Does insulation excite you? No? Well how about a house with zero heating bill? If you’ve been reading Inhabitat for a while there’s a good chance you know what a passive house is. These super insulated, air tight, energy-efficient homes come in all shapes and sizes – but do you know why they’re so efficient? They don’t leak heat – which means they don’t need much heating to maintain a comfortable indoor climate. Take a look at the infographic above, which compares the heat gain and heat loss for passive, modern, and leaky houses, and you can read more at Shrink That Footprint.

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