Energy efficiency is at the heart of sustainable building. Passive design and reducing energy loss can help lessen environmental impact and is key to progressing towards a net-zero carbon economy.
See Environment and zero-carbon research for the work BRANZ does in this area.
Resources and tools
Findings from BRANZ energy efficiency research contributes to useful online resources, calculation tools, books, bulletins and seminars as well as standards and government policy. Topics include passive solar design, insulation, thermal bridging, glazing, space and water heating, and preventing heat loss.
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Level: The authority on sustainable building
Level will help you design and build homes that have less impact on the environment, are healthier and more comfortable and have lower running costs.
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H1 Energy efficiency support
Information to help demonstrate compliance with H1/AS1 and H1/VM1 5th edition amendment 1.
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BRANZ House insulation guide 6th edition
Construction R-values for common construction options for compliance under H1/AS1 and H1/VM1 5th edition.
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H1 Calculation method tool [full]
This tool automatically applies the calculation method of H1/AS1 5th edition amendment 1 and generates a results page that can be used to demonstrate compliance.
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H1 Schedule method tool
This tool checks for compliance of housing and small buildings with the schedule method of H1/AS1 5th edition amendment 1.
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Eco Design Advisors
Whether you are building a new home, renovating or looking for options to improve the comfort, health and performance of your existing home, you’ll find a wealth of information within this website.
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Services for manufacturers and distributors
Energy efficiency is assessed as part of BRANZ product testing. We can test the thermal efficiency of many building materials and elements, including thermal insulation.
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Appraisals
A BRANZ Appraisal is a robust, in-depth and independent evaluation of a building product or system to assess whether it is fit for purpose and meets Building Code performance requirements.
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CodeMark
CodeMark is a voluntary product certification scheme that provides an easily understood and robust way to show a building product, design or method meets the requirements of the New Zealand Building Code or the Building Code of Australia.
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