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Specifies a simple means of referring to common refrigerants instead of using the chemical name, formula, or trade name. It also establishes a uniform system to be used in assigning the proper reference number and classification to refrigerants; the system for refrigerant classification is defined and physical data of common refrigerants listed.

This Standard provides an unambiguous system for assigning designations to refrigerants. It also establishes a system for assigning a safety classification to refrigerants based on toxicity and flammability data, and provides a means of determining the refrigerant concentration limit.

Specifies requirements for safety and environmental aspects in relation to operation, maintenance and repair of refrigerating systems and the recovery, reuse and disposal of all types of refrigerant, refrigerant oil, heat transfer fluid, refrigerating system and part thereof.

Contains Deemed-to-Satisfy Provisions that are considered to be acceptable forms of construction that meet the requirements for complying with Parts H1 to H8 of NCC Volume Two.

Assists in understanding the Verification Methods for building in bushfire prone areas in NCC Volumes One and Two (G5V1 in NCC Volume One and H7V2 in NCC Volume Two).

Assists in understanding the energy efficiency provisions in NCC Volume Two that apply to houses.

Assists in understanding the condensation requirements in NCC 2022 Volumes One and Two

Assists in understanding the indoor air quality (IAQ) Verification Methods in NCC Volumes One and Two (F6V1 and F6V2 in NCC Volume One and H4V3 of NCC Volume Two).

The Nationwide House Energy Rating Scheme, or NatHERS, is being expanded to include Whole of Home assessments and ratings to support the proposed National Construction Code energy efficiency requirements for residential buildings in 2022; the changes will help households improve a home's energy efficiency and reduce energy use, which provides a range of benefits including lower energy bills, improved comfort and health for occupants, and reduced carbon emissions.

NatHERS compliance pathway for energy efficiency.