I’m 67 and when I had persistent coughing despite over-the-counter treatment I thought of the worst. I considered asbestosis, asthma, even worse problems. In the end, my daughter thought it might be the house because she herself was coughing more when she came to visit this fall. I found Joe through a friend and got myself a purifier and a duct cleaning that seem to have taken care of the problem. I recommend these people, they were nice and moved fast.