Quote:
Originally Posted by FlyingScot
As others have pointed out, it is not the cost per kWh, it is how the fuel is converted into heat. Electric mini split heat pumps are WAY cheaper than oil. In many cases, less than half the cost. Every home is different, of course. A Mitsubishi installer can do the math for your house to tell you annual savings and how long it would take you to pay for a system.
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I installed an NG condensing boiler from a standard boiler. I realized a 30% savings in fuel with the degree days calculated in. That put me just below the geothermal category on the Maine calculator. So yes it is how energy is converted. What the calculator does not show you is the efficiency of the heating appliance used in the calculation.