Abstract: A low-profile window-mountable air conditioning-heating system, described herein, includes an air conditioning-heating unit formed by interior and exterior housings and interconnected by a bridge housing that encloses flexible fluid lines and sliding bridge rails. The system also includes a mounting frame that supports the unit across a building wall and enables pivoting and extension to simplify installation and accommodate different wall thicknesses. The system further includes a window-frame seal configured to seal between the bridge housing and a window frame. The seal may include a channel insert, a first sealing unit, and a second sealing unit configured to transfer load into a lower channel of the window frame, accommodate different window geometries, and maintain a low position within the window opening. Some of these components may be foldable, cuttable to size, and configured with drain openings to direct water into the window frame for discharge through weep holes.

Abstract: A low-profile window-mountable air conditioning-heating system, described herein, comprises an air conditioning-heating unit formed by interior and exterior housings and interconnected by a bridge housing that encloses flexible fluid lines and sliding bridge rails. The system also comprises a mounting frame that supports the unit across a building wall without permanent attachment or wall penetration. The frame also enables pivoting and extension to simplify installation and accommodate different wall thicknesses. The system comprises a window-frame seal with a center seal module and stackable seal modules to accommodate varying window widths. The center seal module comprises a rigid base configured to interlock with other bases thereby filling the gap in different window sizes while enhancing thermal insulation, water resistance, and durability. The modular aspect of the window-frame seal provides improved weather sealing, simplifies installation, and avoids the limitations of conventional seals.