Four factors are driving personal air-conditioning.
Climates are warming.
Summer temperatures in cities are rising even faster.
Productivity growth has almost stopped. We’re not going to see new buildings popping up everywhere. Most of us will be living in the buildings we see today.
Electricity to run air-conditioners at night will be more expensive when the sun doesn’t shine.
Only a tiny minority living in hot climates can afford traditional air-conditioning.
Personal air-conditioning is energy-efficient, sustainable and affordable. Everyone can enjoy comfort while sleeping and working, without altering existing buildings.
Why would I not be optimistic!