A clean room is one or more working environments created for research and production purposes, free of airborne particle concentrations and other particles, where business-specific pollutants are kept under control and humidity controls are ensured. In order to ensure the desired level of cleanliness, the ventilation system, the equipment used and the users' entrances and exits to the environment must be controlled.

There are different types of clean rooms that need different filtration and air conditioning solutions depending on their intended use. Appropriate design and project planning is made in line with the activity area, cleaning class and usage requirements of the room.