H1 - Energy Efficiency Update.  Effective 1st May.

H1 Updates

H1 Update -Background

The Ministry of Business, Innovation and Employment (MBIE) have updated requirements for H1 - Energy Efficiency, this is MBIE’s biggest energy efficiency update in over a decade which includes significant changes to the performance requirements of the building envelope. The purpose of these changes is to improve the efficiency of buildings in New Zealand.

Effective and transitional dates

The updates became effective from November 2021. However a transitional period has been granted for the building industry to prepare themselves. Roofing and wall cladding must comply with new requirements for all consents after 1st May 2023.


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