wrote
dpb wrote:

Ductwork is all uninsulated in a full basement.
Well, DOH!!! Nice and toasty down there, I'd wager...

Standard procedure in a full basement is to use bare, uninsulated
ducts. I'm 100 miles or more north of Rochester in Ontario -
50,000/75000 BTU (2 stage) 80% efficiency furnace keeps my 1300 =/- sq
ft house warm for under $700 a year.AFAIK it has never kicked up to
high rate.The 600 sq ft basement is also heated.

Yup. Deliberate too. It's to protect the pipes from freezing.