A while back, we brought you the super-efficient .1 kWh/day fridge. It is quite an impressive machine. But, what if we said there is something even better? What if we said it is not only fairly cheap, but doable to your existing upright fridge? Thats right, it just keeps getting better and better.
Of course, there is a small catch. There is always a catch. If there wasn’t everyone would be doing it, right? Well, in this case, the outdoor temperature needs to be below 40 degrees F. It needs to be that cold out because the fridge uses outside air to cool itself down. The only thing that powers the fridge is two (possibly one depending on design) small computer fans to blow cold air into the fridge.
For a fair amount of people, this means you can cool your refrigerator for next to nothing for a decent part of the year. Add this to the fact that a refrigerator is a fairly large energy hog (1-2 kWh per day on average) and you have some pretty solid savings. Also, since your fridge won’t have to run the motor/compressor for months at a time, it should also last a fair amount longer.
So, check out the Build an ultra efficient fridge instructable and let us know what you think.