Regardless of the year of installation, forced-air ventilation systems should receive a document certifying their condition. Such a certificate contains detailed information regarding all characteristics of the ventilation system, including even the frequency at which the motor blades rotate.

Obtaining special documents is necessary for those ventilation systems that have a mechanical air supply unit. Natural ventilation systems do not need to be documented. During planned and unplanned inspections, the services responsible for control pay special attention to ventilation systems. They must make sure that the ventilation system is organized correctly and does not need improvement. Otherwise, for the owner of the room or the whole building it can turn into a fine.

One of the most important hygienic indicators of the effectiveness of indoor ventilation systems is the rate of air exchange in the room. This indicator defines the quantitative ratio of the weight of the air entering and leaving the room, within a certain period of time. Replacement of the air mass inside buildings and various structures is called air exchange.

Any company sooner or later has to check the ventilation system. Over time, it can become ineffective. Often an inspection is performed at least once a year. There are unscheduled inspections by specialized agencies, such as the Consumer Inspection Service, the Fire Department, and other agencies.

There should be an analysis of all systems. This includes exhaust, supply, and forced-exhaust systems.

Through inspection, you can study the effectiveness of the system installed in the organization. It must comply with regulations, such as health codes and hygiene standards. Specialists will help you to identify areas that do not work. All violations will be recorded in the act of inspection.