i have one in every room, no carpet in house, have a special filter on my furnace. a lot of things used to trigger my SOB so i try to make it as easy to breath as I can. what ever works for you and only you can judge that, we can tell you what works for us but every one is different. a lot trail and error.

Yes I do, and it really helps a lot I have 2 small dogs but they do shed a lot

I have what is called an Air Scrubber attached to my forced air unit and an air purifier in my bedroom...I have 2 golden retrievers and of course they sleep in my room..much needed and very helpful :)

When ours was working it made a big difference

I have been using an air purifier in the bedroom and it definitely seems to help my husband.