The one piece of advice I can give is regarding the powerhead.
Go with the hoover windtunnel. We've had much more expensive ones and
cheaper ones. The Hoover windtunnel powerhead for central vacs is the best
in our experience. Be sure to buy the current model. It is significantly
better than the original put out 5 or so years ago but has the same model
number. In other words don't look for a used one on ebay. You can get it
delivered for $289 from vacdepot. We have a fancy European one that cost
almost double and sold it on ebay. It wasn't as good as the Hoover.
The original Nutones had lifetime warranty on motors. If you can find one
of those you are set for life. It includes labor I believe. Current model
is short warranty like everyone else. I have a Nutone with 2 fan motors and
it works great with a hoover head.
To the original question regarding installation, well it depends. On
new construction, it's relatively easy because you have open
access. If you're talking about adding central vac to a house, no
way I'd do it. While I have central vac and like it, it would be far
too difficult to retrofit and not worth the trouble.
Tend to agree with not having one at all.
Both our daughter's homes have central units and they have ended not
using them, preferring the convenience of regular canister or floor
sweeping vacuums for various reasons, such as ability to take vacuum
out to the car, better for sweeping up pet hair etc.
My idea might be to install one as a dust and sawdust remover for the
basement workshop. Also to put the unit where it can be emptied
outside the house.
Our personal opinions. Not mentioned as much these days by real estate
developers as a sales gimmick.
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