I am use this air purifier last six month but I am not more happy by this air purifier because it is not give better air purifier many peoples are unhappy by the air purifier and it is take more electricity but not give better response today this company is not give return policy so I am not happy by this company service and its price in the market is very high compared to other air purifier available in the market so I am never again purchase this air purifier this company is not good make better product and I am not feel comfortable to handling this air purifier so I am never again purchase this I think it is totally waste of money and time on this air purifier so thank you