We warrant to replace the defective product if requested within (14) fourteen days from the date of the original purchase and to repair the defective product for free within a one (1) year period from the date of the original purchase. Customer must show receipt. The transportation cost to/from our service center will be paid by the customer. *Replacement or warranty repair of the defective product will be void in the following cases: -Defects or damages caused by external impact or drop. -Defects caused by failure to comply with the instructions specified in the instruction manual. -If filter was soaked by water after opening the box. -Defects of the product passed more than one year form the date of purchase. Please call for RMA authorization number.