We've migrated away from using aircon/heatpumps to move heat from inside a building to outside, to basically just swamp coolers: https://engineering.fb.com/2018

We've migrated away from using aircon/heatpumps to move heat from inside a building to outside, to basically just swamp coolers: https://engineering.fb.com/2018/06/05/data-center-engineering/statepoint-liquid-cooling/ https://engineering.fb.com/2018/06/05/data-center-engineerin... they are effectively glorified wet cardboard and a fan