2020 and 2050 weather files

The weather files with reference to the 2020s will cover the 30-year climatic period around that decade. This means that it covers the period 2010 to 2040, with the 2020s being the middle of the three decades (10’s/20’s/30’s).

Any projects that will be completed before 2025 should use the 2020 weather files for mechanical ventilation, and the 2050 weather files for natural ventilation.