Sustainability Trust

Sustainability Trust is a Wellington social enterprise with over 20 years of work on energy efficient homes, and all profits go back to community programmes. It installs heat pumps, hot water heat pumps, central heating, ceiling and underfloor insulation, ventilation, LED lighting and EV chargers. Single room heat pump installs typically take 4 to 5 hours, while multi-room or ducted setups can take 1 to 2 days. It is a registered Warmer Kiwi Homes provider, with free assessments and help sorting out funding for eligible households. In-person access is next to the Te Aro Zero Waste Centre, Wednesday to Saturday only. Rated 4.7 from 241 Google reviews, 210 of them five stars and 9 one star. It also runs the Wellington Curtain Bank and the Toast Electric ethical electricity service, and lists funding of up to 100% for heat pumps in some areas.