Well I get a call from the 2nd Floor Tenant again today - " The water
is surging hot/cold (I don't get the exact behavior but get the gist of

the problem) still inside the shower" I believe the hot water gets too
hot and burns the showeree or it gets too cold one or the other.


Be helpful to know which, don't you think?

Is it just the shower, or does the tub spout
do the same thing? Which thing? Stick
your arm in for 6 minutes and find out.