Misadventures in HVAC

[Tobra]

Monday I get to the office and it is like 55* in there, vents blowing cold. Ran 3 space heaters and it became fairly comfortable by 3 PM. Repair guy is out the next day, still running electric space heayets to keep it above 60* with the same yesterday. Today it was not bad in the morning, becoming uncomfortably warm by afternoon, over 75*, checked the vent with the laser thermometer this afternoon, with the thermostat set to 70*

I wonder what it will be like in the morning