Need to return to install return grill in attic and well as a 4 inch flex with a collar. This will help remove the trapped moisture in the attic. Need to reseal 4 inch flex to laundry room after drywall is fixed. Install team will return to complete venting. System is running at this time. Thank you for choosing Total Air 10-13The return and supply lines were installed in the attic. I had a conversation with him about installing dehumidifiers in the attic if necessary.