I have one radiant zone in my house that runs to our sunroom. Whe had it put in about 3 years ago and the guy who installed it put a Taco 009 on it. I asked him today why such a big pump was needed and he said because radiant in-floor heat requires a much bigger pump because of the smaller pex and the amount of piping. The total length of the run, including what in the concrete, is about 250 feet. There is no vertical head. Does this sound right or is this way more pump than I need?
TIA, Pat
TIA, Pat