Hello, I am making this video with the
intention that it will possibly save somebody’s life here we have a candle heater it is
basically a terracotta pot with another one inside and a whole series of nuts
and washers attached to a bolt which runs through now firstly let me begin by
saying that these heaters are very very effective at dealing with condensation
in an environment like on a boat all this condensation here now on the
windows if I’d been using this heater throughout
the night there will be zero condensation they are extremely effective at dealing
away with a condensation this terracotta pot on top gets very hot and the bolt
here gets so hot that you can’t touch it in this case this was attached to a chain
because it’s on a yacht(out of water). Now please take note of this because
these are extremely dangerous devices the tea lights inside generate about 40
watts each so that’s four in there now so there is about a hundred and sixty watts of
heat. The heat in here get so intense now what you actually
create is a bomb now the paraffin inside these kettle
lights very quickly melts it turns into liquid as the candle works. Those ones aren’t quite there yet because I only lit this a few minutes ago to demonstrate, now let me explain how these
are dangerous. These kettle lights, tealights whichever
you want to call them they should never be less than eight centimeters apart in this case they are near on right next to each
other. What happens is theres two scenarios that can unfold because the wax turns to liquid the
intense heat creates the possibility for those liquids in each pot to ignite, however, if the wax liquid wax would leak
out and get into this tray at the bottom it then
comes down the bar inside and you can never get rid of it now I had a fire with one of these and
that exact scenario happened the wax leaked out and it came down the shaft of
this studing here and during the night it flash flared
the whole thing ignited all the paraffin wax inside the saucer ignited and the
flames came reaching out all the way up they came so high that they actually
melted this hook now look at the damage it did here it was exactly the same thing it was
hanging on that hole there and ignited in the night and really burn the boat down
now as I say these heaters are extremely effective at dealing with condensation however they are exceedingly dangerous you must never ever use tea lights that
close together now despite saying this i still use this
device because as I say does deal with the conversation however
i only use one tea light at a time but even then there is a danger because the
heat that gets generated from this device is really quite remarkable it is
intense heat this pot here once it’s been running
for 10 minutes you can’t hold it that bar there it is impossible to touch
it without burning your fingers so please please please if you’re going to make one of these do
not under any circumstances put multiple tea lights in and never ever leave it
unattended. The possibility for this to ignite and flash flare is extremely high. These are not so these are not safe
devices and even though they may be aesthetically pleasing and very
effective in many ways they are totally utterly lethal they are very very dangerous if you use these at some point the
possibility of having a fire erupt within the actual liquid wax itself is
extremely high these are very very dangerous I had a lucky escape please don’t make the same mistake


  • Sarah Strong says:

    I put several Christmas Candles out in my porch to decorate it, standing together on a metal tray. That caused a flash fire with the entire tray getting full of molten wax & sending huge flames up. Fortunately I had put it in a safe position so virtually no damage was caused & was keeping an eye on it, but scary. I have also seen molten wax dripping from a candle with the actual drips flaming, which could easily start a fire. Candles can be very dangerous.

  • Jay Bax says:

    Perhaps the boat tilted and that's how the wax poured out?

  • Vladimir Hristov says:

    Hi and thank you for the helpful video, but what if we use a tea light chandler for each tea light?
    That would also improve the heater's efficiency.


  • Miles Weston - Sailing High Seas says:

    See New Video Update That Explains Why These Are So Dangerous: https://youtu.be/xX28ICxi1s8

  • Tina Sprocket says:

    #1 rule of burning any candles:
    NEVER LEAVE THEM UNATTENDED. Also, how far apart they are dosen't seem to matter as much as why not have them in deeper candle glasses? If it splashed / boat rocks, it's still inside the little candle glasses. They're a cheap remedy –

  • simon4043 says:

    All valuable advice.
    They are also a risk of carbon monoxide poisoning, which gives no warning before killing you

  • Traditional life / Gone Fishin' says:

    I would only use this outside maybe on a gardentable to radiate some heat to whoever sits around the table and never in a closed Space like a boat or cabin etc.The firehazard is one thing but the fumes these candles give out will ruin Your lungs if you use it alot in a closed space

  • rupe1986 says:

    Bad designs like in this video, is what can cause disasters.

  • Hucky Kim says:

    so even though it's dangerous, it works

  • Edward Foehring says:

    What happens if you accidentally knock it over.

  • ColaBling says:

    Blimey l was just about to make one from seeing the other video 😒

  • Catrina Cross says:

    Good idea not to use more than 1 tealight. And seal the hole at the bottom to stop wax leaking out.

