Quote:
Originally Posted by Dad207
My 1700 sq. ft rancher, average insulation, has both oil-fired baseboard radiators, and Mitsubishi mini splits we installed a couple of years ago to handle a/c as well as heat in the shoulder seasons, using oil in the coldest months. At what point does one cross the electric/oil efficiency line? I was told average 30F degrees, but it seems like folks are using the minis to lower temps. Thoughts?
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This "line" is in part based on older generations of mini splits not working below 30 or so, and in part based on oil industry misinformation. Today's mini splits can heat a well insulated home down to -10 or so. If you run modern mini splits every day, you will see a dramatic reduction in your energy bill.
It might be nice to have a wood or gas stove if you're worried about -15 or a power failure, but you do not need an oil heater at all.