Residential combustion spillage monitoring.

Sixteen homes were continuously monitored to determine the frequency and duration of combustion product spillage from the furnaces and DHW systems. In the houses which did show spillage activity, event-controlled sampling was used to determine l eve l s of air contaminants attributable to the spillage. Additional testing of the sample houses included: airtightness testing, air change rat e testing and " forced spillage" contaminant testing .