airpura r600 VS. Bissell air400 Air Purifier

It features a True HEPA filter that removes up to 99.97% of airborne particles that are as small as 0.3 microns in diameter.

It can clean air in areas of up-to 1650sq.ft with 2 air changes per hour or 550sq.ft with 6 air changes per hour.

It uses an 18-pound activated carbon filter to collect and remove common household-odors including; cigarette-odor and other chemical pollutants.

This unit can clean air in rooms of up-to 1650sq.ft and also features a 360° air intake and outflow coupled with a variable speed control.

It offers excellent removal of all germs and other airborne-particles down to 0.3-microns using the integrated True HEPA filter.

Uses an activated-carbon and a True HEPA filter to trap and eliminate dust-mites and other air-pollutants within your home environment.

It uses a True HEPA filter to remove up-to 99.97% of airborne-particles including pet-dander so that you can live more comfortably with pets.

It uses a True HEPA filter to effectively remove 99.97% of airborne-particles including pollen and other allergens from your home-environment.

It uses a high-quality activated carbon filter to collect and absorb a variety of chemical-pollutants including; smoke, odors and other toxic gases.

This device uses a True HEPA filter to eliminate mold-spores and other airborne-particles from your home-environment.

This unit provides excellent removal of all allergens and other airborne-particles down to 0.3-microns with an average particle-removal efficiency of 97%.

The unit's backward-curved impeller helps eliminate vibrations and noise associated with conventional air purifier motors. This facilitates for quiet-operation even at the highest speed-setting.

It features easy to replace filters that can be changed separately to help you save on operating costs. In fact, you don't need any professional-help.

It uses 40-Watts at the lowest speed-setting and 120-watts at the highest speed-setting coupled with a voltage of 110-to-120V.

It features manual-controls which include; power-button and 2 fan-speeds that use an adjustable-knob. This makes it very simple to use compared to other advanced air-purifier brands.

It’s economical because it uses only 40watts on the lowest speed-setting and 120watts on the highest-speed-setting. It also features a universal power-voltage of 110-to-120V.

It’s a perfect air-purifying solution for anyone who suffers from asthma, allergies and multiple chemical sensitivities because it features a True HEPA filter.

The carbon-activated-filter must be replaced every 2-years while the True-HEPA-filter needs replacement every 5-years. The Pre-filter should be vacuumed every 2-to-3 months and replaced every 12-months.

This unit doesn’t produce ozone-pollutants because it features a pressure seal on the filter-chamber and it’s free of any chemicals that cause off-gassing.

It features a 100% metallic housing with a circular tower-shape coupled with rolling-caster-wheels at the base for easy movement and placement within your home.

It features dimensions of: 23"H X 15"W which makes compact and it also features an all-metal body with controls on top and caster-wheels at the base.

It weighs about 45-lbs whereby its carbon-filter alone weighs 18-lbs which make it a bit heavy for some people to lift and move around the house.