A:Answer We're sorry to hear you're having trouble with your Shark - 3-in-1 Max Air Purifier, Heater & Fan. We’d like to do some troubleshooting steps with you in order to best resolve your issue. The troubleshooting can be completed by phone at 1-855-427-5125. Please have your Shark - 3-in-1 Max Air Purifier, Heater & Fan on hand at the time of your call. We are open Monday to Friday 9am - 9pm ET as well as Saturday 9am - 6pm ET.