This actually helped me out recently when the condensate line got clogged in the HVAC closet and the water puddled and set off the water alarm.

The air condenser is in visually poor condition and my assumption is that it will need to be replaced in the coming years; however, it is currently working great.I'm currently leaning towards replacing the fence as it would create the most curb-appeal for potential renters. 

I'm not a huge fan of window units for security reasons & I commonly see window units installed incorrectly so they wont drain the condensation out well.  

I finally decided I will visit each door once a month to change filters, to check for leaks under each sink, to flush the water heater T&P valves, to exercise each shutoff valve inside, and to put bleach down the air con condensate line.My biggest stress came last month in dealing with hurricane Irma as it approach south Florida. 

The are handler needs to match up with the condenser.

When the condenser fails later on, you could simply have them flush the system and change the flow orifice of the evaporator when they change the condenser.

Depending on where the house is it is not uncommon to have some moisture in a raised foundation, as the temperature changes you may see some condensation, that is why there are usually some vents around the base of the foundation.

Yeah on mine I ended up just going with a traditional furnace and condenser setup because it wasn't much more than the mini split to do so. 

There could be condensation on the door.

Negotiated price down based on future renovations in two units (updating cabinets, floors, countertops, and condensers).