Main living areas during the day are at 21c|69.8f after bedtime, 20c|68f
"It has been interesting to see how the heat gradually flows into the other non-heated rooms, on its way to the great heat sink in the sky..."
It does seem a little odd. So much heat going sideways. Maybe it's the light duty door?
We have one small bedroom that gets zero heat, it's door is closed 24/7.
But leakage and it's daily solar gain keep it above 50F all winter!
I checked the master bedroom temp this morning and it was 63F over in the far corner.
We keep our bedroom door closed until around midnight, when I go to bed.
So, it warms up for about 8 hours, before it's closed off again.
If it's a cold night, I'll crack the door open a few inches around 8 or 9 PM, to take the chill out.
My wife can't sleep if it's a little too warm (which feels cool to me), but many times,
I'll wake up cold, because she's taken all the blankets!
