I bought Medklinn Asens +60 and one for the car too, Medklinn autoplus. When I sent them for servicing after using them for a year, I'm charged a minimum of RM150 for asens and RM105 for autoplus just for basic servicing. You better ask the sales person how much the company will charge you for servicing before you fork out money to buy any air purifier. I wished I hadn't bought them. Servicing them alone cost RM255 each year which is nearly 20% of their purchase price