I did a little searching already. Situation: There is an on demand hot water boiler with recirc lines and pump on aquastat (at the boiler) - professionally installed. Lines at boiler stay hot and cold like they should be. I believe the issue is one of the valves on a fixture is leaking the hot over to the cold side. There are no crossed pipes as hot is hot and cold is cold after running faucets for a bit.
I am going to test all of the sinks and the washing machine by shutting off the hot side and seeing what happens.
The showers are Symmons Oxford series (looks like these have temptrol guts?) and there is a Moen single handle kitchen faucet. The washing machine is a new high efficiency Electrolux. Bath sinks are all two handle.
Hot and cold seats in the two showers have already replaced with no change.
Are showers the most likely culprit? Is the cartridge the likely problem there?
Any other words of advice?
Thanks for a great forum.
I am going to test all of the sinks and the washing machine by shutting off the hot side and seeing what happens.
The showers are Symmons Oxford series (looks like these have temptrol guts?) and there is a Moen single handle kitchen faucet. The washing machine is a new high efficiency Electrolux. Bath sinks are all two handle.
Hot and cold seats in the two showers have already replaced with no change.
Are showers the most likely culprit? Is the cartridge the likely problem there?
Any other words of advice?
Thanks for a great forum.