Built-in air conditioners measure approximately 15 to 19 inches in height, 24 to 27 inches in width and 21 to 24 inches in depth. Window air conditioners measure approximately 11 to 19 inches in height, 16 to 26 inches in width and 13 to 26 inches in depth.
GE makes EZ Mount window and built-in air conditioners. Other installation options for built-in air conditioners include high mount and standard mount. You can also purchase an optional window kit for built-in air conditioning models.
Built-in wall and window air conditioners use either 115 or 230 V of electricity when operated. GE's built-in wall air conditioner models generate between 6,400 and 24,000 BTUs of cooling power. GE's window air conditioners produce between 5,000 and 25,000 BTUs, depending on the model.
GE built-in wall air conditioners range in price from $549 to $789, as of 2011. GE window air conditioners cost between $129 and $799, also as of 2011.