"Clot" wrote:

I suspect that the
overall impact is minute compared to actually opening the door and keeping
it unduly open!

I know.... you are right

I'm just an "optimizer" by nature and cant help myself!

But....... if there are 400 million people in the USA
and say 100 million homes.... and if we save just ONE
watt in the fridge bulb.... that is 100 million watts
saved!!