I have to agree, this is such a simple idea whose time came so long ago, it's come all the way back around.
Simple summary... when it's cold outside, use the cold air to cool your fridge (walk-ins only, not sure if it could be adapted for regular fridges as well). Genius.
In my recently purchased house, the first in Seattle I've ever owned with an Air Conditioner btw, I was noticing how great the disparity in heat there is between the top floor and the basement. Yesterday it was in the high 80s and upstairs was practically a sweathouse, while in the basement I practically had to put on a sweater. Smartly, the designers only put the AC on the top floor. Smart.
Anyhow, to this invention, I have always been astounded with how inefficiently our appliances and houses have generally been designed, because they try really hard to split up temperatures. Take your average refridgerator... you know that defrost setting? That's actually a mini heater in the walls of the fridge. Which basically means in the coldest part of the fridge (the freezer) you have a mini heater cancelling out the effect. Or in the winter, you have cold outside, then warm inside (through heating) then cold in your fridge (through electric cooling). I thought this invention is a nice way to minimize that redundant work, without having to put your milk outside in a snowbank..
