The Phaserl


Emergency Candle Heater: Building a Single Candle Clay Pot Radiator

from Off Grid Survival:

With cold weather fast approaching, I wanted to share a cool little project that I did over the weekend that can provide some extra heat during a grid-down emergency situation. With the heat from a single candle, it is possible to heat a small area during an emergency ­– if you can capture that heat.

Step One: Build a Small Emergency Shelter inside your home.

If you live in an apartment, or a house that doesn’t have a fireplace or wood burning stove, winter power outages can quickly turn into life-threatening emergencies. When the temperatures start to plummet, you need to take action.

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11 comments to Emergency Candle Heater: Building a Single Candle Clay Pot Radiator

  • Troy

    Got three of those, they work awesome. I made them for cheap

  • Stuckinsidethematrix

    There is no need for ANY nuts and bolts!

    The design shown is way too complex and actually reduces efficency by restricting the convection currents and insulating the outer pot from the heatsource.

    All you need are two clay pots – a largish one and a medium sized one.

    DO NOT BLOCK the inner pot but DO block off the hole in the large outer pot. All you need to do that is a folded piece of tin foil, or a big washer (likely where the nuts and bolts confusion comes from).

    I’ve got a couple of these things packed away for an emergency if my plan B fails. They are a plan C if you like.

    They arnt going to heat a big room, but they will keep a smallish room above freezing point if it is well insulated – and the pot heater(s) are kept running.

    DO NOT use in a tent, or close to combustable material, or in an air tight space!

    Otherwise good stuff.

    I recommend people check the web for alternate designs as you DO NOT need nuts and bolts for these things to work!

    • Angel

      Thanks for the heads up, Stuck. It will also be cheaper without all that hardware. This will be a handy alternative to the alternative.

    • Angel

      One more thing: the picture shows the pots propped up on rocks. Should there be a gap like this, or should the pots be flush with the surface they’re on?

      • Stuckinsidethematrix


        Yes, there should be an air gap, such as on the rocks shown, to allow for a clean burn of the candles.

        I would choose something a bit more stable than rocks though.

        I have tried a set up very similar to the one in this youtube video, and it works well and protects the flame.

        I note the guy in the video above blocks the inner hole and leaves the outer uncovered, which is different from how I did mine, but I might try it next time I get them out to see if his way works better than mine. It looks like there are many variations on this theme.

        Dont forget, these things are really for a plan C or even plan D. I hope to never have to use mine, but as they are so cheap it would be criminal not a have at least one as a backup of last resort.

        • Angel

          Thanks for the reply, stuck. Will delve into it further. And hey, just for a basic (short-lived) power outage during the colder months, why not have a few? (Obviously I have other back-up plans in the event of something more serious.)

  • lastmanstanding

    Kirkland cold-blast lanterns…provide heat and light. Safer and more reliable than this deal. Use ultra-pure oil if indoors.

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