Access door assembly for a vertical air conditioning unit

An air conditioning appliance defining a vertical direction, the air conditioning appliance comprising:

• a housing comprising a wall disposed in the vertical direction, the wall defining an opening therethrough;
• a heat exchanger disposed in the housing;
• a compressor in fluid communication with the heat exchanger to circulate a refrigerant through the heat exchanger;
• and
• a door assembly attached to the wall proximal to the opening, the door assembly comprising
• a frame removably secured to the wall and surrounding the opening, the frame comprising a tab protruding from a first surface of the frame and extending in the vertical direction, and
• a door pivotably connected to the frame, the door defining an aperture into which the tab is received, wherein a length of a first edge of the tab that extends along the first surface of the frame is shorter than a length of a second edge of the tab opposite the first edge, and wherein the tab is symmetrical about a horizontal centerline of the tab.