New Hot-Water Boilers Fired With Liquid Or Gaseous Fuels: Directive 92/42/EEC

Directive 92/42/EEC – Efficiency Requirements

Hot water boilers placed on the European market must comply with the efficiency requirements defined in Directive 92/42/EEC on the efficiency requirements of new liquid and gas fired hot water boilers.

This directive aims to improve energy efficiency and reduce environmental impact by establishing minimum efficiency requirements for boilers used in central heating systems. Compliance with these requirements must be demonstrated before the CE marking can be affixed to the product.

The directive applies to liquid and gas fired hot water boilers with a nominal heat output between 4 kW and 400 kW.

Why Boiler Efficiency Certification?

Boilers are widely used in residential, commercial, and industrial heating systems. Ensuring their efficiency and environmental performance is essential for reducing energy consumption and minimizing emissions.

Certification under Directive 92/42/EEC helps manufacturers:

• Demonstrate compliance with European efficiency requirements
• Improve the energy performance of heating systems
• Reduce environmental impact and emissions
• Facilitate market access across the European Union
• Strengthen confidence among regulators, customers, and stakeholders

Scope of the Directive

Directive 92/42/EEC applies to hot water boilers designed for central heating systems that are fired by liquid or gaseous fuels.

The directive does not cover:

• Solid fuel boilers capable of burning multiple fuels
• Appliances used for instantaneous water heating
• Hot water heaters used exclusively for cleaning purposes

Our Services

ECES provides independent conformity assessment services supporting manufacturers throughout the CE marking process for hot water boilers.

Our services include:

• Evaluation of applicable regulatory and technical requirements
• Review of technical documentation
• Performance and efficiency testing
• EU Type Examination
• Conformity assessment procedures for series production
• Verification of compliance with European regulatory requirements

These services support manufacturers in demonstrating that their products meet the efficiency requirements defined in Directive 92/42/EEC.

Conformity Assessment Modules

Products within the scope of Directive 92/42/EEC must undergo conformity assessment procedures before being placed on the European market.

The conformity assessment process typically includes:

• Module B – EU Type Examination: Assessment and certification of the boiler design and performance characteristics.
• Module C – Conformity to Type: Verification that products manufactured in series conform to the approved type.

Products Covered

Examples of products falling within the scope of Directive 92/42/EEC include:

• Gas-fired condensing hot water boilers
• Gas-fired condensing boilers
• Liquid fuel fired condensing hot water boilers
• Liquid fuel fired boilers

Why Choose ECES

ECES supports manufacturers with independent and technically competent conformity assessment services.

Working with ECES provides manufacturers with:

• Independent testing and certification services
• Technical expertise in European regulatory requirements
• Structured and transparent conformity assessment procedures
• Efficient completion of the CE marking process

Through its conformity assessment services, ECES helps manufacturers ensure that their products meet European efficiency requirements and are ready for successful market entry.