Hi all, This is a first post for me and hopefully I'm pulling this off correctly with attaching the pictures. Wanted to get some feedback on a recent hot water installed by a professional plumber. Previously I had an old 80 gallon hot water heater in place (taller), and there was no expansion tank. I asked for a 50 gallon heater since we just no longer need anything so big as that 80-gallon. Was kinda surprised that they did not go with a tall heater. And I was even more surprised to see that they did not use copper to complete the connection. What are your thoughts on this installation? Is this something that should be expected? Or would I be justified in being less than satisfied with this install? Thanks in advance!