Arny Krueger wrote:

"murph" wrote in message

In article ,
"Arny Krueger" wrote:

I live in Nashville. Been in this house for 14 year & 3 gas water
heaters. Replaced the original a few years after we moved in. Home
Depot, don't remember the brand. 5 year warranty. Kept the receipt
in warranty folder. 4 years, 2 mos. later it fails.
HD replaces it w/GE 40 gal. Replaced it once after 3 years & am
getting ready to do so again.

Do you have a dielectric coupling in the system?


Copper back to water meter. The only thing between meter & heater are
the 2 whole house filters I mentioned. The housings are PVC. One
"paper" sediment filter & one carbon activated filter for chlorine.

The filter bodies are good dielectric isolators, but they are supposed to be
used only on the cold side of the water heater.

You might want to put a dielectric isolator into the piping on the hot side
of the heater.

Heating water in the USA sounds *astonishingly* complicated !


Graham