Wet1 said:I've done the calculations using heating degree days and found the difference from one year to the next is basically insignificant.
https://www.hearth.com/econtent/index.php/forums/viewthread/37220/#397240
Useful. I should review some of the earlier comments in this forum before I post; they often have information worth checking out. Unfortunately I personally tend to re-invent the wheel. And to your point, it does make sense that the costs should average out over a few years.