And, if you ever have to install a new HVAC, go with a company that offers 10/10/10 warranty (compressor, other parts, labor), and you will be good for that property for that long. 

This will be pricey in the end because you are slowly killing the compressor as home AC does is supposed to be a sealed system.

Due to the properties we target, construction, and our process for selecting properties, our average maintenance cost is between $300 and $400 per year, plus an occasional water heater or AC compressor replacement.

It would also be a selling point for someone with 240v tools or air compressor. 

hey man, I can really do you good, could you give me a $20.00 for some gas and some smokes"." my truck has a flat and could you cover me a extra $50.00 for a new used tire"" my compressor got stolen, could you spot me a $100.00 so  I  can get a used one at the pond shop".

Beware of splits you usually need one compressor(sorry if that is not the right word for it) per unit, in CA they won't let you share compressors between multiple units(at least in my regions).

Repair company said it needs a new compressor. 

The most expensive part of adding forced air to a house without it is the duct work, followed by the actual air handler and compressor. 

Old unit or burnt compressor?

See if outsiders compressor coils are dirty.