On Sun, 26 Feb 2006 16:15:44 GMT, "Edwin Pawlowski"
wrote:

Other factors are the incoming water temperature, the setting of the hot
water, size of tubing at the showers. They won't fix the problem, just
change the degree of it. You can't change the temperature the water comes
in from the street or well.

As you stated, setting of the hot water heater too high can cause some
of this, especially when flushing a toilet while someone is taking a
shower. If the temperature is set too high, it takes a lot more cold
water to make it comfortable for a shower. So when another cold water
faucet is turned on, the hot water immediately becomes too hot. Keep
the water heater down around 120F like they recommend.

Dick