Quote:
Originally Posted by FlyingScot
I understood that, and I asserted that he will be way ahead of oil if he runs mini splits through the entire winter, and never flips over to oil. There is a mountain of info supporting this, including the link posted above by Doug, and a fair number of forum members who have experienced it. If an oil fan is able to show data that shows that a significant number of days are better for oil and therefore you should have two entire systems, I look forward to seeing it.
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Yes, that was my question: what is the break pojnt for efficiency? I've now done a minimum of reading (need to do more) but it does look like the minis will be efficient in temps well below 30. Will use oil more for backup, and fire place for joy!