sorry to be do dense...but this is all new to us. What is a "heat filament"? Also, if this water temp is below 55, which I'm quite sure it is, what are our options??? How are other people living aboard out here and staying warm? What I am afraid of is pipes freezing and busting.
Do I turn the whole unit off at the Nav station....or just let it run so it doesn't freeze? Please be patient with me.....all new and still learning.