  • Luigi Gallerani says:

    VERY good video, finally someone that says the TRUE of this CRAZY Do Yourself SUICIDE device.

  • Tina Braxton says:

    I don't have a boat, but I use this kind of heater on land. I don't use the metal parts. Just build a stable, low platform of large bricks. Use a small clay dish and put it in a well in the bricks, with the well open to the front. Then the clay pot on top.

  • Maria L. Rapaglia says:


  • Brando Walford says:

    metal bottom with no whole

  • Colin Bruner says:

    Thank you for your intention to help someone else who may not know better. Shame on those who would arrogantly criticise you for that. They behave like the trolls they are.

  • Go4 Stepha says:

    Thank You

  • joseph keeney says:

    Use 9 hour candles in thick glass holders with bricks on metal to sit it on. Two pots inside each other gets up to about 170. Haven't used my electric heat in years . cost about one dollar a day for each pot.Never a problem.

  • S.Tracy says:

    airflow English man holes and a plate over top and clay pots absorb heat chicken pete.

  • Mordy Fisher says:

    You can keep the tea lights inside aluminum cans cut down to about one inch high and then wont leak every where… You can also put aquarium gravel around the tea lights

  • Paul Trudeau says:

    BFO: "Blinding Flash of the Obvious". Rolling boat = spilled wax.

  • Karen Lee says:

    They are not match for a boat they are meant for camping. In a larger more open room or a campsite. Having one on a boat is just asking for trouble.

  • James Raymond CreativePhotography says:

    I installed a dry air heater called Propex Heat Source HS2000, it operates of propane, has a thermostat, combustion oxygen and exhaust are separate pipes from outside the vehicle, easy to install, does not use much propane,

  • J T says:

    Why would you use this kind of heater on a BOAT???? And with this kind of small candles of course it would spill. You are very lucky to be alive and the boat with minimal damage.

  • Sandy Beebe says:

    I don't use tea lights .I use one medium sized thick walled candle in a jar intended to handle high heat .I would never use it on or in a moving vehicle nor would I hang it ,nor leave it unattended . As a chandler I am extremely careful with candles .I use a sturdy chafing dish set up and i sit it on a ceramic plate (ceramics low fired at 1900 degrees) and can also handle heat ..works great ..a candle flame can reach up to a thousand degrees …so yea id never sleep with one on just to be safe . the idea with the bolt through the stacked pots is that a stainless bolt can also absorb high heat and any heat not absorbed by the bolt will rise and then fall seeking an exit from the bottom then rise into the next pot in the stack ,making its way to the top then exiting out the bottom into the next pot etc ..also it is important to keep a candle wic trimmed ….these little tea lights are hazards for any use ….

  • Highlander15 says:

    I’d say maybe use 3 candles and sit them in little glass containers that extend above the candle height.
    Thanks for the vid though, this is good info.

  • Schubert Jörg says:

    Thanks a lot for this warning.
    Greetings from Germanistan Jörg

  • murphy13295 says:

    Fascinating , who would think Michael Caine would take the time to make this public service video

  • Mr Carpcatcher says:

    You have blocked the hole at the top what do you expect. You need to drill some holes in the top.

  • sky scan says:

    Thankyou so very much.ive been in an indoor fire ,so i know what its like.only just survived the smoke inhalation when the fire crew gave me oxygen mask outside as i was lying down exhausted on the grass.i did manage to put out the fire using mine and my baby sons duvet.thankfully that night he was with a friend.as a baby he would notve survived that night.

  • C Dagcote says:

    Maybe having one on a boat is not such a good idea! And get a new design this one has some issues.

  • TheDevilshire says:

    Great advice and much appreciated. Glad to hear that you managed to sort it out.

  • Joel Weidenfeld says:

    The limitation is the fuel..omly a few hours burn

  • Big Rudi says:

    Die Gefahr einer Fettexplosion dürfte hinreichend bekannt sein, wenn zuviele Teelichter zusammen brennen.

  • sonya griffy says:

    I had no idea, thank you for the heads up.

  • Bianca Möllmann says:

    Thanks for the warning. 🙂

  • JB S says:

    would it be safer if you use a bigger pot and a smaller air entry ?

  • JB S says:

    adding a second plate down could avoid the wax running down and stabilise the system (lower garvity center ) ?

  • Tealeaf Song says:

    Thank You! Great Warning. Helpful comments from other viewers as well. Thank you All.

