View single post by hvacdrd
 Posted: Tue Jun 19th, 2007 03:18 am
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hvacdrd



Joined: Wed Aug 16th, 2006
Location: Michigan USA
Posts: 1186
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 Here is what I came up with converting to US gallons for oil & LP @ $3.02/gal (the LP price seems high, around here it is less than oil)

Oil = $2.69/ therm output at 80% efficiency (125,000 input =100,000 output)0.89gal

LP = $3.65/ therm output at 90% efficiency (111,111 input = 100,000 output) 1.21gal

Electric = $3.08/ therm output at 100% efficiency (29.3KwH)

Heat pump = $1.02/ therm output at COP=3

For a reference, in Michigan my total usage for heat, hot water & a gas dryer was 981 therms.

I'll have to do some homework on the heatpump option,  it looks like design temp for your area(14'F to -22'F) is about 10'F lower than southern Michigan. Given the fact that you plan to have a wood stove I think it would be worth looking at.



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