This is the purifier I used for my son's bedroom (hence the crayon marks!) as he used to cough a lot so we worried about the air quality. happy to say he has grown out of it and doesn't cough anymore, so looking for a new home for this. It removes PM2.5 particles from the air and provides a live readout on the display, so you can monitor it. it is very quiet - doesn't make a noise hardly on the lowest setting and if it detects a high reading it will ramp up and down automatically. The filters are readily available online and the product is still manufactured. It has some crayon marks from when it was used in a kid's bedroom - so ideal for a child's room!
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