One of two air conditioner units went out in the house I am renting. Of course, it's the one that cools the bedrooms upstairs. Had to spend $70 on fans to try to cool the rooms down until the a/c unit gets fixed. Called the problem into the property manager and was told they would "get right on it tomorrow". Don't know if that means they will make calls tomorrow, or someone will be out tomorrow, and was so beat from work that I didn't think to ask. Is there a time frame in which they are required to fix this problem? This is not the only problem I am having with this house... the refrigerator has never worked properly. It keeps freezing food on some shelves and they have sent someone out a few times, but I still have this problem. Are these issues enough to break the lease? Sorry for the multiple questions, I am just so frustrated.

Unless your lease spells out time frames for fixing things, the AC and the fridge not cooling evenly are not grounds for breaking the lease, sorry. Tenant law varies by state, and many states have code that covers heat, but I don't know of any that cover air conditioning. Some landlords require that all complaints be in writing too, so check your lease, or just do it after a phone call for the paper trail.

There is a doctrine of habitability. A landlord is required to provide a habitable premises. I don't see anything that doesn't make the unit inhabitable.

When did you call the property manager? If you called late in the day it may have been too late to do something about it that day.

...the refrigerator has never worked properly. It keeps freezing food on some shelves ...

That's probably just a matter of turning down the dial in the fridge. Doesn't require the landlord to come and "fix" it any more than if the TV is unplugged (You would just plug it back in, right?)