Скачать или смотреть Honest Review of AIRDOCTOR AD3500 Air Purifier

AIRDOCTOR AD3500 Air Purifier
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Any unit with a fan will always have some sort of a humming sound-that is just how fans sound like. But I guarantee that this unit is a lot more quiet in comparison to other air purifiers when set on low or in auto when the air is clean. Another good thing about this product is when set to auto, the machine readjusts the cleaning power to clear up the air and goes back to low when everything is cleaned-not only that, it notifies you the quality of air you have indoor by the color changing design. The carbon and the hepa filters are disposable - depending on usage, the machine will tell you when to replace but for normal use, the carbon filter is advisable to be replace once every 6 months and the hepa once a year and /enjoy the rest of the days that you are breathing the cleanest of air. The unit works best when windows are closed. The smell of fresh crisp air is so noticeable after being outside for awhile and that is where I know it works.