Air Conditioning - installing a horizontal window A/C vertically

Hello,
I am couple of cm's short for my horizontal A/C to fit into my sliding window, have to options:
- etiher remove the whole sliding glass and buy acrylic glass sheet and cut through it, this is too costy (almost as much as I paid for the A/C itself).
- install it vertically into the window withouth the need to remove the glass and just a small acrylic sheet is needed to complete the empty space (basically half the window).
so my question again, is it possible to do this ..? is vertical A/C designed to be placed vertically or shouldnt this be a problem provided i use appropriate support and mounts..?
Thanks and best regards,
Ahmed

naw you would have to have a unit designed to install in that position. The normal refrigerant system uses refrigerant oil and the oil pan (storage spot so to speak) is the bottom of the compressor body, if you turn the unit on its side the system will not operate for long as the compressor bearings will burn out. Actually it may not cool at all since the refrigerant oil will flood the lines and probably plug the orfice tube. Perhaps a different brand unit would be a different width that would work better for you?

wooow, that was fast,
Thanks for the tip, I reached that conclusion once i found some water dripping from bottom of the unit when i was lifting it, a quick glance through the manual: "dont drill holes at the bottom of the unit as it is designed to work with 1/4" of water at it" :)
Thanks for the fast reply though,
Regards,
Ahmed

Comfort-Aire has units for that . They are made for slider and casement wondows.
That water in the unit is so the fan picks some up and throws it on to the outside condenser coil to help cool the hot freon gas down to a liquid. ;)