Robin <> wrote:

> I have an electric heater that can be controlled to within 1/10 of a
> degree centigrade . . .

That is remarkable. That is a laboratory grade thermostat.

> The only explanation I can think of is that the house is well insulated
> and has a long time constant, so that early in
> the morning the walls are still warm from the previous afternoon, while
> the air in the room is cool, thanks to contact
> with the cooler glass window, resulting in the thermostat registering a
> low temperature . . .

That is interesting. Put a thermometer near the windows. Get an IR camera!
(Borrow one . . . they are expensive.)

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