Yes there has always been a larger expansion tank. WH was installed and that plumber installed a small one above it. New plumber said it was not needed at WH because I had one on water line already.
That makes a difference depending on where your check valve was installed if a check valve was downstream of the big expansion tank then the small one would still be needed. If this guy is a great plumber he probably can solve this easily .
Is the problem already fixed ? where are you currently with it?
Based on current info not having a tank at the water heater isnt causing your issue unless the tank was somehow grossly undersize. Dont know what" differance is minimal " would be refering to.
id say your main expansion tank needs testing
Based on current info not having a tank at the water heater isnt causing your issue unless the tank was somehow grossly undersize. Dont know what" differance is minimal " would be refering to.
id say your main expansion tank needs testing
I was looking at that and wondering the same thing. With spring water content of iron and sediment, guessing tank is 20 plus years old could be impacted.