Warmer Kiwis Study

WebBanner WKS

EECA Horizontal Pos


Motu Research is leading the Warmer Kiwis Study, which focuses on the heat pump component of EECA’s Warmer Kiwi Homes programme. We are working directly with a group of about 160 homeowners, who have received (or will receive) a grant for an energy efficient heating device. Motu Research is collecting new data on peoples’ health and wellbeing in homes, the indoor environment in homes (including temperature and humidity) and electricity consumption. We are doing this to investigate the actual improvements in homes achieved through EECA’s programme.


The study began in 2021. Interim results from the first winter of the study were published in January 2022. We will publish the final results in early 2023.


Warmer Kiwi Homes is an EECA programme aimed at making homes warmer, drier and healthier. EECA does this by offering grants to lower-income homeowners for home insulation and/or an efficient heater.


EECA has commissioned Motu Research to investigate the impact of heat pumps in homes with a heat pump installed under the EECA Warmer Kiwi Homes programme. Motu Research is working to determine if the health and wellbeing of the household improves because of using heat pumps. Our evaluation is also growing the public evidence base about what works best to make homes warmer, drier and healthier. 


Contact us

You can contact us at warmerkiwis@motu.org.nz or phone 0800 668869 (0800 MOTUNZ).


Warmer Kiwis Study: Phase One

August 2020

Download the report

EECA commissioned Motu Research to do Phase One of the evaluation. Phase One reviewed current evidence supporting the Warmer Kiwi Homes programme and proposed an approach for the phase two evaluation.


Energy Efficiency and Conservation Authority