vacuum noise and outside pipes
I also would not suggest putting the vacuum in a detached garage, it would be much more work to run the pipes under ground. Central vacuums these days are not that loud, I have 7 of them throughout my apartment, I use them as very powerful canister vacuums by attaching the hose directly to them, it's awesome. There are mufflers you can attach to the exhaust port to cut down on the noise.
Mike
I also would not suggest putting the vacuum in a detached garage, it would be much more work to run the pipes under ground. Central vacuums these days are not that loud, I have 7 of them throughout my apartment, I use them as very powerful canister vacuums by attaching the hose directly to them, it's awesome. There are mufflers you can attach to the exhaust port to cut down on the noise.
Mike