Changes to H1 Energy Efficiency— What this means for you

Date: 2 Jun 2022

To help achieve New Zealand's climate change goals of becoming carbon neutral by 2050, changes have been made to H1 of the Building Code regarding energy efficiency for all housing and buildings up to 300m². This is because windows remain a large contributor to heat loss in a home insulated to its current requirements— shown by the below diagram. 

The figure below shows the first change being made— that New Zealand climate zones will be increasing from three to six (see below for the zone applicable to you). 


There will be new compulsory insulation requirements regarding the thermal resistance of the glass—otherwise known as the R-value as well as the inclusion of Solux-E and thermally-broken glass. 


For zone one and two, these requirement changes will be actioned over two stages (dated November 2022 and November 2023). While for the remaining client zones, the change will take place on one date— November this year. 

Zones 1 & 2

3rd November 2022

  • R-value: 0.37
  • APL Residental Suite (non-thermally broken) & AGP Solux-E® double glazing

2nd November 2023 

  • R-value: 0.46
  • APL ThermalHEART Suites & AGP Solux-E® double glazing

Zones 3 & 4

3rd November 2022

  • R-value: 0.46
  • APL ThermalHEART Suites & AGP Solux-E® double glazing

Zones 5 & 6

3rd November 2022

  • R-value: 0.50
  • APL ThermalHEART Suites & AGP Solux-E® double glazing

Our glass suppliers at AGP state that they anticipate no issues with suppling high-quality, high-performance glazing units to the standard required. Bryce Imms is an expert in the industry and our supplier of state-of-the-art glass from AGP. He states that the Solux-E product "is New Zealand's most advanced double-glazed Low-E technology, that has been designed specifically for New Zealand conditions to deliver the best all-round performing residential low-E glass". 

Learn more about the required ThermalHEART Suites.

Learn more about the required Solux-E glazing

If you have any questions regarding the upcoming changes— please don't hesitate to be in touch. 

 
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Changes to H1 Energy Efficiency— What this means for you