G-4 Study on the Maintenance of the Ventilation System for Houses. : Part 8. The Verification of the Maintenance Result (3)

Abstract

This research is the measured the dirty state and the ventilation volume about the duct for the housing ventilation. We investigated 16 independent wooden houses last year in and around Sapporo. We have got the result below that, we showed the dirt decreased by the filter and ducts cleaning and that the performance of the ventilation system is recovered.