I have purchased the Pure Enrichment 4-in-1 True HEPA Air Purifier and started using it yesterday. It was very easy to set up and light enough for me to move it around. After turning it on, I immediately noticed a difference in the air quality. I work from home therefore I'm home most of the time and I love knowing that the air I am breathing in is safe and free of any dust particles/unwanted substances. I am extremely happy with my purchase and even bought the Pure Enrichment Portable Air Purifier as well.