DiskDoctr wrote:
Do a quick search for accumulator or expansion tank on this site and you'll read about similar issues and the solution (hint, accumulator)
The air sputtering can be low water in tank, pickup tube not on bottom of tank, h/w tank has air in it, leaks, outside shower head, etc.
Thanks. I'll search on that.
Water tank is full, HW tank was purged, no outside shower head. I guess I could have a leak somewhere. It's an old rig so the plumbing isn't terribly complicated. With the faucets off, the pump will build pressure and shut off, so I don't think there are leaks.