Permaculture is a basis for design that mimics "the patterns and relationships found in nature". When applied to home temperature control, this means using passive solar for heating and night-flushing for cooling.

In this video, permaculture homeowner Mark Feichtmeir shows us how he keeps his home in Kenwood, California between 68 and 78 °F without any AC.

We also have videos of Mark's extensive solar array and his smart home.