inspection of ventilation system./ public offering of ventilation service nov. 2022./ the contracting entity offers as a service service at ventilation systems (with associated fire dampers), which appears in the offer list, incl. replacement of filters. price for filters must be included in the service price. ventilation service must ensure that the ventilation system runs optimally for both supply and extraction and ensure good operation of ventilation systems. note that the service is offered under cpv code 71315410, which is why the new rules in the tender law regarding persons under training that in force on july 1, 2022, does not apply to this task.