My parents bought a new house with a somewhat old boiler, maybe 15-20 years. It is a forced hot water with radiators system with 4 zones/pumps. The basement is very hot. He's started putting insulation on all the pipes, but the temp has only dropped about 5 degrees. The flue is especially hot, I'm not sure if that is relevant.
There are some parts of the house that are still not heating well so we thought insulating all the copper would help.
There are some walls in the basement sectioned off but with all with open doors. The room w/ the boiler is the hottest, the next room is also very hot, about 80.
What's a normal temperature around the boiler?
Is there anything I can do, or anything to look for to determine if the system is operating correctly?
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