For those calculations, does an average cost per therm in my area of $1.33
seem reasonable to you?



Look at your utility bill, it should say exactly what the cost per therm is,
they may call it CCF. That number sounds a little high, but then it varies
by area and the cost has multiplied by several times in the last 10-15
years. I pay around $1.15 per therm, I still remember when it was closer to
33 cents.