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Infiltration refers to the air permeability of the selected structure.
The unit of infiltration is liter per second, per square meter.
Let’s suppose in our project all the external slabs were planed and built airtight and all
the external walls have just a very low infiltration.
Let’s sort the structure list by types, select all external slabs and from the pop-up
select the Air tight infiltration category.
Let’s now select all the external walls and then the Low option from the pop-up.
The Energy Evaluation function of ArchiCAD not only simulates the effect of infiltration
on the hourly energy balance, but also displays the total Air Leakage in air change per hour,
in the Key Values section of the PDF Energy Performance Report.