This document sets out the requirements that must be followed when conducting a Home Energy Rating (NatHERS) for new homes assessment.
New Home
Technical guidance & case studies
The Technical Note (Tech note) provides a standardised approach to rating a dwelling. It details the requirements that must be followed for a NatHERS assessment in regulation mode when demonstrating compliance with the NCC.
Tips for navigating the Technical Note and Handbook versions:
- NCC 2022 requirements = Chenath Engine v3.22 or later = latest versions of Technical Note and Handbook.
- NCC 2019 requirements = Chenath Engine v3.21 = June 2019 versions of the Technical Note and Handbook.
- You may find it useful to familiarise yourself with corrections and clarifications provided in the latest versions.
Documents
NatHERS Technical Note - October 2024 version is for use with software using Chenath engine V3.22 and V3.23 only. Use the current version to comply to NCC 2022 requirements.
Technical Note for new homes - October 2024
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NatHERS Technical Note 20241023.pdf
(1.13 MB)
Previous versions
NatHERS Technical Note - May 2024Â
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20240501 NatHERS Technical Note.pdf
(592.57 KB)
NatHERS Technical Note - October 2023
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NatHERS Technical Note 20231023_0.pdf
(583.16 KB)
NatHERS Technical Note - September 2023Â
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NatHERS Technical Note 20230929.pdf
(582.32 KB)
NatHERS Technical Note - September 2022
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NatHERS Tech Note 20220901.pdf
(562.81 KB)
NatHERS Technical Note - June 2019
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NatHERS Technical Note - May 2019
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NatHERS Technical Note 1.2 - October 2014
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NatHERS Technical Note 20141001.pdf
(1.09 MB)
Zoning guide for the Technical Note 1.2 - 2014Â
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NatHERS Technical Note 1.1 - 2013
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Technical%20Note%201.1.pdf
(804.54 KB)
NatHERS Technical Note 1 Addendum 1.2013: The Treament of Waffle Pods
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Technical%20Note%201.1%20Addendum.pdf
(514.21 KB)
NatHERS Technical Note 1.2, Assessor Questions and Answers
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