I believe one or more of your single handle faucets is leaking internally
from the hot line into the cold line. This can allow a thermosiphon back
into the cold water system or flow of hot water thru the valve whenever
another cold water faucet is opened to create a pressure differential. This
is not too uncommon and can be detected fairly easily if you have access to
feel the lines near the leaking faucet(s). Replacement of faucet internals
may fix the leak. Also carefully check the internals for improper parts or
assembly.
Don Young ) (Remove numbers to reply)
"TigerPaw40" wrote in message
...
Here is some more info, the water heater is a 50 gal gas heater. There
does not
seem to be and type of pump or loop. The water in the basement, and the
1st
floor kitchen and bath do not get the instant hot water like the 2 baths
upstairs. I have checked very carefully for any leaks and have found none.
In
the 2 showers upstairs they have the type of faucets that are combo, in
that
you just adjust one knob, so they get very hot water all at once, may take
2-3
min before enough cold water is mixed to allow you to enter the shower.
Our
children are older now 13-22 yrs so its not that big of a concern, if I
had
younger children i would be more concerned about this. It just seems odd
to me,
and would like to figure out why this is.
Don