After the freon leak repair
We needed the upstairs A/C over the weekend for the first time since buying our new (builder spec) house a few months ago. The fan ran but the air didn't cool. A tech from the builder's HVAC sub came out today and found a nail had punctured a copper pipe, causing all of the freon to leak out into the wall cavity (& presumably down to the basement - or up to the attic?)
The odor was pretty strong when the tech cut open the drywall, but I thought it would disappear once he replaced that section of pipe. I just duct taped over the holes in the walls (it took a few tries to find the right location), and around the place where the pipe is patched & soldered there remains a pretty intense odor. There's also a faint sound akin to rushing air. Before the builder sends out his sheetrock guy & painter, does this need to be checked again? I also noticed a stain on the drywall behind the pipe which the tech said is from oil. That drywall is covered by wainscotting on the other side. Should it be cut out & replaced?
Thanks for any advice you can offer.