Whole of Home in Practice: New Requirements for Energy Assessors

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Price

A$99.00

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Course Content

I. Introduction (5 minutes)
II. Learning Objectives (2 minutes)
III. Module 1: Expanded Scope of NatHERS Whole of Home (15 minutes)
IV. Module 2: Defaults, Assumptions, and Documentation (12 minutes)
V. Module 3: When to Re-Rate? (8 minutes)
VI. Module 4: Modelling Fixed Appliances in Practice (15 minutes)
VII. Summary and Key Takeaways (3 minutes)
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By the end of this session, you’ll understand the expanded scope of Whole-of-Home (WoH) assessments, which go beyond thermal performance to include heating, cooling, hot water systems, solar PV, battery storage, and plug loads. You’ll know how to apply default values and document assumptions in line with Section 12 of the NatHERS Technical Note to ensure compliance. The session will help you identify when a re-rating is required due to design or appliance changes and how to respond appropriately. You’ll also gain the practical skills needed to model fixed appliances accurately using NatHERS-accredited software. Ultimately, you’ll leave with greater confidence to deliver assessments that are compliant, traceable, and audit-ready.

Learning Outcomes

  • Understand the full scope of NatHERS Whole-of-Home assessments, including thermal performance and fixed appliance modelling.
  • Confidently model heating, cooling, hot water, solar PV, battery storage, and plug loads using approved software tools.
  • Accurately apply default values and document assumptions in line with Section 12 of the NatHERS Technical Note.
  • Interpret and apply Whole-of-Home efficiency factors across different climate zones to ensure realistic performance modelling.
  • Identify when changes to design or appliances require a re-rating and understand how to manage that process.
  • Maintain compliance through proper documentation, data retention practices, and clear communication with builders and designers.

This ensures that CPD efforts align with professional regulatory requirements.

This CPD provides general guidance on professional responsibilities and documentation practices. It does not constitute legal advice or replace project-specific contractual or statutory obligations.

  • CPD Points: 1 Formal CPD Point
  • Duration: 1 hour
  • Certificate Upon Completion
  • Difficulty Level: Intermediate
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Compliance and Accreditation

Framework/Body

Relevant Sections

Focus Areas

National Construction Code (NCC 2022)

Volume Two, Section 13.6; ABCB Housing Provisions Part 13.6; J3D14

Whole-of-Home assessment scope, performance standards, default assumptions, software compliance using Chenath 3.22/3.23

NatHERS Protocols

Technical Note Section 12; Software Protocols; Defaults and Re-rating Guidance

Modelling heating, cooling, PV, batteries, plug loads; use of defaults; documentation and data retention; triggers for re-rating

ABSA CPD Competency Area

Professional Knowledge & Application; Reporting & Communication

Application of new assessment tools, documenting assumptions, assessing compliance pathways, communicating changes with builders

Building Designers

NCC compliance understanding; fixed appliance modelling; appliance substitution protocols

Modelling system performance; understanding compliance impacts of product selection and default usage

NSCA 2021 (Architects)

PC20, PC21, PC28, PC31, PC33

Regulatory alignment; sustainable design; environmental performance metrics; documentation and lifecycle carbon considerations

Engineers Australia (Stage 2)

Technical Proficiency; Practical Application of Engineering

Simulation accuracy, system energy load evaluation, modelling for compliance, appliance lifecycle analysis

Licensed Builders (State CPD)

NSW Code of Conduct Clause 16 (CPD); Re-rating triggers; As-built system variation handling

Changes requiring reassessment; builder communications; certifier readiness

Building Surveyors

NCC 2022 Part 13.6; Verification and Certification Standards

Verifying modelling inputs, assessing assumption legitimacy, checking compliance of fixed systems

This session is designed for

Energy Assessors
Architects
Building Designers
Builders
Building Surveyors

What’s Included

This course covers the practical application of the updated NatHERS Whole-of-Home (WoH) requirements under NCC 2022 for energy assessors. It explores the expanded assessment scope, which now includes not only the thermal envelope but also fixed appliances such as heating and cooling systems, hot water units, solar PV, battery storage, and plug loads. You’ll learn how to apply default values and document assumptions correctly, when and how to conduct a re-rating, and how to model systems using tools powered by the Chenath 3.22 and 3.23 engines. The course also covers regulatory alignment with ABCB Housing Provisions, proper data retention, and effective communication protocols with builders and designers to ensure compliance throughout a project’s lifecycle. In short, it provides assessors with the skills, tools, and knowledge needed to deliver accurate, audit-ready, and NCC-compliant Whole-of-Home energy assessments.

  • A 1-hour video session covering NCC-aligned strategies and real-world case studies.
  • An interactive quiz to test and reinforce knowledge.
  • An audio summary version via NotebookLM for flexible, on-the-go learning.
  • A downloadable certificate of completion for CPD compliance reporting.
  • Centralised CPD tracking dashboard to support audits and personal recordkeeping.
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Why Take This CPD Session?

Ensure compliance with NCC 2022 by mastering the expanded scope of Whole-of-Home assessments under NatHERS, including fixed appliances and plug loads.

Avoid costly errors and rework by learning when re-rating is required and how to document assumptions and defaults in line with Section 12 of the NatHERS Technical Note.

Enhance your practical skills in modelling appliances and interpreting software outputs using accredited NatHERS tools powered by the Chenath engine.

Professional development is an investment in career growth and regulatory compliance. Take the next step today.

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