My Dyson AM07 fan only cost me 350 hard-earned £££ and developed black exhaust-like marks where the air is forced out of the loop despite very little use in a room regularly cleaned with one of their V6 vacuum cleaners and after submitting photos to Dyson I was informed that "this is unusual but don't worry about it". Won't be buying Dyson products again if this is their attitude when they sell you faulty products and I suggest you don't buy from them as they don't respect customer loyalty! It's your loss Dyson as I was going to buy my girlfriend the V10!