MathWhiz wrote:
Sure do. How much depends on the temperature differential. If the
basement is only a few degrees cooler, there will be little savings,
but if it is 20 degrees, you will retain more heat and save quite a
bit. .

I'm in New England. At times, it's 50 degrees cooler.

If your basement is 30º F colder, I reject my original answer and
suggest a good amount of insulation.

--
Joseph Meehan

Dia duit