(See duct heat loss, recoverable)

[AIVC, Air infiltration and ventilation glossary, 1992]:a method of determining the leakage of specific building components by pressurizing the building and recording the leakage changes as the components are successively sealed.

[EN 16573-2017, 3.1.7]:fresh air volume flow qV,ref,fresh at the reference point defined at ptUd/2 and 70 % of declared maximum air volume flow( ptUd/2 = declared total pressure difference between the outlet and the inlet of the unit)