Hi,
I bought my typhoon fan with 2 filters inc from Tanning Professionals (spraytansupermarket) approx 4 yrs ago. Its as good as the day I bought it, easy to clean and rotate the filters still both great working order. You simply clean the filters under running tap and leave to dry for half hour. Its not too loud I talk over it fine even with a face mask on! I quite often do 15 /20 tans in one session sometimes more, (a Thursday evening for example), I then wash filter out after this amount of use and use spare filter, although I know you can use it for more tans. But I just like to keep on top of cleanliness!! Its placed inside a tent permanantley im not mobile.
Highly recommend this fan, not sure on price these days, but take a look at Nouvatans site Im pretty sure the same extractor is cheaper! Personally I would never tan without an extractor, for the sake of my health, overspray and how professional it looks.