"AZ Nomad" wrote in message

If may fix the problem. if you're using 150 degree hot water instead of
90 degree hot water, you'll need much less as it'll be greater dilutted
with cold water.

No, nothing is fixed. If one element is out it will take twice as long to
get to temperature and once you've diluted the high temperature, it is
going
to take longer to recover. It may be a temporary work-around, but it does
not fix something broken. Those thing usually come back to bite you in
the
ass at the worst times. There is no substitute for a proper repair.

You can't fathom that it might simply be the thermostat? It is worth
checking.

I can fathom that, but setting it up to 150 still does not fix it if broken.

If the thermostat is the problem it must be re-calibrated or replaced. For
a long time he was OK with the present setting. It no longer works. Why
can't you fathom that something changed and must be fixed properly to make
it work properly again? If it is set at 125 and the water is 90, something
is wrong. If it is set at 125 and the water is 150, something is wrong.
Using 150 degree water mixed with cold does not negate the fact that
wherever it was set at worked before and does not now.

Work arounds are not fixes. Duct tape may get you by, but it is not a weld
or a rivet. If one of the elements is broken, setting the temperature to 150
may compensate, but after the second element burns out, should he then set
the thermostat to 200?