Making sure vents are Not closed near the air handler which can lead to ice forming on condenser and unit running continuously.Most of my units are in Condos so I look for the price difference between Seer models, and air handler\outside A\C quietness also. 

I hope the insulation doesn't have a paper backing (vapor barrier) on one side otherwise this will cause a condensation problem. 

But when your tenants move as often as these folks do and walk away from their security deposits your left with turn over after turn over and very high maintenance costs along with getting your condensers stolen or your house stripped when its vacant a week or so.

The interesting thing about the service is they use algos that condense all inventory into a handful of singular listings that represent inventory (so a listing for a 1bed, 1bed king, 2 bed, etc) -- then spoon out the reservations from that. 

too much scrolling, I vote for condensing it like it was previously.

@Steve Might  there may be other needs to break open the slab besides drains and water supply lines.Underground electric runs to a kitchen island for example...unless you want to add an ugly drop from the ceiling.When putting in new central air conditioning (previously window units) you need to have a condensate line out. 

Julia Rowling its SOP  (standard operating procedures) to not put any appliance's in these homes until the tenant moves in.. same with HVAC some times  condenser unit water heater etc etc.If you install them new and leave them for any length of time they will get stolen nearly 100% of the  time... this is why I have said many times that these types of investments just are not appropriate for anyone who does not do this for a living...

Refrigerators will usually last if the landlord does a little maintenance on them and keep the condenser coils clean, they are now under the machine, rather than on the back, so they get all the crap off the floor on them.

It could be a lack of proper air flow around the coils, the condensate not draining away properly or draining too slow, the refrigerant could be too low or leaking, the air filter could be clogged, a damaged or broken fan, etc.

I ended up crawling around under the building to run a condensate line (he didn't know about heat pump water heaters) and there was racoon poop everywhere and my borrowed headlamp went out and I was at the property for 4 hours and and and...