how to keep bilge from freezing?

Discussion in 'All Things Boats & Boating' started by sdowney717, Feb 24, 2015.

  1. isesseg
    Joined: Nov 2017
    Posts: 0
    Likes: 0, Points: 0
    Location: PA

    isesseg New Member

    How about a fish tank heater? Like this one? https://www.amazon.com/dp/B003C5TPF6 For 20 bucks you get the heat where it needs to go. The little heater has a thermostat so only the amount of heat needed is applied. have the same issue wiyh my boat and am considering doing this. For the 2 gallons of water that accumulate in my bilge before the pump kicks in, I calculated 100w would be enough. There are online calculators to determine how much power is needed to heat a certain amount of water. Keep in mind that salt water still freezes - but at 21F. I am not sure if this heater would qualify as 'ignition protected', but on a diesel boat it should be fine... I think.
     
  2. dinoa
    Joined: Oct 2007
    Posts: 229
    Likes: 18, Points: 18, Legacy Rep: 97
    Location: florida

    dinoa Senior Member

    If you're going to throw something in maybe propylene glycol. It's non toxic, non corrosive, doesn't produce explosive gases and inhibits microorganism growth.
     
  3. BlueBell
    Joined: May 2017
    Posts: 675
    Likes: 64, Points: 28
    Location: Victoria BC Canada

    BlueBell Ahhhhh...

    I believe your easiest solution ( pun intended! ) would be to add salt to the bilge.
     

  4. gonzo
    Joined: Aug 2002
    Posts: 13,342
    Likes: 325, Points: 93, Legacy Rep: 2031
    Location: Milwaukee, WI

    gonzo Senior Member

    I don't understand how you can get rain water in the bilge if the temperature is so low. There may be snow on deck, but no way it is raining.
     
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