Not really. It doesn't get down to absolute zero, at least in my
You are concerned with the heat flow out of your house. Heat flow is
proportional to the DIFFERENCE in termperatures, inside and outside.
And it's inversely proportional to the R-factor of the walls.
In a previous house I wired an old electric alarm clock across the
circulator pump so I could measure how much the system was producing
heat for the house. The result was that only loose correlation with
the degree-days. Wind seemed to have a much bigger effect.
Some degree day monitoring systems I've seen do attempt to take wind
One I saw looked like a birdhouse on a pole. It had a small electric
heater and a remote reading thermometer inside it.
You can figure out the rest.
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