Baltimore Investment Property....Help BP

[Andrew Brink]

Good Morning Biggerpockets World!

I have recently purchased a house as my first investment/home. It was a newly renovated house with new hardwoods, appliance and so on. I have been in the house for less than a month, househacking with some friends. I discovered a leak in the basement coming from the crown molding. After calling the home warranty company and having a specialist come out, he discovered that the airducts are leaking from condensation. It is a 2 story house with a basement and each level of the house is sufficiently hotter as you go up. The upstairs is about 40 degree hotter than the basement. The HVAC specialist discovered that the return vents on the first floor and the second floor as barely working. We cut into the wall to discover pile wood underneath the airducts collecting water. The seller said he put the pile wood there to attach the drywall (which you never should do/need to do) to me it seems as he discovered an issue and tried to fix it an easy way and have it hold up enough to sell the house. I am turning to my friends in bigger pockets for advise on what to do in this situation? Can I go after the seller? The estimated work is about 3000.

Thank you all in advance for you advise!!!