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Master Plumber, I need your help. We recently installed a very expensive (and supposedly very efficient) Viessman hot water system boiler in our house. (It is the large one, not the wall one). The problem is that while the lower floors are warm, too warm actually, the upper floors are at least 7 degrees cooler. And while it is true that we have skylights on the top floor, they are in the hall, and not the bedrooms, where we have the radiators. Even when we keep the doors closed the rooms are too cold. (there is no heat source in the hall)I have had my plumber (who I do not have total confidence in as he was not familiar with the system) bleed the radiators of air, and that helped a bit. The contractor seems to think this difference in temperature is normal. But is it? I had a Veissman specialist come to check that it was installed correctly, but that was before the weather got cold. An engineer designed the system but I am wondering why there is no heat source in the halls. Should there be? I would appreciate you insights. And, do you work on these type of systems?
Thanks.