This is my first air purifier and have found it to be very effective. I was looking for something to test out in the kitchen when the oven fan didn’t handle extra fumes/smokes/etc - the first time making something the filter was about 8 feet away at the edge of the kitchen, it was a little smokey and saw the red indicator kick on detecting the extra particles.
                    This was exactly what I was looking for and the auto setting stayed on until the room cleared out.
                    I’ve also moved the filter into our bedroom to try and help with allergies at night, we might consider getting another one in the near future.
                    Overall very happy with this purchase.