Winix HR900 5 Stage True HEPA Filtration Air Purifier VS. Bissell air400 Air Purifier

Has an Anti-microbial 5 stage True HEPA Filter that can capture and eliminate 99.97% airborne pollutants as small as 0.3-microns.

Features a Timer-button that allows you to set the unit to operate for 1, 4, or 8 hours. The Timer LED light will indicate the selected length of operation.

Uses a CD Carbon Filter to trap and eliminate different household odors including; cigarette odor.

Designed for use in small-to-medium-sized rooms of up to 300Sq.Ft. It also takes in polluted air from sides while clean purified -air comes out from the top-front section.

Uses PlasmaWave-Technology and an Anti-microbial True HEPA Filter to destroy germs, bacteria and other indoor pollutants.

The Anti-microbial True HEPA Filter helps to trap and eliminate dust-mites while the Washable Pre-Filter helps to trap large dust-particles.

Its Anti-microbial True HEPA Filter will help to capture 99.99% of airborne-pollutants including; pet-dander.

The Anti-microbial True HEPA Filter can eliminate airborne-pollutants like pollen down to 0.3-microns at an efficiency-rate of 99.97%.

The CD Carbon-Filter coupled with PlasmaWave-Technology will help to eliminate cooking smoke, cigarette smoke, and other household odors.

Its Anti-microbial True HEPA Filter will help to eliminate mold-spores at an efficiency of 99.97% down to 0.3-microns.

This unit can trap and eliminate 99.97% of allergens and other airborne pollutants using an Anti-microbial True HEPA Filter coupled with PlasmaWave-Technology.

This unit is whisper-silent on sleep mode and it’s also really quiet when running on the lowest fan speed making it perfect for use in rooms that require optimum silence.

This unit comes with a Washable Pre-Filter which is the first line of defense against large particles.

Its filters are very easy to access and replace by simply removing the front panel using a screwdriver.

Features an Auto-mode which works along with Smart-Sensors to monitor the air quality and then automatically adjusts fan-speed in order to equalize the airborne pollutants and create clean air.

When Sleep-mode is selected, the fan speed is automatically set to Low and the Air-Quality light is disabled. This will help you achieve a quiet and relaxed night-time operation.

This unit uses 11-watts on the lowest speed-setting (sleep-mode) and 90-watts on the highest speed-setting (Turbo-mode). It also has a power voltage of AC 120V @ 60Hz.

It’s Energy Star Certified for low power consumption at only 90-watts at the highest speed setting and only 11-watts at the lowest speed setting.

It has a control panel at the top section with several modes including; Auto, sleep, PlasmaWave, Fan-speed, Timer, child-lock coupled with multiple LED indicators and sensors.

When the Check Filter indicator LED is on, it is time to replace both the Anti-microbial True HEPA and CD Carbon filters.

This unit is very energy-efficient and will help you save on electricity bills annually.

It’s affordable compared to other advanced air-purifier models with similar smart features.

Uses an Anti-microbial True HEPA Filter and PlasmaWave-Technology to eliminate 99.97% of allergens that cause asthma.

The (CD) Carbon Filter should be changed every 6-months and the True HEPA Filter needs to be changed every 12-months of constant usage. The Pre-filter is washable and permanent.

It uses PlasmaWave-Technology to eliminate airborne pollutants without emitting harmful-Ozone which makes it Eco-friendly.

Has a tower-shaped structure with a display-control panel at the top section coupled with an air-quality LED light at the front? It also has a white, stylish body made of ABS plastic.

It features dimensions of 16.3” W x 9.6” D x 23.6” H which makes it very slim and portable. It even has a white, tower-shaped body made of durable ABS plastic.

18.7-pounds and this makes it very easy to lift and move from room to room.