Water heater hook up/dielectric unions
When I moved into this house the hot water heater (3 years old now, gas unit) was hooked up to the existing system with copper fittings. The whole house has copper supply lines.
1. Should I put dielectric fittings between the hot water heater and the copper lines? I know the dissimilar metals will cause the metals to corode faster.
2. Can I use brass fittings between the hot water tank and the copper pipes instead of the dielectric unions?
Water heater hook up/dielectric unions
Hey Tommy,
You don't have to change a thing. We pipe all our new construction water heaters copper to copper and haven't got the first complaint of electrolysis yet.
Unless you have a faulty electric system it won't happen. Regards, Tom
Water heater hook up/dielectric unions
We come out of the heater with 3/4" copper male adapters and go from there with copper. Hence, copper to copper. If this set up disturbs you come out of the heater with 3/4" brass short nipples and convert to copper with 3/4" female adapters. Dielectric unions should not be necessary. Good luck, Tom