Give me your gas and electricity costs from your home. Not the total
bill but just the costs per unit to input into your calculator.
By the way, you should now be understanding why 35 may only be the
magic number in your home.
As a side note, that 8.8 degrees I came up with from your calculator
turns out to be 0.0 degrees when I put those same numbers from my home
into the economics calculator from the tempstar site I showed you.