Since my father and I suffer from allergies, we bought two AirTamer air purifiers in May of this year. Before using this air purifier, I was coughing every day because of dust, plants and flowers. After daily use I stopped coughing. Two weeks ago I had itchy throat again and started coughing. I found that the brush got shorter. So I ordered new emitter caps. Now I don't cough at all. I would recommend replacing the emitter cap every four months if you use it daily. In the photo, the emitter cover on the right is old. You can see the brushes are half the length as usual. So it's time to order a new emitter cap. Finally, I am very grateful to Hayley and Kristin from AirTamer for helping me solve my shipping problem.
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