Effectiveness of ventilation interventions at improving indoor air quality in Canadian homes with asthmatic children

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Proceedings title10th International Conference on Healthy Buildings, 2012
ConferenceHealthy Buildings 2012 (10th International Conference), 8-12 July, 2012, Brisbane, Australia
Pages25692574; # of pages: 6
Subjectfield study; asthma; ventilation; indoor air quality; ventilation rate; volatile organic compounds
AbstractThis paper describes the results obtained during a randomized intervention study investigating the impact of ventilation rates on indoor air quality (IAQ) and the respiratory health of asthmatic children in Québec City, Canada. The objective of this study was to determine whether increased ventilation will lead to a corresponding decrease in the number of asthmatic symptoms in children, to correlate ventilation rates with IAQ, and to support research on health based ventilation rates. The ventilation intervention consisted of the optimization of the existing mechanical ventilation system or the addition of a heat recovery ventilator (HRV) or an energy recovery ventilator (ERV). The aggregate median air exchange rate during the heating-season in the intervention group was 0.17 h-1 before the intervention and 0.36 h-1 after the intervention. After the intervention there was a marked decrease in the concentration of a number of VOC’s, formaldehyde, CO2 and airborne mould spores demonstrating that ventilation interventions are effective at improving IAQ.
Publication date
PublisherCurran Associates
AffiliationNational Research Council Canada; Construction
Peer reviewedNo
NRC numberNRC-CONST-55285
NPARC number21268286
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Record identifiere46ddf3f-de95-43fb-8ce8-8f15d6a0d02f
Record created2013-06-13
Record modified2017-05-31
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