I dread the day when I have to replace either my HW tank or my muffler. Next to the HW I have a big negative bus bar, PEX HW plumbing, a HW temperature regulator valve and my Echo charger. Under the head sink, I have a big Racor turbine fuel filter, PEX hot water plumbing, and on the door, Balmer voltage regulator, and Marine Elegance toilet brain control box. Yikes! Nightmare!