I have an oil furnace as a backup, but my oil furnace pooped out and the heat pump kept working during the recent cold snap. I think it's because they ran the

I have an oil furnace as a backup, but my oil furnace pooped out and the heat pump kept working during the recent cold snap. I think it's because they ran the pipe for the forced hot water from the oil furnace right up against the wood timbers of the foundation in contact with the outside, and they froze in that spot. So I wound up just running the heat pumps.