This vent involves what's coming through the vents. Namely, air that's not warm enough. We're burning vast amounts of gas to heat the building, and yet most spaces in it have been running four to six degrees below the set temperature. We're trying to get our service techs from the state capital down to check the system out, but no luck so far. And probably not in the next few days, since we have winter storm conditions that will make travel difficult across much of the state.
When our building was built two decades ago, the architects sold the Board of Trustees a bill of goods in the form of a high-tech, computer-controlled HVAC system that was supposed to be able to fine-tune temperatures all over the building. The building is divided into multiple zones, each of which has its own variable air volume box. The air handler unit supplies the whole building with air at a given temperature. The VAV boxes each have chilled water and hot water lines so that they can warm up or cool down the air going into that section to fine-tune the temperature. It's a grotesquely inefficient system--we have to run the boiler all summer long to warm up sections of the building that keep getting over-cooled by the chiller! And in recent "winters" we've had multiple periods where we needed the chiller on to COOL the building, and it usually won't kick on.
Anyway, this system has never worked very well. Most people feel too cool winter and summer alike, except when the chiller is on the blink, which happens multiple times a year. The expensive computerized system gets on the blink now and then as well. When it does work, I've found that tinkering with the settings seldom helps much. Things have generally gotten worse in the past year or so. We've spent a fortune in service call-outs, and nothing seems to stay fixed.
Yesterday I checked the VAV settings for the circulation desk area, where the staff sits shivering in temps well below the set point. It said that the hot water valve was at 100%, and yet the air coming through the VAV box was not warming up. So evidently that valve has gone bad. I suspect there are probably others around the building. When we can eventually get service techs here to look at it, we'll probably have to have them go over the whole system with a fine-tooth comb to see whether all the parts and sensors are actually working. That'll cost a fortune. And I hate to think what fixing all the busted valves and sensors will cost.