This is very common for apartment buildings. Open a window!

Well that sucks!

Many dual HVAC systems are either heat or cool (not both). We just installed one in our rental.

When we lived in large apt buildings ISTR that certain months AC was available and certain months heat was available.

I live in a fourth (top) floor apartment. Recently, I started needing to use the heat and our system wasn't blowing out warm air when the heater was on, so I called the office and maintenance fixed it. The other day, when it got up to nearly 60 degrees, our apartment was super warm, due to being on the top floor. It was 80 degrees in here even with the AC set at 72. I called the office and let them know and they emailed me back that maintenance had switched our system over to heat and could switch it back to AC if I wanted. I have never heard of an HVAC system only being able to run AC or heat at once. Is this weird? I explained to the office manager that we are on the top floor, so if everyone else's heat is on, our apartment is stifling during the day, but if it's 30 (or lower) at night as it has been lately, we need to be able to run the heat as well. So far no answer but I am just confused- I have never lived anywhere, house or apartment, where the HVAC can't run air at some times and heat at others.