New HVAC system (York) with a scrubber installed in December. The flow emitting from the vents is loud despite the fact the settings have been lowered. In addition, the unit itself, which is in an HVAC closet, is very loud. Tried to adjust the vent openings and do not notice any change. Is there another way to decrease flow? Change out the vents? All the ducts in the attic have been checked and sealed. Do I need to replace them with another duct system?