room air conditioner [1]
Device installed in a window for cooling and circulating the air in a room.
vent 
Grate through which outdoor air is drawn inward.
grille 
Grille through which the heated air is diffused in the room.
control panel 
Panel containing the controls that operate the air conditioner.
function selector 
Knob for regulating the temperature and the fan speed.
fan control 
Knob for regulating the rate of air flow.
thermostat 
Mechanism that, by sensing changes in temperature, will automatically switch the air conditioner on or off.
louver 
Device directing cool air into the room.
casing 