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H1/AS2, 2nd edition


Concurrent version: Effective on 27 November 2025

Acceptable Solution H1/AS2 Second Edition provides a compliance pathway for meeting some of the energy efficiency requirements of Clause H1 of the New Zealand Building Code for buildings other than housing that are greater than 300 m². The document covers provisions for the building thermal envelope, lighting and hot water systems. For the thermal resistance of the building thermal envelope, it includes the calculation method. The schedule method has been removed from this second edition.

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This information is published by the Ministry of Business, Innovation and Employment’s Chief Executive. It is a general guide only and, if used, does not relieve any person of the obligation to consider any matter to which the information relates according to the circumstances of the particular case. Expert advice may be required in specific circumstances. Where this information relates to assisting people: