Yesterday I got a brand new heat pump. Long story short, it was messy at best. In particular, the copper sweating attached to the condenser unit seems problematic in a couple of ways. First, copper that has been out in the coastal salt air for 20-years was reused. I've had issues with that very line in the past as it took a lot of corrosion from the air. The second thing that is concerning is the seemingly incompatible pipes sweated together with a bunch of solder.
Is this a concerning item from the standpoint of having future issues with the system, or is it just little more than ugly?
