I am a Southerner and do not have a lot of experience with boilers and steam heat or hot water heat, but recently I went to inspect a building for general operating issues--not HVAC--up north in a "cool" climate. (Not cool now, hotter than down south, but summers are short up there with long cold winters.
Even though it is summer, with temps in the 90's and even 100's, the boiler and its water loops are still on, and they are using reheat to temper the air.
I asked the tech why did they not turn the boiler loops off and/or stop circulating hot water throughout the building, and he said that would be bad. He said without circulating the water, the chemical treatment might not be dispersed properly and cause a lot of problems.
Since I am not a cold climate person and don't have any experience, I did not argue, but it goes against my energy efficiency gene to be reheating general office space. It is not like it was a Surgery Center, where reheating is common. Just general office space, with fairly low humidity, and inside temps also kept fairly low--between 69 and 72. But radiators on.
Is this standard procedure for buildings with boilers and hot water loops?
Or can we raise the chilled water setpoint a bit, turn off the boilers, and save some money?