ErP2026 EU2024/1834
Starting from 24 July 2026, all fans placed on the EU market as individual product shall comply with the new regulation. From 24 July 2027, fans integrated into HVAC equipment, refrigeration equipment and ventilation systems shall follow the same requirements.
All types of fans with rated input power ranging from 0.125 kW to 500 kW, including axial fans, forward-curved centrifugal fans, backward-curved centrifugal fans, mixed-flow fans, etc.
All fans shall meet the minimum Fan Energy Grade (FEG) specified under the new regulation.
Where :
η = Fan efficiency ;
CP = Power conversion loss correction factor ;
CC = Partial load compensation correction factor :
Cguard = Guard device compensation factor :
Pu（W）= Product of volumetric flow qv（m3/s）
and fan total pressure difference Δp（Pa）;
Pe（W）= Input power.
Minimum Fan Efficiency Formula：
For fans with Pe＜10kW：
For fans with Pe ≥ 10kW：