HEATING, VENTILATION, AND AIR CONDITIONING SYSTEM

The invention relates to a HVAC system including a housing and a blend door being pivotable along a pivot axis between a full hot position defining a 100% blend position and a full cold position defining a 0% blend position. The blend door includes a front side parallel to the pivot axis and two lateral sides and the housing includes a shade area configured to wrap around the front side, the lateral sides and the corner linking the front side to the lateral sides of the blend door, so as to restrict at least one air gap between the housing and the front side, at least one air gap between the housing and the lateral sides, and at least one air gap between the housing and the corner, when the blend door is in a predetermined angular range defined between the full hot position and the full cold position.