The utility model discloses an air condensing units concealed installation building structure, shelve the shutter in the board and the outside including the air conditioner, the air conditioner is shelved and is equipped with air conditioner installation business turn over door on left side or the right side wall of board. Air conditioner installation business turn over door is noise control sound heat preservation sealed door. The air conditioner is shelved the board and is two, and the board is shelved in the bottom of floor height to one of them air conditioner, and the board is shelved at the middle part of floor height to another air conditioner, two air conditioners respectively are equipped with the heat retaining sealed door of a noise control sound and are linked together with two left and right resident families respectively on shelving the lateral wall of board. The utility model discloses relatively has installation easy maintenance safety and the advantage that is showing of not damaging the decorative effect that constructs the surface with prior art.