Originally Posted By: hybrid8
Originally Posted By: canuckInOR
You will eventually reach equilibrium with the ambient outside temperature, if you're not actively heating/cooling, and the ambient outside temperature remains constant.


The house will absorb some energy from sunlight, especially through windows, so it may be possible that the inside will never be quite the same temperature as the outside.

Right. I wasn't considering that, as I didn't really consider that as the outside environs remaining constant. I was thinking more in the same terms as physics' legendary "perfectly frictionless surface."