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Energy efficiency

Building Code Clause H1 Energy Efficiency Acceptable Solutions and Verification Methods (Amendment 2) from 10 October 2011

Clause H1 Acceptable Solutions and Verification Methods were reprinted on 10 October 2011 to remove transition provisions that no longer applied; correct text errors; and reprint the Building Code Clause H1 to include changes made in 2008-09.

The requirements for Clause H1 are unchanged in Amendment 2.

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Changes to hot water and HVAC Building Code provisions from 1 February 2009

New Building Code provisions for the energy efficiency of HVAC (Heating, Ventilation and Air-conditioning) systems, and revised provisions for hot water, came into force on 1 February 2009. There are currently no Acceptable Solutions or Verification Methods published for the new Building Code provisions.

Guidance

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Solar water heating from 1 December 2007

An Acceptable Solution for installing solar water heaters, G12/AS2, came into effect on 1 December 2007. It outlines the system and installation features needed to meet Building Code requirements.

Guidance was published in December 2009, which explains some limitations on the use of G12/AS2 and describes alternative approaches where solar systems are outside the scope of G12/AS2.

Guidance

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Insulation for housing from 31 October 2007

Changes to the Building Code Clause H1 and associated Acceptable Solutions and Verification Methods came into effect progressively throughout New Zealand, between 30 October 2007 and 30 September 2008.

The changes meant that most new houses will have double glazing and higher levels of wall and roof insulation.

Guidance

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Lighting in non-residential buildings from 31 October 2007

The Acceptable Solution for the energy efficiency of artificial lighting, H1/AS1, now cites the New Zealand Standard NZS 4243.2 2007. From 31 October 2007, the new requirements apply to artificial lighting in commercial and communal non-residential buildings greater than 300 m2.

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