I need some help with the ambient air cleaner I just got. Picked up the Delta 3-speed model for $99, floor model, so it didn't have a manual. I'll call Delta on Monday and have them send me one. (I hope).
Anyway, to my questions:
1. How much life do you get out of the filters, particularly the inner three bag filter?
2. Is the electrostatic filter worth the $50 they want for it?