We started out in 1999 as the hygiene and methods department of the puissance air group, a company specialising in air quality.

In 2007 Puissance Air and all its activities became part of the leading facilities and services provider, the ISS group. Because of the high demand in contamination control matters, particularly in the hospital environment, the department was renamed Hygiene & Expertise in 2008 to enhance its response to this demand.

Since then this department’s priority has always been to offer its clients a high quality professional service and since 1999 it has acquired a reputation in this field, encompassing “metrology”, “HVAC-related techniques” “infection risks and microbiology” and “expert advice and consultancy”.

On 1st June 2013, HeX Belgium became independent ofISS in order to concentrate on areas relating to contamination control and environmental quality.

It was only natural that HeX France was created in 2014 with the aim of offering a comprehensive technical solution specifically adapted to the needs of its French clients.