You also need an electric wire/fuse with a certain capacity and not every house has that, esp. when it's old, they cook and heat with gas; worse if the cabling etc. up to the property has to be updated too.
And this might sound trivial but if it's a block of flats and every flat installs at least one AC unit all of this adds up to huge additional demand which is far far more than a small hole.
That's for a larger unit. Most of the world is using low power mini splits that draw less than the max on one outlet. You only need to cool the bedroom(s).
Trust me, the rest of the world has figured this problem out a long time ago. The hottest countries in the global south tend to also be the countries with low electrical capacities.
If you live in a country where 3kW is the electrical capacity of your entire house, you just buy an AC that draws around 1kW.
You size the AC units to your circuit you don't size your circuit to the AC.
