Window air conditioners could be an alternative.  

Sadly, we are 2-weeks behind on our renovation (#1 above) due primarily to scope creep ... we had to replace 28' of external wall: 12' due to rot from a leaky penetration for a though wall air conditioner; another 16' due to improper framing when the unit was first converted from a garage/workshop into an apartment {long before we bought the building}.  

Same air conditioner she'd been listening to for a year.  

Between tenants you will have a much higher risk of your property being broken into, having your air conditioner stolen, having a door kicked in to steal appliances etc. 7.

Mainly that snake, screwdrivers to remove dead air conditioners, replacing fluorescent lights and that kind of thing. 

What will probably happen, as it did for me, is they will start seeing things that need to be fixed - as they start thinking in terms of "At this new rent amount, shouldn't I have better.....fill in the blank....floors, microwave, air conditioner, whatever."

It's hot in the apartment and the air conditioner is too loud, so we wanted to open the window and can't figure out how to open it.""

The main thing we need to fix is the air conditioner unit.

If an Air Conditioner runs nonstop because It can't reach temperature even if it's brand new, yes it can freeze up.

An example: we had a young couple who were undergrad students, and we went in there one day to fix something, and found the air conditioner and the heater both running, like mad, each trying to outdo the other.