We have had 1 for about 3 weeks which was placed in our bedroom. It definitely has helped with my wife's allergies and cut down on the amount of dust in there. The second just showed up today and was placed in the kitchen where we kennel our 3 dogs. Hopefully it helps with their smell. So far I'm impressed with the one in our bedroom hopefully I'll get the same results from the one in our kitchen.

Only have one going right now. Spacing out the use of them due the filter costs. ?? It does run really quite on low speed. We have it set on Auto. It is funny how it determines when to kick into higher speed out of the blue.

Nothing changes in the house around its surroundings.

No outside doors have open, no heater comes on to change the air inside. Right now, I have a head cold, so I hope it is helping cleaning the air. I do like it so far.

I purchased the bundle with the large and mini and really love them. The mini is super quiet in the bedroom and move that it has three settings to tell you what type of air quality issue it’s detecting. It turns yellow periodically when I blow dry my hair as we have an en-suite bathroom so I know it’s working. We have the large one in the family room and feel it’s helping with the air quality especially since we have wood burning fireplace. I will say those who note they will never dust again either neither had dust to begin with, don’t have dogs, never open windows, doors, etc I’d live in such a sanitary place these can eliminate all dust. I cannot say for sure that it hasn’t reduced the dust, but I most definitely still have dust on my bedside tables and dressers I dust regularly. I didn’t but these for that purpose, but want to ensure others don’t buy thinking this is the miracle we all have been looking for to fully eliminate all dusting from our lives 🙃. I haven’t received my filters yet but only had for a month as of this week so will be interesting to see the filter when time to change a they haven’t been tuned off since they arrived. Loved them so much I bought another mini bundle to give as gifts this Xmas. Quality product.