There are very few places that have R22 condensing units left and you may have to go into a full 410A replacement which isn't cheap.

I think in any climate you can have concerns with it being sealed up due to changing temperatures inside and out causing condensation, mold, etc.

All that time with no heat in the winter and no air conditioning or ventilation in summer can cause moisture to form in the structure due to condensation build up.

I'd like to get licensed as an agent in CT and I am seeking a condensed course to do so. 

So I take a look.Well, during these long months on the market the roof starts leaking, the a/c above the ceiling overflows condensate, the ceilings start falling, the wallboard gets all wet, mold grows, vandals break windows, and fire ants invade the interior walls (this is slab-built).

You might get the "condensed" reports, but I don't put much value in those, at least as far as tenant selection; you see, most tenant applicants these days have terrible credit, so I suspect the condensed reports will tend to come back bad ...

I got the inspection report back stating roof was approximately 8 years old (supposed to be new), furnace approximlatey 15 years old, AC unit 10, soffits hanging down, rotted door threshold, bedroom door that doens't latch, front door that has gaps to the exterior, electrical ground cut, a/c condenser line broken, basement foundation cracked, counter tops lift off (not sealed to cabinet), toilet loose, driveway and walkway leading to front door cracked, iron sewer line leaking, bathroom sink has leak in pipe (in the line, under the sinkbowl) and a few other items.I know not everything on the inspection report is a big deal, and inspection reports always have items on there, but..................... what concerns me is the fact that the roof was marketed to me as being new and is not, its approximately 8 years old.... the HVAC was marketed to me as being under 5 years old and its not...... its over 5 years old (with issues), counter tops weren't sealed to cabinets,soffits were supposed to be repaired (according to the scope of work) , and the foundation is cracked (which could or could not be a big deal).  

If it is a cold exterior wall a slight ir gap is good for condensation purposes.Any flooring rated for below grade will work. 

The contractor had never bothered to put the pipe in to drain condensation from the pan.

Water damage CAN in some extend to wood rot and other condensation and humidity issues, secondary losses as a result of a primary covered peril (rain damage after a broken window), basement/foundation issues, and of course water backup / plumbing...