Some aspects of Aspergers behaviour there, Penny.
When you consider that Aspergers is considered to be the mild end of the Autism spectrum, and that no two people are alike, it would be bold to diagnose anyone unless you were a specialist, like Tony Attwood.

As for your water heater, I know about that one, having recently changed mine. A new cylinder with a fast-reaction (i.e.powerful) heater, and the thing sounds like a jumbo taking off. Wish I'd put some form of sound insulation between it and the wooden floor. The new cylinder is insulated with polystyrene beads instead of soundproofing felt like the old one. More heat efficient, but a lot less noise insulation.

Is this a 'body corporate' arguement?