This Dr.Aeroguard SCPR200 is not a user friendly purifier.Iam buy this purifier last 2 months ago.The purifier is not working good because of the adjustment of the area and air is not purifie proparly. The cost is to high compare the other purifiers.This is not a handy product.This purifier is very heavy in weight and also long in height. This is not easy in moving to one plus to other places.The style and design is not good it is like a small pillor.This is not along durable purifier because of the purifier is not strong in physically and also technically. Iam calling to customer service to complaint the purifier is not purifie the air proparly they cannot respond. customer service is very poor. Iam not recomend this purufier to any one.This is non worthy for money.