In that case, I'd buy two heat tapes (try your local home depot) with thermostats. One for inside the fridge and one for the taps. Haven't needed them since moving from Idaho in 1975, but they're cheap and will hold the temperature around 38F.
I remember the Illinois winters. 0F with a lake wind is worst than -40F in Idaho.
Remember one unassailable statistic, as explained by the late, great George Carlin: "Just think of how stupid the average person is, and then realize half of them are even stupider!"
"I would like to die on Mars, just not on impact." Elon Musk