This document applies to air-to-air air conditioners and heat pumps.
This document deals with test methods, test conditions, required measurement and calculation methods for determining capacity ratings and seasonal performance factors for heating and cooling including native control evaluation while minimizing the discrepancy between rating seasonal efficiency and average field performance.
This document provides specific requirements for load-based testing and/or CVP (standard loading, required measurements, calculations, and controls).
PROJECT
ISO/DIS 21280
40.20
DIS ballot initiated: 12 weeks
Sep 2, 2026
To view the full content, you need to register or to log in to your account by clicking on the "Log in" button