It took me a long time to comb through all air purifier options/companies. I am very happy with my purchase and have recommended the Alen purifiers to friends and family.
Well built. Definitely a quality product. My sleep has definitely improved. I purchased the Flex purifier with the carbon filter for our new recreational trailer. I have yet to place it in there. Wondering if I should purchase another one or move the one I have back and forth. Not such a bad dilema to have!