A split AC might cost more than twice as much as a window AC. About 70 percent of new installations are window ACs and 30 percent are spit ACs.
The cost factor is even more important if only a small area needs requires cooling; in that case, a window AC may be a better choice.
Installing a split AC is complicated and takes far more labor. The overall costs to install one are far greater than a window AC.
The farther a split AC compressor is from the space to cool, the more involved is the tubing needed to carry the cooled air, which increases the cost of installing a split AC.
Generally speaking, a split AC is impractical or even impossible for an apartment located far from the ground where outdoor compressors are usually located. A split AC can generally push air 30 to 40 feet to the area to be cooled.
If you live in a 10th floor apartment, it is unlikely that you can install a split AC.
Lack of Mobility
If you rent an apartment or house and you move frequently, installing a split AC is not good. Not only is it more far more costly to install a split AC, but it is also more expensive to uninstall one.
If you move a lot, a window AC is a better choice.