BS EN 17625:2025 - Rooftop Units: Testing and Rating Standard

Introducing the BS EN 17625:2025, a comprehensive standard that sets the benchmark for testing and rating rooftop units under standard rating conditions and part load conditions. This standard is essential for professionals in the HVAC industry, providing a detailed framework for calculating seasonal performance, ensuring efficiency, and optimizing energy use.

Key Features of BS EN 17625:2025

This standard is meticulously crafted to cater to the needs of engineers, manufacturers, and quality assurance professionals who are involved in the design, testing, and implementation of rooftop units. Here are some of the standout features:

• Standard Number: BS EN 17625:2025
• Pages: 112
• Release Date: November 17, 2025
• ISBN: 978 0 539 31923 1
• Status: Standard

Why Choose BS EN 17625:2025?

The BS EN 17625:2025 standard is not just a document; it is a vital tool that empowers you to achieve excellence in the performance of rooftop units. Here’s why it stands out:

Comprehensive Testing Protocols

With 112 pages of detailed guidelines, this standard provides exhaustive testing protocols that ensure rooftop units are evaluated under both standard and part load conditions. This ensures that the units perform optimally across various operational scenarios, leading to enhanced reliability and customer satisfaction.

Enhanced Seasonal Performance Calculation

The standard offers a robust framework for calculating seasonal performance, which is crucial for understanding the energy efficiency of rooftop units over time. This helps in making informed decisions that can lead to significant cost savings and reduced environmental impact.

Industry Compliance and Quality Assurance

Adhering to the BS EN 17625:2025 standard ensures that your products meet the highest industry standards. This not only boosts your brand’s reputation but also assures your clients of the quality and reliability of your rooftop units.

Who Should Use This Standard?

The BS EN 17625:2025 is indispensable for a wide range of professionals, including:

• HVAC Engineers and Designers
• Quality Assurance Professionals
• Manufacturers of Rooftop Units
• Energy Efficiency Consultants
• Regulatory Bodies and Inspectors

Stay Ahead with BS EN 17625:2025

In an ever-evolving industry, staying ahead of the curve is crucial. The BS EN 17625:2025 standard equips you with the knowledge and tools necessary to innovate and excel. By implementing the guidelines set forth in this standard, you can ensure that your rooftop units are not only compliant but also at the forefront of energy efficiency and performance.

Conclusion

The BS EN 17625:2025 is more than just a standard; it is a commitment to excellence and sustainability in the HVAC industry. With its comprehensive guidelines and focus on performance optimization, it is an invaluable resource for anyone involved in the design, testing, and implementation of rooftop units. Embrace the future of HVAC with confidence and ensure your products are the best they can be with the BS EN 17625:2025 standard.

BS EN 17625:2025

This standard BS EN 17625:2025 Rooftop units — Testing and rating at standard rating conditions and part load conditions for calculation of seasonal performance is classified in these ICS categories:

• 91.140.30 Ventilation and air-conditioning systems

document specifies the terms and definitions, the test conditions and the test methods of air-sourced and water-cooled roof-top units, driven by electric compressor(s), which may be equipped with a supplementary heater using electrical resistance or combustion of fossil fuel. This document covers roof-top units with 2, 3 or 4 dampers, including several features as the free-cooling, mixing air flows (on both sides) and heat recovery. This document deals with roof-top units providing space heating and/or cooling for comfort application. Process applications are not covered by this document. This document provides the part load conditions and the calculation methods taking into account roof-top units features for the determination of seasonal energy efficiency SEER and SEERon, seasonal space cooling energy efficiency ηs,c, seasonal coefficient of performance SCOP, SCOPon and SCOPnet, seasonal space heating energy efficiency ηs,h and the overall annual efficiency. Such calculation methods may be based on calculated or measured values. In case of measured values, this document covers the test methods for determination of capacities, EER and COP values during active mode at part load conditions. It also covers test methods for the determination of power input during thermostat-off mode, standby mode, off-mode and crankcase heater mode. A roof-top unit that is not using at least the thermodynamic cycle for space heating is considered as a cooling only unit. Roof-top units equipped with additional air heating and/or cooling heat exchangers will be rated without operation of these heat exchangers.