Tempering Tank

[Alfa]

There is a copper tank in my wood-heated basement that tempers the very cold well water before it enters the hot water heater tank. It has developed a pin-hole leak. Is it worth replacing, or should i just by-pass it, letting the oil boiler do all the heating? If replacing, what should I use for a new tank? I live in central Massachusetts.

 

[Sylvan]

Copper can be easily brazed (no flux needed) or Soldered with silver bearing alloy . Do not use solder containing lead