Motu Research led the Warmer Kiwis Study, which focused on the heat pump component of EECA’s Warmer Kiwi Homes 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.
This was, at the time, the most comprehensive study of heat pump effectiveness in Aotearoa New Zealand homes.
We worked directly with a group of about 160 homeowners, who received a grant for an energy efficient heating device. Motu Research collected new data on peoples’ health and wellbeing in homes, the indoor environment in homes (including temperature and humidity) and electricity consumption. We did this to investigate the actual improvements in homes achieved through EECA’s programme.
Motu Research’s work concluded using heat pumps in homes results in warmer and drier living areas through winter, and households save on electricity bills. Overall, the study’s findings show the Warmer Kiwi Homes programme is effective.
The study began in 2021. Interim results from the first winter of the study were published in January 2022. We published the final results in early 2023.
With the completion of the Warmer Kiwis Study, we have archived all the data collected in the evaluation. We welcome applications to use the data for research purposes. The data is held on Motu’s secure server as four separate stata files (one for each region of the study). Researchers are welcome to apply to Motu Research for access to the data.
A researcher's application should be headed WKS Data and be sent to email@example.com. The application should outline the research topic and methodology, any ethics approvals gained by the researchers, and who will be involved in the research. If approval is granted to access the data, we will require the data to be held in a confidential manner by the researchers and not supplied to any outside party.