Upon arrival the technician found that the insulation blowing through the system is just a bit of insulation from the return. The technician also address the molding issue. The technicians best recommendation would be to install a river halo on a system to eradicate all the mold in the house. The technician also informed the customer that the rusting vent in the restroom should be changed out for a plastic vent so that it does not condensate. Technician also spoke with the homeowner about installing a supply and return in the bedroom so that they can cool down the bedroom easier.