April 14, 201412 yr I've been looking at new electric shower units. Some brands have copper heat exchangers and some have plastic heat exchangers. Does anyone have any views/experience of the relative merits of plastic vs. copper ?
April 14, 201412 yr Author Before anyone points it out, I do mean plastic or copper heat exchanger body, not the actual heat exchanger inside...lol
April 27, 201412 yr I have a 12.500 BTU water heater that could be 18,000 BTU if I had 3 phase electric. It has a plastic bodied heating element and puts out some superhot water. I didn't buy it for hot just volume.
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