Has anyone used this type of hardware for their equipment? It's about 1/3rd the price of copper and brass...Zurn PEX at Lowe's: 3/4" Barb x 1/2" MPT Brass Male Adapter
I replumbed with Wirsbo PEX, which is rated to 170F (some only to 150). I'd love to use it too, but it shouldn't be used for anything other than putting water in to the HLT.
It is a joy to work with though. I was really sad when I finished plumbing.