There is a chance that there is a thermosiphon loop in the hot water system.


"TigerPaw40" wrote in message
...
Moved into a 1978 built two story home. The weird thing is we get instant
hot
water upstairs in both bathrooms. In all the homes I have lived in you
would
have to run the water a bit to get hot water. In this house the water is
very
hot instantly. Is this something that was designed in the home, or could I
have
some type of plumbing problem?