It has been my pleasure to have met Rex Murphy of Air Purifiers and Cleaners via telephone. Rex is extremely knowledgeable and professional. For 45+ years I have painted for a living, I am a professional artist. Having developed an allergic reaction to the toxins in my paints and fearing my career was at it's end, I shared all this with Rex and he was all in to help me select and put the best equipment in my studio and home. He continues to supply what I need after many years and I am so grateful. Plus, my career is thriving! I also have 6 cats and the filters have made a huge difference. Thank you Rex, Vie Dunn-Harr