The truth is that with climate change, more and more people will need modern air-conditioning to be comfortable in their homes (or in some parts of the world, to survive).
We will likely see a massive expansion of air conditioning as more and more people come out of poverty and desire to be comfortable across the developing world.
We can’t conserve our way out of this crisis. We need abundant, zero carbon energy like wind, solar, and nuclear to support all the energy needs of humanity.
If we don’t have zero carbon energy people are not going to do without, they are going to burn fossil fuels. Take a look at Germany. Despite all their rhetoric about how much they care about climate change, they are burning coal which is the dirtiest of the fossil fuels.