Thermal Performance Assessors

Design Matters National is the largest organisation representing Accredited Thermal Performance Assessors (TPAs) in Australia. 

These Accredited professionals play an integral role in facilitating a more sustainable outcome in combination with design professionals to improve the energy efficiency of commercial and residential buildings throughout nationally.

Design Matters National is a NatHERS (Nationwide Home Energy Rating Scheme) Assessor Accrediting Organisation recognised by the Department of Environment and Energy and maintains optimum Accreditation education programs for TPA members.

The TPA dedicated helpdesk is available for members requiring assistance to navigate the technicalities of software to ensure informed and correct energy assessments.

We work closely with federal and state governments to advocate for, and ensure our members are supported to follow best practice and industry regulations. 

We have attached the NatHERS link of the new Assessors Handbook for you.

This is a useful publication which explains a number of previously unclear rules.

To view our Thermal Performance Assessor Code of Conduct, please click here - Thermal Performance Assessor - Code of Conduct

Learn about DMN’s Upskill Now CPD Course here - Upskill Now - Correctly interpret and model building elements 

To view our Thermal Performance Assessor Professional Development Guidelines, please click here – Thermal Performance Assessor Continuing Professional Development Guidelines 

To view our Quality Assurance and TPA Upskill Now procedure, click here - Quality Assurance Procedure 2021

Complaints against TPA's procedure

Thinking of becoming an accredited Thermal Performance Assessor with Design Matters National? 

There are many benefits to becoming an accredited Thermal Performance Assessor (TPA) with Design Matters National. Our Accredited Assessors are industry trusted and provided with ongoing support, education and communication to ensure our assessors are up to date with the latest industry and compliance requirements as well as participating in Quality Assurance processes which seek to maintain high level of integrity of assessors. As part of our membership you also receive a range of other benefits including:

  • Prompt technical support desk service.
  • Dedicated personnel to respond to and action matters impacting TPAs including support from our Technical Advisory Committee (TAC) and Energy and Sustainability Hub (ESH).
  • Access to tailored Continuing Professional Development
  • Weekly e-news communications keeping you up to date with the latest in policy and industry
  • Monthly Intersect publication for great feature articles and interviews
  • Opportunities to become involved in your industry through a range of activities or committees
  • Great member offers from our partners

Accreditation is for individuals. For corporate entities, applications must be made for each individual ensuring they meet the below criteria.

How do I become Accredited?

You will need the following:

  • Certificate of Completion and Academic transcript of qualification in either of the below including software tool/s trained in. Not yet commenced studies? Click here to learn more.
    • CPP41119 Certificate IV in Home Energy Efficiency and Sustainability (Thermal Performance Assessment);
    • CPP41119 Certificate IV in Home Energy Efficiency and Sustainability (Home Sustainability Assessment and Thermal Performance Assessment);
    • or CPP41212 Certificate IV in NatHERS Assessment (superseded)
  • Certificate of Currency for Professional Indemnity insurance coverage (Design Matters National recommends Webber Insurance who offer a product specifically for energy raters).
  • Membership with Design Matters National. Click here to join now. Note Annual Membership differs from Annual Accreditation.
  • Agreeance to read, understand and abide by the Design Matters National TPA Code of Conduct
  • If conducting accredited assessments in NSW you will additionally require BASIX

Ready to apply? Existing Members Apply Here Join Design Matters

Got any more questions? Contact us [email protected]