Signature Series



Covers a room up to 300 sq ft


Covers a room up to 450 sq ft

Signature Series Features

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5-Stage Air Cleaning

Winix's Signature Series air purifiers combine our advanced technologies to create an effective 5-Stage air cleaning system. The Signature Series removes a broad range of odors, allergens, and other airborne pollutants including: dust, smoke, pollen, pet dander, mold, bacteria, viruses, and VOCs.

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PlasmaWave Technology

The FresHome Series uses PlasmaWave™ Technology to safely break apart odors, allergens, chemical vapors, and other pollutants at the molecular level, without causing harmful ozone. PlasmaWave™ creates positive and negative ions that combine with natural water vapor to form hydroxyls, which perfectly cleans the indoor air.

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Advanced Odor Control (AOC) Washable Carbon Filter

Our Advanced Odor Control (AOC) Washable Carbon Filter is 3 times more effective at capturing and neutralizing odors created by pets, cooking, smoke, and many other household contaminants found in the air.

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Air Quality Sensor with Auto-Mode and Visual

Winix specially formulated their Activated Carbon Pre-Filter to capture offensive household odors caused by pets, smoke, cooking, and many other odors found within your home. This filter is also coated with CleanCel® to neutralize germs and bacteria upon contact.

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True-HEPA Filtration

Winix's True-HEPA Filtration captures 99.97% of airborne pollutants, pet dander, pollen, mold spores, and a variety of other allergens as small as 0.3 microns.

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4 Fan Speeds

Your Signature Series air purifier has 4 fan speeds that allow for whisper low and energy efficient cleaning in Quiet Mode, and ultimate performance in Turbo Mode.

Signature Series Reviews

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Select a Product to Review LG U300 XL U450

Signature Series Specifications





MODEL U300 U450
ITEM # 114100 114200
Product Name Signature U300 Signature U450
Replacement Filter # 114190 114290
PlasmaWave® Technology Yes Yes
Odor Absorbing Carbon Filter Yes Yes
Energy Star Qualified Yes Yes

Signature Series Support

Protect your purchase! Winix is now offering extended warranties on all products.

Choose the warranty that’s right for you.

Have questions or need more help? Visit our FAQ page or contact us.

Signature Series Filters

U300 Filters

Size 21 Washable Ultimate Filter Cartridge

Signature Series Size 21 Washable Ultimate Filter Cartridge

Buy $119.99

U450 Filters

Size 25 Washable Ultimate Filter Cartridge

Signature Series Size 25 Washable Ultimate Filter Cartridge

Buy $139.99