I remember when I first looked under the hood of a Lamborghini. It was a revelation. Every hose, every wire, every conduit was neatly contoured, fit, and in place, Nothing was bundled, wire-tied or laid wherever it fell. I began to understand why Lamborghinis were priced like a Lamborghini.
Airstreams may be priced relatively like a Lamborghini, but they are nowhere near built, fitted, or documented like a Lamborghini. Lots of space is wasted under couches, closets, bath showers, and the like. Heating ducts, water lines, drain pipes, electrical wire is strewn about wherever. Speaker wire and A/V lines are crammed in tight spaces with no labeling, and certainly not custom cut to fit.
It is an abomination of assembly. If any thought was given to access, you have to wonder what exactly they were thinking. It is appalling indeed.
When you find the pump after it fails, or leaks, or otherwise disappoints, you can replace it with a quality component that is quiet and better built, because AS most certainly has put in the cheapest component they could find.