Quote:
Originally Posted by DAVES
Hum there is that annoying ad on the radio where the lady is betting when a 15 year old water heater will fail. Copper plumbing under the house? I would expect you will find they need to break some holes through your cement. You likely have tiles ,etc. You may not be able to find matching tiles. It can easily turn into a monster. Our home is ten years old and I am fairly sure it is plastic. I would as a plumber. Our previous home was 48 years old. We had copper plumbing. At that time copper was the latest. Some people had galvanized steel/iron. The copper prevented pipes from being pugged with calcium. Like everything else things are not done as they used to be. With the cost of copper, I will bet copper plumbing is far thinner than it was 60 years ago.
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I'm fairly sure the OP was referring to the refrigerant line(s) fir the AC unit. These are copper and high pressure - joints are brazed (not soldered)