PRRronbh posted:Then why did MTH replace this 165VA unit with a new 180VA unit on the spot?????????
IDK, call and ask them! I didn't replace mine and it (still) works great. I can still easily find many of these first run 165va Z4000s online that obviously haven't been replaced. If you have one with problems, MTH service can be reached at (401) 381-2580.