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400L Heat Pump - Sydney Northshore - FREE! 19 munter 4 years
Solar Rex Solar Hot Water - U-SHE 23 DragonSolar. 4 years
Conductive Ink for solar gain 4 Morbo 5 years
Heating in Tasmania - 2 48 alburdon 6 years
Sealed gutter systems - 2 34 Diver 7 years
Plastic pipe for economical solar HW plumbing 11 bazzle 7 years
Energy Efficient DIY Light Fittings 4 Greg C 8 years
Blackout Beaters 10 Johnnojack 8 years
designing a cool, dry pantry for fresh food storage 2 Ueee 9 years
Has anyone got any experience with building a solar pre-heater 13 120ThingsIn20Years 11 years
DIY Solar/PV/wind energy 3 rockabye 12 years