Clean classified HVAC components - a Finnish approach.

To achieve a high standard of indoor air quality for new building requires a special knowledge of emissions from materials, design of ventilation systems as well as construction practice. Besides regulations, common rules and instructions are needed to be obeyed to achieve a good result. Classification of cleanliness of new ventilation systems is a voluntary document which determines the cleanliness of classified components produced by manufacturers. If a high quality of supply air is needed the classification is a tool for designers to carry out high quality indoor climate when also the classification of Indoor Climate, Construction and Finishing materials are applied. In this paper, a proposal for the classification of the cleanliness of new ventilation systems is introduced.