Acceptable Solutions and Verification Methods For New Zealand Building Code Clause H1 Energy efficiency

Acceptable Solution H1/AS1 Sixth Edition provides a compliance pathway for meeting some of the energy efficiency requirements of Clause H1 of the New Zealand Building Code for all housing, and other buildings up to 300 m². The document covers provisions for the building thermal envelope 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 sixth edition.

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.

Verification Method H1/VM1 Sixth Edition provides a compliance pathway for meeting some of the energy efficiency requirements of Clause H1 of the New Zealand Building Code for all housing, and other buildings up to 300 m². Specifically, the document covers provisions for the building thermal envelope, which includes the modelling method.

Verification Method H1/VM2 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. Specifically, the document covers provisions for the building thermal envelope, which includes the modelling method.

H1 Energy Efficiency Verification Method H1/VM3 First Edition Amendment 1 provides a compliance pathway for meeting the energy efficiency performance requirements of Clause H1.3.6 of the New Zealand Building Code, specifically for HVAC systems in commercial buildings. The scope of the document covers energy efficiency provisions for air conditioning and mechanical ventilation systems, including controls, fans, ductwork, pumps, pipework, space heating, chillers, unitary air conditioning equipment, heat rejection equipment, energy monitoring, and maintenance access. It is suitable for use in commercial buildings where HVAC systems are a significant component of energy use. The amendment introduces references to the Building Product Specifications for pump motor efficiency and includes minor amendments to improve clarity, correct formatting, and update cross-references and terminology.

NZS 4218:2009 replaces the 2004 version in H1/AS1 and H1/VM1. Overall the requirements in H1/AS1 do not change, but foil insulation is no longer within the scope of H1/AS1.

Cited content in this document can be found on the Building CodeHub website.

All of the Acceptable Solutions and Verification Methods relating to H1 are contained in one document.

• Defines the Building Performance Index (BPI) in relation to a building.
• H1/VM1 provides a verification method for the building thermal envelope and the modelling of housing and small buildings, and other large buildings. It gives replacement tables for certain minimum insulation/R-values and a means of determining thermal resistance.
• H1/AS1 to be used for housing, communal residential, communal non-residential and commercial buildings.  It gives replacement tables for minimum insulation/R-values and a means to comply for control of airflow, solar heat gain, hot water systems and artificial lighting.

Defines the Building Performance Index (BPI) in relation to a building.

Provides verification methods and acceptable solutions for the building thermal envelope. Applies to housing, communal and commercial buildings. Modelling of housing and small buildings, and other large buildings. Determines insulation/R-values by building size, climate zone, construction method and building classification.