IRSST publication

Heating, Ventilation and Air Conditioning - Validation of System Cleaning Initiation Criteria under Real Conditions

Lavoie, Jacques; Marchand, Geneviève; Cloutier, Yves; Beaudet, Yves; Lavoué, Jérôme
Studies and Research Projects / Report  R-666, Montréal, IRSST, 2010, 25 pages.

Version française disponible : R-657

Project: Validation des critères de déclenchement du nettoyage des systèmes de chauffage, de ventilation et de conditionnement d’air (CVCA) dans des conditions réelles

Champ: Chemical and Biological Hazard Prevention


The cleanliness of a ventilation system invariably affects the quality of the air that it distributes. However, it is difficult for building managers to assess the relevance of having their systems cleaned and to choose from among all the proposals from cleaning specialists because no objective method exists for evaluating the dustiness of systems. In the context of a previous project, the researchers developed a method for collecting surface dusts in heating, ventilation and air conditioning (HVAC) ducts and identified criteria for initiating cleaning. The method was validated in the laboratory and compared to those methods mentioned in the scientific literature [Association pour la prévention et l’étude de la contamination (ASPEC), of France, and the National Air Duct Cleaners Association (NADCA), of the United States]. They all proved feasible by using their corresponding cleaning initiation criterion.
In a new study, which this report describes, the same team validated the criteria for these methods in the ventilation systems of occupied non-industrial buildings. Once again, the results were conclusive. Building managers can now rely on the objective criteria of the offered methods, rather than basing themselves solely on visual inspection, which is subjective.



Validation of the criteria for initiating the cleaning of heating, ventilation and air conditioning (HVAC) systems unde ... >>

Research results presentations (2010)

(In French only)

The cleanliness of a ventilation system invariably affects the quality of the air that it distributes.

Jacques Lavoie,  researcher, IRSST

Filmed on 07/12/2010

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