H1 Energy efficiency support
- Valid from
- Information provider
- BRANZ Limited
- Information type
- Technical guidance
This page contains useful information and tools to help meet or exceed the performance requirements of Building Code clause H1 Energy efficiency.
The Ministry of Business, Innovation and Employment (MBIE) is changing the minimum thermal performance requirements under New Zealand Building Code clause H1 Energy efficiency. From 3 November 2022, anyone using Acceptable Solution H1/AS1 and/or Verification Method H1/VM1 for building consent applications can no longer use the 4th edition documents but must use 5th edition, Amendment 1.
Where building consent applications for housing are submitted before 1 May 2023, however, the roof, wall and floor minimum construction R-values can be equivalent to the previous (4th edition) requirements. All window and door construction in new housing has a 2-step increase. The first step is a minimum R-value of R0.37 from 3 November 2022.
BRANZ has developed tools and resources to meet or exceed the new requirements of H1/AS1 and H1/VM1 5th edition, Amendment 1.