Passive Solar Heating

I think this is truly the answer to eco building. It's so low tech, low maintenance, and extremely cost effective. All it takes is desgining the home/ building in a way to maximise the sun rays during winter months and shading out the sun during midday during in summer months. Oh and selecting building materials with high thermal mass (ability to absorb and hold heat). Ok there's a tad bit more to it, but like I said it's all in the planing phase, and I'd hire a specialist to calculate the figures and angles. Any way, I'll stop rambling and let the video do a much better job of explaining.

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