I moved to a new apartment and noticed my roommates would turn the main floor into a freezer (I live on second floor). I noticed thermostat levels as low as 50

I moved to a new apartment and noticed my roommates would turn the main floor into a freezer (I live on second floor). I noticed thermostat levels as low as 50 F. A few days later the HVAC stopped working and what do we know, it's because of of ice buildup. The other thing, the vent-ways are designed so my room on second floor has a floor-vent. This works for heating but not for cooling. The cool air that comes out of the vent stays in the region between the floor level and roughly 1 foot above it. So my feet are fine, but I'm otherwise feeling hot. It's a straightforward solution that cooling-vent should be in the ceiling and heating vent on the floor. But it costs more to have this kind of installation that's why most landlords/home-owners don't go for it? I don't know.