Very carefully. Oil from your fingers will reduce the performance of the UV light, so always use gloves or touch only the light’s metal area. Unplug the unit and turn it upside down. Remove the base and filter, then slowly loosen the GREEN screw. Grasp the wire connectors just under he bulb housing and gently disconnect it by squeezing the side and top notches. Holding the bulb housing straight up SLOWLY slide the UV bulb out of the housing to keep rubber protectors in place. Slowly slide the new bulb into the housing to fit into the top and bottom rubber protectors without forcing. Grasp wire connectors from the purifier and bulb housing to connect by pushing together. Re-attach bulb housing by tightening the GREEN screw. Insert filter and reattach base cover. For more information, please read the Use & Care manual.
Head to the "Air Purification" section of our main menu, and look for "UV Bulbs" to find replacement bulbs.