Hot water venting into cold water tank
Hello,
I posted my query here a while back but unfortunately it appears to have been left to fester :confused: (query was hot water from cold water tap). After a couple more visits by a plumber, his view is that the hot water tank is overheating, venting hot water into the cold water tank at the top of the house and this is causing our cold water to run hot. Do you think this is possible ? Do hot water tanks have a thermostat that could overheat ? Could this be caused by an overactive immersion heater that appears to be switched off ? Any thoughts welcome...