Launched in 2024

World Humidity Control Day commemorates John Frederick Daniell, born on March 12, 1790.  Daniell was an English Chemist and Physicist who, in 1820, invented a dew-point hygrometer (a device that indicates atmospheric humidity) , which then came into widespread use.

Launched in 2024 by the UK HEVAC Humidity Control Group, World Humidity Control Day is taking place on

Wednesday 12th March

to raise awareness of this important subject and the impact it has on our daily lives and the buildings we live and work in.