https://blog.constellation.com/2018/09/21/energy-efficient-dehumidifiers/ https://blog.constellation.com/2018/09/21/energy-efficient-d... gives a ballpark numbe

https://blog.constellation.com/2018/09/21/energy-efficient-dehumidifiers/ https://blog.constellation.com/2018/09/21/energy-efficient-d... gives a ballpark number: "In order to be approved by ENERGY STAR®️, energy-efficient dehumidifiers must have an energy factor of at least 2.00, or an energy factor greater than 2.80 for dehumidifiers that remove more than 75 pints of moisture a day." So 2-3 litres water extracted per kWh electricity consumed (And I'm guessing this is probably in best case damp conditions).