Why do we need good ventilation - and what is it?

Raise the standards within Ventilation

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.


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?

Download the report for free!