re: Any HVAC Professionals?

I have watched some YouTube videos where cooling problems was associated with incorrectly sized or faulty thermal expansion valve (TXV) or fixed piston/orifice, depending upon what your unit has, a TXV or piston/orifice. In fact a HVAC tech from Louisiana who post videos widely on YouTube posted one on cooling problem his personal new “used” house was having and the problem was an incorrectly sized expansion valve which he had to change out to the correct size to fix the issue

Sounds like you might need to pay a couple hours labor for a highly experienced HVAC tech to come and check your system. Maybe you’ve found one in the other guy you talked to.

I was going to ask if you’re sure your humidity meter is correct but your definitely going to feel humidity that exceeds 55-60%. Hopefully it’s going to be a simple fix and not a sizing issue. If you have pink fiberglass insulation in walls you likely have that in the attic but you should check. Is your air handler is in the attic or is it a closet in the conditioned area of the house?