Anyone install an A/C unit made for a double hung window in a casement/slider window? How is it done?

Question

There is no sill outside the window, so nothing for the unit to rest on.

Answer 1

You can take the cabnet apart and s***w it down the bottom and put the top back on I have had to do this before for the same reason.

Answer 2

The best solution would be an angle bracket screwed into the outside wall below the window to provide the support you need. That's obviously the safest. You'll get additional strength to keep it from sliding out the window if you remove the plastic accordion spacers from the right and left sides. You don't need them anymore and closing the window directly against the case will provide better support.

Another solution is possible if the air conditioner can be slid in and out of its metal shroud. Put the empty shroud in the window and s***w it to the window frame on the side and at the bottom. Then insert the air conditioning unit back into the shroud.

Measure the amount of open space between the top of the airconditioner and the top of the window. Run to the hardware store and buy a sheet of 1/8 or 1/4 plexiglass cut to fit snugly. Slide it in and seal any cracks with tape.

Edit: If you can't mount anything outside, how about an L-shaped bracket that's attached to the inside on the wall, with the "L" part extending out the window horizontally like a shelf. The air conditioner can sit on the bracket. You'd have to make sure the bracket is made out of something that will not bend - like 1/4-inch aluminum.