Windows

Clear story windows can be converted into operable windows by replacing the fixed glass with a "hopper style window" which can be opened and closed by use of a spring loaded latch which is manipulated with one of those old style school house window poles.

All double hung windows which have the top sash painted shut can be repaired and modified to allow for maximum venting at a higher level in the room.

Installing a new high operable window or skylight will usually cost less than a single room air conditioner, and require no ongoing energy consumption while providing good ventilation and cooling.

Article: 
Air Conditioning