ISO 18107:2026

This document specifies:

• the test conditions and test methods for determining capacity and efficiency ratings;
• calculation methods for seasonal performance.

This applies to factory made, electric mains operated, variable refrigerant flow air-cooled air conditioners and air-to-air heat pumps with a rated capacity above 12kW for cooling or for heating if the product has no cooling function.

In this document, “heat pumps” means “air-to-air heat pumps” and “air conditioners” means “air-cooled air conditioners”.

This document establishes a method for determining global variable refrigerant flow (VRF) performance with annexes addressing specific national or regional deviations, such as regionally specific power or testing requirements.

This document does not apply to the testing and rating of:

1. individual assemblies not constituting a complete refrigeration system.