ISO 13253:2017/Amd 1:2020

Overview

ISO 13253:2017/Amd 1:2020 is an important amendment to the international standard governing the testing and performance rating of ducted air-conditioners and air-to-air heat pumps. Developed by ISO Technical Committee ISO/TC 86 and its Subcommittee SC 6, this amendment refines testing methods to ensure consistency and accuracy in evaluating HVAC equipment performance under standardized conditions. The document enhances the existing framework by specifying allowable variations during steady-state cooling and heating tests, critical for manufacturers, testers, and regulatory bodies.

This standard is essential for stakeholders involved in the refrigeration and air-conditioning industry, ensuring reliability in rating performance and facilitating fair market comparison of products.

Key Topics

• Testing Procedures: Defines acceptable variations in test parameters such as external static pressure (ESP) to maintain steady-state conditions during performance testing.
• Performance Rating: Establishes updated guidelines for rating ducted air-conditioners and air-to-air heat pumps based on reproducible test results.
• Indoor Air Enthalpy Method: Provides specific criteria related to this test method, including allowed variations for steady-state cooling and heating capacity tests.
• Technical Updates: Amendment includes revised tables detailing pressure tolerance, ensuring accurate measurement and rating aligned with real-world operating conditions.
• Standardization Framework: Ensures alignment with ISO/IEC Directives, supporting international harmonization in HVAC testing standards.
• Patent and Copyright Considerations: Recognizes intellectual property rights involved in test methods while providing guidelines for lawful use and reproduction of the standard.

Applications

ISO 13253:2017/Amd 1:2020 is useful for:

• Manufacturers of HVAC Equipment: To certify product performance that meets established international benchmarks, enabling product marketability worldwide.
• Testing Laboratories: For implementing standardized and reproducible testing methods to validate equipment efficiency and capacity.
• Regulators and Certification Agencies: To enforce compliance with energy efficiency regulations and green building requirements.
• Consultants and Engineers: Assisting in equipment selection, performance verification, and ensuring system designs meet performance expectations.
• Facility Managers: Understanding product ratings based on verified data helps optimize HVAC system operations and energy usage.

The amendment supports improved consistency in test reporting and performance assessment, contributing to better product reliability, energy efficiency, and consumer trust.

Related Standards

Professionals using ISO 13253:2017/Amd 1:2020 may also find the following international standards relevant:

• ISO 5151 – Air conditioners, liquid chilling packages and heat pumps with electrically driven compressors - Testing and rating for performance
• ISO 13256 – Water-source heat pumps - Testing and rating for performance
• ISO/IEC Directives Part 1 & 2 – Procedures and editorial rules for the preparation and publication of ISO standards
• EN 14511 – Air conditioners, liquid chilling packages, and heat pumps - Testing and rating for performance (European equivalent standards)

Summary

ISO 13253:2017/Amd 1:2020 amendment enhances testing precision and performance rating reliability for ducted air-conditioners and air-to-air heat pumps. By clearly defining testing tolerances and conditions, it enables fair, transparent, and internationally recognized performance assessments. This contributes significantly to advancing HVAC technology efficacy, environmental standards, and global market fairness.

For further details, users should consult the full document available through ISO or their national standards bodies.