"RJ" wrote in message
...

A neighbor installed a window A/C

It's tilting quite a bit out the window.

I suggested he level it for better operation.

He claims it shouldnt make any difference.

????

Yes, it will make a difference. The AC has a drain pan that catches the
condensate. The water is picked up by the slinger ring condenser fan and is
slung onto the coil giving it a bit more cooling. No drips, better cooling.
Make it level.