This may involve adding ductwork, installing a separate HVAC unit, or using portable heating and cooling units.Electrical: Another important consideration is the electrical and plumbing systems.

Hello  Mano,      I would think even with temperature in 50's that the second floor would be warmer than 1st floor, did HVAC crew check to make sure the duct work to 2nd floor vents still connected? 

I am a contractor , I just did a complete gut rehab on MY property , I only called my AC sub out for the HVAC , that was 10K for new unit and duct work .

Just got an inspection report back on a SFH in the Midwest and I have some questions.The house is a single level with no basement and a crawl space which houses the ductwork and structural members.The report turned up some standing water in the crawl space as well as some mold on the wood framing.

For a rental adding central AC in south Philly is a must so a house with ductwork in place is a big bonus.

Which will make it much easier in the future to accept when I enforce the lease to the letter on future occurrences.For example, I just paid to have duct work cleaned at a rental property because the tenant was complaining of allergies and possible mold in ducts in an older house - but I didn't have to. 

We usually separate the sewer lines so we can just add some couplers and put it right back.Take some time with the HVAC as we usually leave all the ductwork down the middle and put it right back up when we get there since it already fits the house.

It was revealed that the ductwork was improperly made, and unfortunately, this issue wasn't addressed in the inspection report.I'm wondering about the potential coverage for damages caused by this improper ductwork.

Here's a list that totaled to this year alone being 35K and growing worth of repairs:1) Replaced both furnaces from tenant damages 2 times.2) Replaced stolen AC units from previous seller stealing them.3) Repaired duct work in multiple locations from previous owner improper installation plus wear and tear.3) During covid I went through 3 property managers because they refused to evict a tenant that ultimately didn't pay rent for 6 months and cost us over 10k in unit turns.

I had to replace ductwork in a rental due to damage from wild animals, then had to trap them again as not all entry points had been secured.