Today the normal standards of duct systems for ventilation are air tightness class A or B. How does this correspond with the increased demand for energy efficiency presented by the European Commission? And what would be the effect if we raise the standards to class C or even class D?
As an attempt to answer these questions we have gathered information from different sources and put together this report.
Contents
Introduction to the effects ventilation has on
indoor climate
health
productivity
Technical article
Information about air tightness discussing a raise of standards against the background of increased global demands for energy efficiency.
Air tightness facts
What is air tightness?
How is it measured?
Why does a ventilation system need to be air tight?