John:
- Yes, there's a version called the Mach Air 2 (I haven't actually seen it on sale anywhere yet, but I know it exists!), and that comes with exactly the same mini turbobrush which is supplied with many US Hoover models, as well as many UK Vax models. It also has an anti-bacterial HEPA filter.
- I'll get an answer about whether it's destined for the US as soon as I can. Since it's such a new model, it's likely that no decision has yet been made. I doubt very much that the soft brush-bar would be suited to thicker American carpets. In combination with such powerful, focussed suction, it works fine on lower-pile carpeting, but I can't see it getting deep enough into the nap of thicker carpets to really deep-clean them.
- I quite like the way it looks; I guess it comes down to personal taste! I don't think the hose is too vulnerable where it is: it never comes into contact with the floor, even with the cleaner flat to the ground. Since the cleaner is covered by a 6-year parts and labour guarantee, there shouldn't be any issue getting a replacement hose if it happens fail in that time!
- I find the noise perfectly tolerable - it's really not loud, or especially unpleasant, either. As I've been explaining to certain viewers of the videos of my Dyson fan, you can't accurately gauge sound levels through a video on your computer. There are too many variables: how close was the camera to the appliance? How loud do you have your speakers turned up? How much is the camera microphone focussing on certain frequencies to distinguish between relevant and ambient sound?
I'm glad you enjoyed the pictures and the video! I really do think it's a great little cleaner with unbeatable value for money. For £179.00, you get a heck of a lot in a very lightweight, compact, low profile package!
Kenneth:
I'm not 100% sure about the reason for the difference between the US Hoovers and UK Vax models when it comes to their cyclonic systems. Since the Hoover Platinum Collection bagless cleaners are multi-cyclonic, as well as cleaners like the Bissell Healthy Home, it seems it is possible to copy Dyson's Root Cyclone designs in the US. Maybe Hoover want to keep their most efficient system for their TOL range, and charge a premium cost for the added benefits? The lesser Hoover models use a copy of the Dyson Dual Cyclone design, which is better than filter-based bagless systems, but still not as efficient as multi-cyclonic systems.
Shown below is the latest incarnation of the Dyson Root Cyclone system, from my DC27. After the bulky debris, grit, fluff etc are separated by the outer cyclone, the airstream carries the finer dust through the shroud (the mesh section) and upwards through the central duct.
As you can see, the airstream is then split between 7 separate high-efficiency cyclones. These are tapered (ie. conical), and as the cones get narrower, the speed of the particles - and thus, the force exerted on them - is immensely multiplied, throwing the dirt from the airstream.
Meanwhile, the clean air is free to travel upwards through the vortex-finders and onto the pre-motor filter, which is there to ensure even the most microscopic particles are retained in the machine.
