Summary of results of Phase 1 with measurements from five apartment blocks. Kurzfassung des berichtes zu Phase 1 mit messungen an funf mehrfamilienhausern.

During the winters of 1982/83 and 1983/84, air infiltration measurements were made in 34 dwellings in 5 apartment blocks. In all 34 dwellings the air leakage of the building shell was measured by pressurization. In 5 dwellings tracer gas decay rate was used to measure the air change rate, both with andwithout mechanical ventilation. Results of these measurements are presented.