective method of filtering air of contaminants and irritants. It is commonly used where a very clean environment is needed, such as aerospace, medical and high-tech manufacturing applications. Winix air cleaners use the most advanced HEPA filter technology available. Only a filter with 99.97% efficiency can claim to be 'True-HEPA."

Air Quality Sensor
Air Quality Sensor monitors the presence of airborne particles and adjusts settings automatically to deliver Set-and-Forget convenience.

Auto Mode
Smart Sensors measure room impurities and adjusts fan speed accordingly to remove them efficiently and effectively.

Carbon Pre-Filter
Carbon Pre-Filter improves the quality and the "freshness" of the air by capturing chemical vapors and odors such as those caused by cigarette smoke, organic decay and cooking. The Carbon Pre-filter extends the life of the True-HEPA filter, and should be replaced on a regular basis.

EnergyStar Qualified

PlasmaWave Technology
PlasmaWave creates Positive and Negative ions that combine with natural water vapor to form hydroxyls. Hydroxyls instantly neutralize viruses, bacteria, chemical vapors, odors and gases in the air by breaking apart their molecular structure into water vapor and other harmless air molecules. This entire process is similar to what happens in the upper layers of the Earths' atmosphere. PlasmaWave emulates the way nature cleans the air. PlasmaWave - the Cleanest Air You Can Make Yourself!

Remote Control


Operates Room Size
Medium room/300 sq. ft.
Purify Technology
CADR Rating
197/197/214 (Dust/Smoke/Pollen)
Speed Setting
4 speeds
Noise Level
26/55 (Low/Turbo)
White/Black (Body/Side)

Electrical Ratings

Power Supply
120V / 60Hz

Dimensions & Weight

13.4 lbs.

Quick Info


  • Limited Warranty period (parts): 1 year
  • Limited Warranty period (labor): 1 year

Customer Reviews of the Winix P300

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  • Brian W.
  • 11/14/2013 8:39:56 AM
  • Tech Level: Somewhat High
  • Ownership: more than 1 year
  • Verified Owner

5 out of 5 eggsFantastic Air Cleaner

Pros: * Effective air cleaner
* Small energy footprint
* no rattle or hum, even after a year of use 24/7

Cons: * none

Other Thoughts: We have two of these in a 550 sq ft office space built into a warehouse which exposes us to a fair amount of dust. When they were down for filter replacement, we noticed very quickly the air quality changed. We returned them to operational status quickly and after a couple hours, we were able to breathe easier.

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Winix > 
Item#: 9SIA3912EU1627
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