room air conditioner [2]
Device installed in a window for cooling and circulating the air in a room.
control panel 
Panel containing the controls that operate the air conditioner.
thermostat 
Mechanism that, by sensing changes in temperature, will automatically switch the air conditioner on or off.
blower motor 
Device transforming electric energy into mechanical energy to drive a device; in this case, the fan.
evaporator blower 
Device drawing in warm air from the room, directing it over the cold evaporator coils and then returning it to the room.
fan motor 
Device transforming electric energy into mechanical energy to drive a device; in this case, the fan.
condenser fan 
Propeller-shaped fan drawing outdoor air through the vents and over the hot condenser coils to cool them.
condenser coil 
Tube in which the hot refrigerant dissipates the room’s heat to the outdoors.