Whirlpool Whispure Air Purifier WP1000 VS. Bissell air400 Air Purifier

True hepa filter – arrests 99.97% of particles as small as 0.3 microns. Coordinates with the charcoal filter to keep indoor air fresh and clean.

Auto off set timer – allow you to set a given time of operation. After which the timer will automatically turn off.

Cleans large rooms within 490 square feet. Ideal for homes and office rooms.

Active carbon filter removes cigarette odor and other smells. Suitable for indoors with cigarette smokers and strong smells from pets, kitchen etc.

Room coverage of 490 square feet. Airflow covers the entire range within a short time with CADR rate of 315 cfm. Has 4.8 changes of air per hour.

Fights germs to a size of 0.3 microns. Filters germs like bacteria and viruses and keeps you healthy.

Eliminates dust mites that cause indoor air stuffiness. Usually hidden in thick material like carpets. Causes throat irritation and breathing difficulty.

True hepa filter captures pet dander – these flecks can cause discomfort indoors. Ideal for homes with pets.

Removes Plant pollen. Captures all kinds of plant pollen, traps them in filters. Pollen enters indoors through ventilators, windows and people.

All types of smoke removed. Saves your lungs from cigarette, kitchen, fireplace and wildfire smoke.

Captures mold and fungus spores. These particles trigger skin irritation and other forms of allergy.

Dual filtration system traps allergens. Traps microscopic, small and large particles of allergens instantly.

Runs quietly – whisper quite operation on most speed levels.

Carbon pre-filter can be washed. Washing prolongs lifespan and effectiveness.

Easy to replace filters – hepa and pre-filter are simple to take out. No technicalities required in removal and replacement.

Detects automatically airborne particles and then adjusts to eliminate harmful allergens, dust, pollen, smoke, germs etc

Sleep mode – quiet operation with 8 hours preset timer. Automatically goes off after set time for a restful sleep.

Uses maximum 110 watts at the highest Turbo speed mode. Wattage is lesser at lower speed levels

Energy star certified – will save you from paying huge bills as it conserves energy when used 27/7.

Features some controls and modes that determine its functionality. Has sleep mode, child lock, Auto timer, electronic soft touch control and Auto mode.

Replacement indicator lights – starts to light up at the top of the device once it is time to replace the filter. Easy to see the reminder.

Has been certified by energy star. Meets the standard of energy consumption and saves much energy as it cleans.

Removes 99.97% of allergy causing particles as small as 0.3 microns. Lessens the chances of asthmatic attacks.

Hepa filter can be replaced annually. The pre-filters should be replaced every 3 months. However, this depends on air quality and usage.

Child safety lock – allows you to lock the control panel immediately when your ideal settings have been chosen great for homes with children and pets.

Ozone free – no V or ions. Allows you breathe in safe air.

Contemporary design – easily fits in any room sized home or office. Blends well with most interior decor

20.6 x 10 x 24.1 inches

20.4 pounds