This Powerful PRO Air Purifier Console moves an impressive amount of air， circulating the air 1x per hour in 4，050 sq. ft. and 4x per hour in 837 sq. ft rooms making it ideal for extra-large spaces. The pro is equipped with 3-layer combination filter. The 2 washable pre-filter screens are the first layer of filtration and captures large dust particles， pet dander and hair. The second layer of filtration are the 2 premium quality granulated charcoal filters that attacks foul odors， smoke particles and VOCs， prevents the growth of bacteria， germs， and mold. The last and most impactful layer of the combination filter are the 2 HEPA filters that capture 99.97% of airborne allergens down to .3 microns， such as dust mites， small debris， mold spores， pollens， and pet dander. Features a touch control panel. Equipped with 5 fan speeds， real time air quality monitor， Auto Mode， Night Mode， Child Lock， and temperature display. The Air Quality Monitor detects the amount of particles in the air and displays the air rating on 3 color LED display. When in auto mode the GermGuardian reads air quality and automatically adjusts the fan speed. In night mode， the unit will run in library quiet low speed and the display lights will turn off. The Filter Replacement Indicator will let you know when it is time to replace your filter. It is recommended to replace your HEPA Filter every 6-8 months. Tested with Staphylococcus Albus， and Escherichia Coli， Aspergillus Niger， and Phi-X174.

Moves an impressive amount of air， circulating the air 1x per hour in 4，050 sq. ft. and 4x per hour in 837 sq. ft. rooms

Dual large combination filters consisting of: washable pre-filter， charcoal filter， and HEPA filter

2 large HEPA filters on both sides capture 99.97% of airborne allergens down to 0.3 microns such as dust mites， debris， mold spores， pollens and pet dander

Granulated honeycomb charcoal filter removes odor and smoke particles， prevents the growth of bacteria， germs and mold while the washable pre-filters captures large particles and extends the life of the filters

Optional ionizer emits negative ions that attract microscopic allergens to form larger particles that can be easily trapped by the HEPA filter

Clean Air Delivery Rate (CADR) of Smoke， Dust & Pollen. The higher the CADR numbers， the faster the unit cleans the air.

Sleep mode automatically uses library quiet operation while display lights turn off to help darken the room for sleeping

Filter replacement reminder lets you know when it's time to change the filter

Simple， electronic controls with 5 fan speeds

ENERGY STAR certified and CARB compliant