The fact is if you don't get it, you have to tote a regular vac with you. They are huge compared to the in wall space that the central vac takes. I love ours. The hose reaches everywhere. And like someone said by the time you get the total on the coach, you don't end up paying for it.
YOU CAN NEGOTIATE![ Remember they want to sell you a 5th wheel
and if they think you are not going to take it
because of the central vac,
they
WILL throw that in!