The motor (engine) is in the garage. Every room is connected with this by a tube! That is the reason why you can only install this system in a NEW house. The advantage of this system that you don't have to drag a vacuumer all around your house, to every place where you want to vacuum! The only thing you have to do is carry a light weight hose, and connect it to a lid in the wall; there are 3 lids in every room. So you can reach every possible corner of your house!! VERY handy!! AND very good for someone with a painful back!!

Oh my, I hope you understand the system; my English seems to be insufficient here....