Residential research, publications and resources
Research papers and resources covering insulation, ventilation and energy efficient homes. Documents are ordered by publication date, with the most recent listed first.
BRANZ House Condition Survey 2015-2016: Analysis of energy efficiency data
EECA commissioned report on the energy efficiency characteristics of hot water, lighting and appliances in New Zealand homes. This report is based on analysis of the 2015-16 BRANZ House Condition Survey data.
Big benefits from reducing peak energy use
EECA-commissioned report shows cutting residential peak electricity demand would limit the need for more electricity infrastructure spending, and reduce emissions.
Energy efficient lighting uptake report
EECA commissioned research in November 2017 to understand the uptake and role of energy efficient lighting in New Zealand homes. The research also sought to measure barriers towards lighting options, and understand shifts in perceptions options among New Zealand consumers.
List of accepted insulation products
EECA maintains this List of Accepted Insulation Products that may be installed under the Warm Up New Zealand: Healthy Homes programme and under voluntary targeted rate schemes of local councils.
New Zealand Standard for installing insulation (NZS 4246:2016)
This standard provides guidance for the correct installation of insulation products by installers and consumers to achieve the intended thermal performance in buildings without compromising the durability and safety of insulation or building elements and the health and safety of installers and building occupants.
List of accepted heating products
A list of clean heating products that are eligible for funding under various local government initiatives.
Quality and audit manual and guidelines
EECA aims to deliver quality installations for the government’s Warm Up New Zealand: Healthy Homes programme and supports council insulation programmes with quality and audit arrangements.
Insulating your home during earthquake repairs - EQC
If you're in EQC's Canterbury Home Repair Programme (CHRP), you may be able to have insulation, including wall insulation, installed during the repair process. This information sheet provides some key points to consider if you are interested in insulating during your EQC repairs.
Insulating your home during earthquake repairs – Southern Response
If you live in Canterbury and Southern Response are managing your earthquake repairs, you may be able to have insulation, including wall insulation, installed during your EQC repairs. This information sheet provides some key points to consider if you are interested in insulation during your Southern Response/Arrow managed repairs.
Guide for retrofitting wall insulation
This guide provides best practice guidelines for retrofitting the most common types of wall insulation (blanket, segment, rigid and semi-rigid sheet) into framed external walls of existing houses. It is aimed at experienced insulation installers who are familiar with the principles of Standard NZS 4246: 2006 (incorporating Amendment No. 1) Energy efficiency – Installing insulation in residential buildings.
Heating and cooling potential of roof space air: implications for ventilation systems – final report
Report prepared for EECA by Warren Fitzgerald, Dr Inga Smith, and Muthasim Fahmy - Department of Physics, University of Otago
This report summarises research carried out at the University of Otago into roof space temperatures in New Zealand houses. New Zealand’s most common types of residential ventilation systems are positive pressure ventilation systems that draw air from roof spaces. The heating and cooling potential of roof space air using positive pressure ventilation systems was the focus of this research.
Little Greenie - get the facts
Report prepared by Verney Ryan for Little Greenie Design and Build, The Hikurangi Foundation and the Energy Efficiency and Conservation Authority (EECA).
This report outlines some of the key features, costs and benefits of the Little Greenie house built in Golden Bay by Lawrence McIntyre. The dwelling, which has achieved the highest energy efficiency rating in New Zealand under EECA’s Home Energy Rating Scheme (HERS), provides an extremely warm, comfortable and low cost living environment. This report provides an overview of energy and thermal performance within the house. This report has been commissioned by the Hikurangi Foundation, the Energy Efficiency and Conservation Authority and Little Greenie Design and Build.
Power from the people: a guide to micro-generation
This guide has been produced by EECA in response to ongoing requests for information on micro-generation from the public. It is intended to provide guidance to both home and business owners who are interested in generating their own electricity, but need more information before going ahead.
Off shore and off the grid: generating energy on the Department of Conservation's off shore islands
To help demonstrate the potential roles, benefits, and costs of off-grid generation which
uses renewable energy technologies such as photovoltaics (solar), micro wind turbines,
and micro hydro turbines, EECA has undertaken a review of a number of significant off-
grid generation systems installed by the Department of Conservation (DOC).
The purpose of this study is to provide a comparative analysis of five major renewable
energy upgrade projects that have been installed on islands maintained by DOC so that
the economics can be better understood and that the lessons learnt can be used by
other potential users of stand alone power systems (SAPS).
- Off shore and off the grid: generating energy on the Department of Conservation's off shore islands [PDF 1.7MB]
Designing comfortable homes – second edition
This practical, plain English guide is for anyone wanting to build a comfortable, energy efficient home. It has everything a New Zealand homeowner needs to understand the basic principles of passive solar design – the key to comfort and reduced energy use in New Zealand homes. The premise of this book is that homes can be naturally warm in winter and cool in summer – provided appropriate combinations of glass, thermal mass and insulation are used.
Investigation into the performance of urea formaldehyde foam insulation
Study Report funded by BRANZ 2010 and prepared by I Cox-Smith, M.E.Hearfield, M.S Jones & N.J. Marston
Although Urea Formaldehyde Foam Insulation (UFFI) has been installed in New Zealand houses for over 25 years, there have been a number of unanswered questions regarding thermal performance, durability, installation and shrinkage, where independent research has either not been completed or is now decades old and may no longer be relevant to products currently available in New Zealand. The work outlined within this research project aims to address a range of questions over the performance and suitability of foam insulation in New Zealand timber-framed houses, which have never been fully investigated.
Review of the heat pump water heating industry in New Zealand
A review of the heat pump water heating industry in New Zealand, including suppliers, installation, regulatory requirements, standards, barriers and other issues.