Thermostat is all the way up but apartment is still freezing. Help?

It's all fixed now thank you everyone! The temperatures for the next week are a lot higher thankfully so we'll be a lot warmer!

It feels like 7 degrees here and the past few days it's gone down to feeling like -16. I've had the thermostat as high as it'll go but it's freezing in here. The night it was -16 we were all warmer than we are now and it's 23 degrees warmer than it was. I can't do anything to the insulation but could something be wrong with the heaters?

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robb65 · 56-60, M

Is it blowing or not? Is the air blowing warm but not making a difference, or is the air blowing out cold? Is it a gas (or oil) fired furnace or electric, or a heat pump with gas or electric backup?
Heat pumps don't work well when the temps are really low and should have a backup of some sort. Years ago in the south it wasn't that unusual to find heat pumps installed without a backup, the colder it was outside the less efficient they were. A heat pump without a backup could explain it. It's possible something could be wrong with the backup.

Reading the details again it sounds like something that was working a few days ago isn't working now. Check all the breakers, check that the furnace is actually burning (assuming it is something other than electric). I'm thinking there may be a separate breaker other than the one for the blower. You could get lucky and find the problem.

SlytherinFreak · 26-30, F

@robb65 it's working now someone told me that it was probably working too hard since I had the heat up so high that it wasn't actually working so I turned it down and it started heating up. Luckily today it's in the 40's