This Standard is an adoption, with national modifications, of ISO 13253:1995.

This Standard incorporates Amendment No. 1 (August 2002), No. 2 (May 2003), No. 3 (February 2006), No. 4 (October 2008) and No. 5 (October 2010). The changes required by the Amendment are indicated in the text by a marginal bar and amendment number against the clause, note, table, figure or part thereof affected.

This Standard has been adopted with national modifications and has been reproduced from ISO 13253:1995, Ducted air-conditioners and air-to-air heat pumps - Testing and rating for performance. This Standard does not contain a test method to determine the acoustic performance of ducted air conditioners.

The objective of this series of Standards is to promote high levels of performance and energy efficiency in ducted airconditioners.

A number of variations and additional requirements have been made in this Standard to the requirements of ISO 13253:1995. These variations and additions, which are necessary to take account of energy labelling and minimum energy performance legislation in Australia and New Zealand, are listed in Appendix ZZ and are indicated by a marginal bar set adjacent to the varied text.

The terms 'normative' and 'informative' have been used in this Standard to define the application of the appendix to which they apply. A 'normative' appendix is an integral part of a Standard, whereas an 'informative' appendix is only for information and guidance.

Statements expressed in mandatory terms in notes and footnotes to tables are deemed to be requirements of this Standard.

First published as AS/NZS 3823.1.2:2001.