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The GermGuardian is a HEPA air purifier with an activated carbon pre-filter, an optional UV-C bulb and a PM 2.5 sensor that adjusts fan speed automatically. It cleans a 153 sq ft room about every 12.5 minutes and a 743 sq ft room about once an hour, so it suits bedrooms, offices and open living areas. The carbon pre-filter targets odors from smoke, cooking and pets, which many HEPA-only rivals leave behind. The UV-C stage is the main dividing point: some owners value it, others see it as an extra bulb to replace.
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Owners generally report cleaner-feeling air and fewer odors, especially from pets and smoke, and like the automatic mode. Complaints center on filter and bulb replacement costs and on noise at the top speed.
This air purifier uses a Genuine HEPA PURE filter that captures 99.97% of particles as small as 0.1 microns. It traps dust, pollen, germs and pet dander. An activated carbon pre-filter catches dust, pet hair and other large particles. It also absorbs volatile organic compounds to reduce odors from cigarette smoke, wildfire smoke, cooking and pets, and it helps extend the life of the HEPA filter.
An optional UV-C light uses a 5 watt quartz glass bulb to help reduce airborne germs, bacteria and mold spores. A PM 2.5 sensor measures the room air quality 60 times per minute. In auto mode, the purifier raises its speed when it detects poor air and returns to a lower speed once the air is clean.
It filters the air in a 153 sq. ft. room every 12.5 minutes, or in a 743 sq. ft. room every 60 minutes. Auto mode and 3 speed settings are available, and the lowest setting works as a sleep mode for quiet nights.
