I love central vacuums
I have several central vacuum units, several canister cleaners and several backpack vacuums. I like them all of course but I find that in most cases, I'm reaching for the central vacuum hose. I use all of my central vacuum units without pipes, attach a utility valve to the in-take if the unit does not have a valve built in, connect the hose and you have a very powerful hose cleaner. I have several dual motor units, some have the motors in series and some are in parallel, it's definitely more noticeable to have the motors in series because the suction at the end of the hose is increased, but for longer pipe runs, many people think that a parallel configuration is better since this provides more airflow. I think either configuration would probably work fine in most cases.
Mike
I have several central vacuum units, several canister cleaners and several backpack vacuums. I like them all of course but I find that in most cases, I'm reaching for the central vacuum hose. I use all of my central vacuum units without pipes, attach a utility valve to the in-take if the unit does not have a valve built in, connect the hose and you have a very powerful hose cleaner. I have several dual motor units, some have the motors in series and some are in parallel, it's definitely more noticeable to have the motors in series because the suction at the end of the hose is increased, but for longer pipe runs, many people think that a parallel configuration is better since this provides more airflow. I think either configuration would probably work fine in most cases.
Mike