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Originally Posted by camp guy
Most any de-icer will do the job of keeping the area around a pier clear; but the real problem with piers and ice is during "ice-out".
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I always thought that as well untill I did some straightning and reinforcing of the crib and when I went up that winter, it was already danaged. The next season I had the circulator going and no problems since. The electric bill is still less than the repair costs both in material and time.
Not to say that a bay full of ice, many multiple tons, do not cause lots of damage in the spring. There is also the rise and fall of the ice that lifts or dives posts deeper.
Is the linear compressor style less expensie to run than the circulator. Seems it would be a little more work to put in and take out each season.???