Domestic Hot Water from a Woodstove

Discussion in 'Survival Articles' started by ColtCarbine, Mar 2, 2012.

  1. Tully Mars

    Tully Mars Metal weldin' monkey

    Thanks to all for an excellent article/thread. I know its old hat to all of you, but I just found it. I think its good that the older threads are being brought back up for all of us newer members! I am going to give this some serious thought as it should be pretty simple to fab up and install.
  2. Airborne Monkey

    Airborne Monkey Gorilla Survivalpithecus

    Pretty cool thread! Subscribed, and thanks. Although this applies more to y'all up north than it does to us down South.
  3. Maxflax

    Maxflax Lightning in a bottle

    Excellent content, helps me get ready to set up the castle basement log burner and hot water in cold months. Here's the type of warm weather water heater we will use, except ours will be massive, huge pipe and at the top of a tower. Ever grab a water hose on a warm day? Same concept...except black PVC pipe will get even hotter

    chelloveck and Yard Dart like this.
  4. kellory

    kellory An unemployed Jester, is nobody's fool. Banned

    Yes, did a rooftop solar water heater for a shower.

    chelloveck likes this.
  5. BTPost

    BTPost Old Fart Snow Monkey Moderator

    Just a NOTE, here.... I just had to change out my In FireBox Copper Coil, after 20 years. Our Hard Water finally built up enough Percipitates to clog up the Coil... Result, Luke Warm shower one morning.... We have plenty of Hot Water now.....
    chelloveck, Ganado and kellory like this.
  6. Motomom34

    Motomom34 Monkey+++

    Question regarding using your stove for hot water. @ColtCarbine is the guru for this stuff and I have read all he wrote on this thread. I have seen images of this set up:


    It seem much more simplistic but I am wondering is it as effective? The article made it sound so easy-
  7. BTPost

    BTPost Old Fart Snow Monkey Moderator

    Couple of things WRONG with the above picture......
    1. The bottom of the Heating Coil and the Tank should be close to the same level.
    2. They have the Coil plumbed into the Tank, BACKWARDS. The Bottom of the Tank goes to the Bottom of the Coil,
    and the Top of the Coil goes to the Top of the Tank.
    3, It would be better, and more efficient, if the Copper coil was on the INSIDE,
    of the StovePipe, instead of the Outside. We use Steel Wool, as filler, to plug up the Holes that bring the copper Coils out of the Pipe

    Other than that, it is a nice setup, and should make a LOT of nice HOT Water.....

    I can explain the Physics, if there are any questions.....
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  8. Motomom34

    Motomom34 Monkey+++

    I knew it was too good to be true. I have seen a few images of that set up with just a tank and coil. I kept wondering about the lack of relief valve and other parts. The tank and coil set up looks easy and the one I attached a picture of is in a tiny house. Simplifying is good unless it is dangerous.
    chelloveck likes this.
  9. kellory

    kellory An unemployed Jester, is nobody's fool. Banned

    No need for a relief valve, when the top opens for filling. The more coils, the more heat picked up from the pipe. Water circulates by thermal (heat rises, cold sinks, so yes, it is plumbed backwards)
    chelloveck likes this.
  10. BTPost

    BTPost Old Fart Snow Monkey Moderator

    Just another NOTE, here.... It could be that what the User wanted. is to use the Water Tank, as an additional Radiator, to help heat the space, by adding more SURFACE Area, for the Inside Air to take Heat BTUs from the Wood Stove. We use our 150 USG Hot Water Tank in this capacity, as well as supplying ALL our domestic Hot Water....
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  11. kellory

    kellory An unemployed Jester, is nobody's fool. Banned

    For woodburner, you can also get a "water jacket" heater. They are most often filled with water and welded shut, to spread out the heat over a longer time. But I have seen them, with a hard waterline coming in, and a faucet for hot water out. Hard-line goes to an overhead water tank of a few gallons.
  12. pearlselby

    pearlselby Monkey++

    I really like this, Tobit!!!
    chelloveck likes this.
  13. ColtCarbine

    ColtCarbine Working Monkey Founding Member

    To the top
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  14. chelloveck

    chelloveck Diabolus Causidicus

    I have always liked this thread and its is one of the more inspiring threads here. (y)
    ColtCarbine and Tully Mars like this.
  15. arleigh

    arleigh Goophy monkey

    I have long considered making a water heater over my wood stove but a little differently.
    I have an RV water heater tank that is in good shape and all the externals removed .
    My plan is to build 2 stove pipe Ts and divert that heat through the water heater and control it with a bimetal spring similar to what is used on an automotive exhaust manifold, for dampening and controlling the heat to the tank . Safety valve of course , but eliminates a lot of plumbing.
    And by the way IMO I prefer using compression fittings with soft copper rather then sweating silver solder on rigid tubing . it's much more forgiving and more durable in extreme heat .The little comparative expense in fittings is worth it if you have to redo something.
    plus I'm lazy .
    chelloveck and Tully Mars like this.
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