Air testing and L2A regulations:
There is now a testing requirement for buildings above 500m² GIFA (Gross Internal Floor Area)
The test standard has changed for buildings over 500m² GIFA and is now based on the Air Leakage rate that is used in the BER calculation (Building Emission Rate – from SBEM calculation)
Buildings below 500m² GIFA do not require a test if a leakage rate of 15m³/hr/m² is used to calculate the BER.

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