You or your property manager shows up to the house on a Monday morning and you find that all the copper was stripped out of it over the weekend including the air conditioner.  

For my own comfort if I was in their situation I would buy my own window air conditioner unit today since nothing will be resolved over the upcoming weekend.

.: Insulation, or lack thereof.Just ran into this one and it really surprised me, but I guess the transition from floor fan to window air conditioner to central air were all upgrades to a better way of living and that pesky outer wall insulation was an expense that just didnt make any sense back then.Energy efficiency???

There are only windows in the front and back of the property, not sides.I calculated that in the summer months if each room has a 5000 BTU air conditioner that would cost about 50 bucks per month per room.

Like everyone else on this planet, we've had thefts on jobs and in at our own properties where thieves took the stoves, refrigerators, dishwashers, built-in microwave ovens, washers, air conditioner condensers and had walls ripped open for the copper pipes and copper wires.

Thanks,Ana @Ana VhanWe own 40 air conditioners between all our properties.   

The air conditioner manufacturers are going the way of the automotive company's so you have to use their parts on newer equipment coming out.

Sound penetrates with doors and windows closed and new air conditioner on.

For example, if the HVAC is now one system, what happens with the cost of replacing the outside air conditioner unit but not the entire system (same furnace, blower, vents, etc.)?  

The condo has a refrigerator, electric stove, and window air conditioner.