Reply To: Unusual Corrosion Problem with Water Heater and Fittings

The Tank Unusual Corrosion Problem with Water Heater and Fittings Reply To: Unusual Corrosion Problem with Water Heater and Fittings

#23016
Larry Weingarten
Participant

Hello: I may be able to get you closer to an answer, though it would be nice to see some photos of the plumbing by the tank. Firstly, softening makes water more conductive, speeding up chemical and corrosion processes. Also, every 20 degree F rise in temp roughly doubles the speed of chemical (corrosion) processes. The problems you mentioned are where heat from the tank will come into play. I’d try to adjust the softener to leave 60 to 120 parts per million of calcium/magnesium hardness in the water. Over-softened water is hard on metals. Next, depending on the position of the brass PEX fittings, they may be replaceable with plastic fittings (like Uponor makes), to avoid the corrosion. As for the stainless tank corroding; make sure it is a low carbon, type 316 stainless steel or another type of stainless that holds up to heat and salt. You don’t want type 304! A question: Do you have a recirc line on the water heater? 😉

Yours, Larry

Water Heater Rescue

You cannot copy content of this page