A description fig1 illustrates a typical heating ventilation and air conditioning system hvac 10 including a noise reducing air distribution system seen generally at 12 according to one embodiment of the present invention the hvac system 10 of generally includes a heating ventilation and air conditioning housing 14 containing an evaporator core a heater core and a blower assembly for moving air through the housing 14 climate control systems utilizing these elements are well known to those skilled in the art and no further explanation is necessary the hvac system 10 may also include a fresh or outside air inlet 16 and a recirculation air inlet 18 the fresh air inlet 16 drawing air from outside the vehicle interior or passenger compartment into the housing 14 and the recirculation air inlet 18 drawing air from inside the vehicle interior or passenger compartment into the housing 14 the blower assembly then moves the air drawn into the housing 14 past the evaporator or heater core and out into the vehicle interior or passenger compartment of the vehicle as shown the hvac system 10 distributes the airflow to a plurality of outlets including front air conditioning or ventilation outlets 22 along with defrost and floor oriented heater outlets 24 26 turning now to fig2 there is shown a schematic of a noise reducing air distribution system 12 according to the present invention as illustrated left and right air ducts 26 28 extend from a plenum chamber 30 connected to the housing 14 the left and right air ducts 26 28 provided a flow path for.