I'm trying to install a window unit air conditioner, but most of the installation instructions don't seem to work with this window configuration.
A little bit about the setup: The apartment is the 5th floor of a pre-war walkup building that has gone through various renovations, but none that have made it too modern. The window is about 30" wide, and is a metal frame.
There are two issues that make it hard to install a window AC unit:
- The window sill is made out of metal, so I can't nail or screw anything into it
- The base of the window has a thin (about 1/4") piece of metal jutting out of the buttom that's 2" high in the interior and 1.5" high in the exterior. This means I can't rest any part of the air conditioner on the sill - it ends up just resting on that piece of metal.
Most of the AC units I've looked at have brackets that get nailed into the window sill, and also require that they can sit flat against a ledge to fall into the brackets. Some examples of the instructions for the units for sale in my area are here:
Looking at my neighbors' apartments, it looks like their units have been there for decades, and some are propped up on things like phone books or 2x4s. I'm hoping to find a safer solution than that, so I don't accidentally drop a 50 pound AC unit 5 stories. I tinkered with it yesterday (using the LG unit), and the best I could come up with was wedging the AC in at an angle and closing the window, but that didn't seem safe or stable, and left a hole to the outside because the curtains weren't flush with the window.
Is it possible to install a window air conditioner in this setup, and how would I go about doing it?