Your room AC likely costs you something like Rs10 an hour to run, and needs about 2,000W power. To start with, if you have a creaky ten-year-old window AC, do yourself a favour and get a new, split, BEE five-star rated, inverter AC. A word on larger buildings like offices and commercial spaces: the closer you follow the energy conservation building code (ECBC), the less your energy load will be. All the heat being thrown out of buildings by AC cooling units and other devices ends up collecting in the surroundings. The answer is self-evident: we need as much greenery and as much circulating water around us as we can get.

Source: Mint May 27, 2017 18:11 UTC