Which type of air conditioning is more environment friendly - doing the cooling per apartment or central cooling (for high rise residential buildings)?
My understanding is that central cooling is more effective than using separate units.
We see different patterns in different parts of the world:
For example: Singapore and Dubai both have high rise buildings for living (residential), but Singapore residents use split a/c in their houses whereas Dubai buildings use central a/c.
The per capita income in Singapore is more than Dubai ($55k vs. $44k). Maybe that has to do with the difference?
Is there any specific reason for this pattern and which type is more environment friendly?