A:AnswerFor me it's working perfectly cause everytime my wife finished to cook we turned it on and after like 30 or more minutes all the smell gone, the kitchen and the dining area become again breathable.
A:AnswerThis unit does not use a filter. You will need to replace a UV-C bulb and a TiO2 disc every 6-8 months. These items can be purchased together. The part number for the bulb and disc is EV9LBL. You can purchase this directly at www.guardiantechnologies.com or at most major online retailers.