Two Hose Conversion Silvercrest PC-8871 7000 BTU Mobile AC

This model allows connecting a hose to the Silvercrest PC-8871 7000 Mobile AC inlet. With a second hose, there is no more vacuum with closed windows/doors and it should increase efficiency. You have to print two parts: One replacement for the outlet to create space and the inlet adapter. The inlet adapter needs a 30 cm × 30 cm × 30 cm printer, else you have to cut it in the slicer and glue the parts.

The STL files have the correct print orientation (hose side down). I recommend to use inner and outer brim.

To make room for the new inlet adapter, you have to print a replacement for the outlet adapter (out.stl). For the outlet, use PETG or a more heat resistant material (I have used ABS).

I have printed the inlet as in files named "in" and found that the hose connector is unnecessary far on the side. Therefore, I have created version 2 ("in_2") which wastes less material, but is untested. If you print it, please tell in the comments if it works properly.

To drill, just print the first few layers of the AC side as template (or use "in_2_drilling_template.stl"). I have used a 2 mm drill and directly screwed M3 5 mm metal screws in the plastic (without using heated inserts).

For the window, I have cut a piece of PS foam (there are also higher quality foams) to the size of the window and made two holes for the window_outlet.stl parts. With these outlets, you can direct the hot air in a different direction.

I have just cut the original hose in two pieces because I have my AC in front of the window.