On 03/05/2015 02:47 PM, trader_4 wrote:


Based on your earlier posts: current bill = $210 which is 85% of you
previous bill of same month last year, so previous bill ~= $247, so saving
approx $37/month; but you wrote that this was a high-heat month, so
gestimating an average saving of $30/month your payback will be
approgimately 120 months. That's pretty good.

120 months of winter works out to ~24 years, 120/5 months = 24 years.
That isn't a very good value proposition.




There is no way the payback will be 24 years. I figure ten at the very most.

In the cold months the difference will be more than $30 and in Wisconsin
there are more than five cold months a year.

Heck the furnace can be in use as much as 8 or 9 months a year.