We have had ours for over 2 weeks now and very impressed so far .
In our flat the air is good when the light is green, amber for air is not great and red for air is bad.
We had windows open over weekend, went red every time a moped went past (we live in a ground floor flat opposite a moped bay)
Also I was cleaning yesterday, changed colour when I sprayed the products.
I suffer with sneezing fits – i haven’t had one since we installed the purifier. My husband suffers with hay fever – so far so good.
It also cools the room down immensely – as cold as air con when its on top mode. The lounge smells so much fresher too.
I’m really happy with it, it seems to be making a difference – cant comment on filter life yet but would definitely recommend.