BHS Bad Homburger Servicegesellschaft mbH (BHS) is a wholly owned subsidiary of the Deutsche Leasing Group. With approximately 250 employees, the company provides services for receivables and collateral management to Bad Homburger Inkasso GmbH (BHI). As part of the Sparkassen-Finanzgruppe (Savings Banks Finance Group), BHI is Germany's leading debt collection agency, handling a receivables volume of over €18 billion. Its nearly 1,000 clients include savings banks, state banks, insurance companies, building societies, and energy suppliers. To accommodate growing space requirements, BHS and BHI relocated their headquarters from Bad Homburg to Bad Vilbel at the end of 2014, moving into a 5,000 m² space in an existing building. Shortly after the move, it became apparent that the indoor climate of the new workspaces was increasingly leading to complaints from employees.

BHS was supported by the facility management service provider Wisag in evaluating alternative humidification solutions. The high cost of manual filling and regular cleaning was a major drawback of humidification using mobile units. Calculations showed that over 100 individual units would have been needed to achieve approximately the required amount of moisture across the entire area. Additionally, the hygienic operation of evaporators was critically assessed. Klaus Heubach's search for nozzle system suppliers led him to the manufacturer Condair Systems and the Draabe humidification system: "We were looking for a humidification system that could guarantee high hygiene standards and operational reliability. Since the Draabe system could demonstrate both the 'Optimised Humidification' certificate from the German Social Accident Insurance (DGUV) and the possibility of annual VDI certification, we were confident that we had found a suitable system." Finally, visits to a tourism company and a savings bank, both of which have been successfully using the Draabe humidification system for their employees for years, convinced us of its merits.”

The central components of the water treatment system are housed in portable containers that can be easily exchanged every six months for maintenance and cleaning. Furthermore, the humidification system is certified annually during operation according to VDI guideline 6022, sheet 6. "We have absolutely no maintenance to do. Wisag coordinates the replacement of the containers for us every six months. This ensures the system is always state-of-the-art and safe. The VDI certification guarantees us hygienically sound humidification at all times," confirms Klaus Heubach. The indoor climate has noticeably improved for employees since the humidifiers were installed. Especially in winter, the air is now perceived as pleasant and fresh. Klaus Heubach has not heard any complaints about excessively dry air since then: "Choosing this humidification system was the right decision. It is ideally suited for professional retrofitting and highly recommended for our application."