Hi Larry, Judging from what I've seen of other's installations,the vacuum ducts are housed in the walls, so I can't see you installing a central vacuum system without tearing out some walls, or, at least some sections of walls.
You also have to think about the type of flooring you have, as this will decide the type of hose you are dealing with. If you have only bare flooring, that being tile, parquet or hardwood, the electrical need isn't as great, as you will not need an attachment with a beater bar attached for carpeting. If you do have carpeting scattered throughout the house, or completely covering the flooring, then you're looking at a more powerful unit. What this essentially means is that along with the ducting needed, you will also have to run wiring along that ducting to power the system, while being controlled by the hose nozzle. Again, depending on whether you'll be attaching a carpet attachment to that nozzle, will depend on what kind of electrical requirements you get. Also, the power required will depend on the amount of floor space you'll have to cover with the ducting and wiring. This will all have to be covered by the technician, as the bigger the floor coverage you're looking for, the more power required by the unit to produce the sucking power to travel 100 feet, if your house is that long, let's say, to the end of the house, if the unit is located at the opposite end of the house. In any case, I don't think you'll be looking at a weekend project, and I do believe this would involve a major retrofit. Victor Gouveia
