Home › Forums › Public Forums › General Plumbing › waterheater pops › Reply To: waterheater pops
21 Dec 2000 at 3:47 pm
#289352
fourth year
Participant
It is popping because there are rust or calcium nodes on the flue pipe through the heater. Water gets into the node and the heat from the exhaust gases turns them to steam. The bang is the steam changing back to water when pressure forces it out of the node. Vinegr will not cure it and anything stronger may damage the tank or you.