ILK Dresden offers testing services to verify performance data in accordance with EN ISO 5801 and to demonstrate conformity with Regulation (EU) 2024/1834.

The eco-design requirements for fans under the previous Regulation (EU) No 327/2011 were repealed with effect from 24 July 2026 and replaced by the requirements of Regulation (EU) 2024/1834 and Regulation (EU) 2025/2481.

Compared with the previous regulation, the updates introduced by Regulations (EU) 2024/1834 and (EU) 2025/2481 include the following key changes:

• A revised definition of a “fan”, comprising the essential components such as the impeller, motor and stator (e.g. inlet nozzle and housing).
• Companies that integrate an incomplete fan into their products become the manufacturers and parties responsible for placing the fan on the market. (An incomplete fan within the meaning of the regulation may, for example, consist of a fan impeller that is completed to form a fan by adding a customer-specific inlet nozzle or housing.)
• Higher minimum energy efficiency requirements reflecting the current state of the art.
• Further definitions and subdivisions of the basic fan types.
• Introduction of correction factors for fan guards.
• Inclusion of jet fans (installation category E in accordance with EN ISO 13349).
• Mandatory specification of performance data at part-load operating conditions for catalogue fans (100%, 40% to 50%, and an additional defined operating point in between).
• Greater alignment of terminology and definitions with the relevant standards, particularly EN ISO 5801; EN 17166 and other applicable standards.
• Mandatory spare-parts availability for a period of 10 years.
• Free public access to fan product information on a website for a period of 20 years.

Specific implications for manufacturers of air-handling equipment

A major change affects manufacturers of air-handling equipment with integrated fans, such as ventilation units, dry coolers, air-conditioning units and similar systems. These products typically incorporate incomplete fan assemblies into the equipment housing. A characteristic feature is that the equipment housing itself serves a functional purpose as part of the finished fan. For example, in dry coolers, the equipment housing may also serve as the inlet nozzle and is therefore an essential component of the fan housing.

Under the framework of the Eco-design Directive 2009/125/EC, the complete fan is therefore only created when the incomplete fan assembly supplied by the fan manufacturer is installed in the equipment housing. Consequently, the manufacturer of the complete appliance becomes the manufacturer of the now-complete fan within the meaning of the regulation, as it is the party placing the fan on the market for the first time.

Since 24 July 2026, manufacturers of such equipment have therefore been required to demonstrate compliance with the eco-design requirements set out in Regulation (EU) 2024/1834, document the fan's CE conformity and make the relevant information freely accessible on their website.

Do you need to demonstrate ErP-Conformity for a fan integrated into your product?

ILK Dresden  operates a fan test rig accredited in accordance with EN ISO/IEC 17025 and compliant with the requirements of EN ISO 5801. The test rig can be used to measure fans at volume flow rates ranging from 0.003 m³/s to 3 m³/s (11 m³/h to 11,000 m³/h) and pressure increases of up to 10 kPa.

We offer the following services:

• Standard-compliant measurement of fan performance curves in accordance with DIN EN ISO 5801.
• Support with the implementation of the Eco-design Directive 2009/125/EC and conformity assessment in accordance with Regulation (EU) 2024/1834.
• On-site support during measurements and expert advice on influencing factors and potential for aerodynamic optimisation.
• Further development of your products to improve their performance and usability.
• Training in the measurement and evaluation of appliances with integrated fans.