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The AD 1000 model covers 235 sq. ft. 5x/hour and 589 sq. ft. 2x/hour.
Features 3-stage filtration
STAGE 1: Pre-filter for larger contaminants like dust and animal hair; can be vacuumed or hand-washed to be reused
STAGE 2: Carbon/Gas Trap/VOC filter that combines two types of media – activated carbon (0.6 lbs) to remove odors and gases (e.g., smoke) and potassium permanganate to deactivate certain volatile organic compounds (VOCs) like formaldehyde
STAGE 3: UltraHEPA filter that removes 100% of airborne particles at 0.003 microns (as compared to “ordinary” HEPA systems that remove 99.97% of particles down to 0.3 microns, Austin Air filters out 95% of particles 0.1 microns and larger.)
The UltraHEPA should be effective at filtering ultrafine particles such as mycotoxins and viruses (COVID-19).
Uses a WhisperJet fan that is potentially 30% quieter than the fans in other air purifiers
Captures mold spores but does not eliminate mold (to eliminate mold, its sources should be professionally remediated)
Warranty: 1 year
Return policy: 30-day full refund
Filter replacement: both Carbon and UltraHEPA filter – every 6 months
The California Air Resources Board categorizes Air Doctor 1000 as an “electronic” air cleaner meaning that it may be capable of generating small amounts of potentially harmful ozone. But it has been tested and found to produce an ozone emission concentration of less than 0.05 parts per million.
Therefore, I don’t recommend using the ionizing setting in this model to avoid ozone emissions.