Hi ryan , I bought one at the nehu show in dec , and i,ve found out since using it my breathing a lot easier when entering and leaving the loft , although I was getting a bit chesty before I bought it ,I consulted my Dr and he said he would refer me to a specialist , since i,ve been using it ,I can say there is a big improvement in my breathing when i,m in the loft and when i,ve vacated the loft ,before I was bringing up flem big time and feeling unwell after ,it is basically a small ioniser and breaks up pollutants and bacteria , my Dr is quite happy with the improvement to my chest now and i,m happy