I guess my house could be considered a passive house, in that there are no systems in place for heating or cooling it. My inside temperature is always the same as outside temperature, give or take maybe two or three degrees F.

Of course on a really cold day where I live the temperature will drop all the way down into the 60's. And days when the temperature gets as high as the mid-80's are rare.

Not bad for a house that is more than 60 years old.

tanstaafl.