My current hot water tank, presumably installed by a DIY former homeowner, has severe corrosion on the inlet tube and must be replaced due to a considerable leak.
Were I to DIY, how could I prevent this from happening again? Is several wraps of Teflon tape the usual method of installation, or should I use some kind of pipe dope? What will last the life of the tank or beyond?
On the new tank I imagine I'll use flexible hose on the inlet, which will have an O-ring. Will that be sufficient?
The outlet is in good shape and there's a pink wrap on the threads.
Best Answer
You need to use dielectric unions between the copper pipes and steel water heater. They prevent electric current from flowing through the metal, which prevents galvanic corrosion.