  • s. gillespie says:

    Ermmm maybe I'm Being a bit stupid but why on earth would you leave a naked flame burning thorough the night condensation or not. I live in a motorhome off grid and I've never been tempted to leave the gas fire on never mind a naked candle.

  • Patrick Porco says:

    Thanks for the warning…i was thinking of using this as emergency heat in the event of a power out…i will try to find a better alternative thanks to your warning…God bless you

  • KuraQueen says:

    They are useless for heating my van. I threw mine out. I have a ceramic bowl inside a pot and use it as a fireplace. Depending on how cold it is, is how many candles I use.

  • Kirby Armstrong says:

    Or put some kind of washer on bottom to prevent leakage. Also if they are that effective then use only two tea candles.

  • nangma07 says:

    Sir, I'm glad there were no injuries, please don't use it on the boat. A safer way is to put the candles in an old muffin tin and unblock the holes in the pots, that way there is sufficient room for candles and airflow. You could also put the muffin tin in another tin with a little water to stop the room becoming too dry. 😎

  • Cindy Tepper says:

    Cheaper to burn propane

  • St 1111 says:

    Wow thank you

  • blueshinystar says:

    Nice video, but if u are freezing to death and your heat is out… you will be using a device similar to this any fore device is notv100% safe so ya use with caution, and i think this design is incorrect maybe do better research on the design…

  • Shawn Greenaway says:

    There is a huge difference in what you can get away with on land opposed to sea.

  • Brian Larkin says:

    Not healthy to breath paraffin and similar diesel fumes that tealights give off, never mind the fire risks.

  • Rosy Outlook says:

    Sad when people only say negative things when you are kind enough to share your experience. I'm sure your video has probably save a few lives. Thanks for being humble and kind enough to warn others.

  • William Goboff says:

    Get glass candle holders so the candle was can't melt inside the pot then install holes in the top pot feor heat vent

  • susan anderson says:

    Get a wire waste basket put holes in the bottom and turn it upside down then placing it over the pot heater to prevent touching it

  • VANgazmic Voyage says:

    I've always wondered that if you need radiant heat from a brick flower pot, why not just place a couple of actual clay bricks on your cookstove, heat them up, then shut off the flame and let them radiate that heat back into your home?

  • Gary Cooper says:

    I believe that it ignited because of your setup sir. We elevate the pot up on a couple of bricks or cans of soup, leaving the actual candles much cooler, while still retaining the baking hot pots above. The bolt running down to the bottom of the pot where you have the candles should be about 4 inches longer, so the space between the candles and the pot would be 4-5 inches, then that design would be much safer.

  • Karen Tysver says:

    No one ever talks about the toluene, benzene, acetone, and other VOC's emitted when burning parrafin candles. Scented parrafin candles and tea lights are like running a deisel engine inside your home. They are toxic. Only use beeswax and soy candles.

  • Davina Test says:

    Good points so maybe use the muffin tin design that would separate the candles plus they would be on the floor maybe with an additional tray under the muffin tin……maybe test

  • John Beal says:

    Thank you very much.

  • Siffle says:

    I like how you use watts as a unit of heat

  • Timothy Smith says:

    btus are measurements for heat

  • Mind Open says:


  • Belgian Prepper says:

    you need a metal undercase and only use for 30-60 minute to get rid of most of the cold

  • Ruby O'kosi says:

    Thank you

  • Miles Weston - Sailing High Seas says:

    Hi, I am Miles the producer of these videos on the 'Sailing High Seas' Youtube channel. Click here for the full playlist of my boat life videos https://tinyurl.com/SailingHighSeas

  • Philip Douglas says:

    Try using a tin can stuffed with toilet paper and soaked in rubbing alcohol or the like, instead of the paraffin tea lights. Still hang the can below the pots to heat them. You can cover the can with foil when you are done. Similar operation to a fondue pot.

  • Karen Elizabeth says:

    My friend told me about these "heaters" that he was planning to make one to put in his trailer. I thought "umm… you got a death wish?"

  • Susan Appleby says:

    Take the top off and let the heat out. Then you will have a good heat coming out. Put your hand over the flames and see the difference between the two options and you will see. I know its not as safe but if you are going to bother using candles let them work properly. Just make sure you watch over it so there is no trouble. Fire is very dangerous and you should never turn your back on it.

  • kay van says:

    AHHH How about using a couple storm lanterns, a candle is going to put out the same amount of BTUs no mater what you put it in or under.

  • Huntad 666 says:

    I had one flare in a similar way. Luckily I had my wits about me and I used a wet towel to put it out and smother the flame. Could have gone much worse. worth being aware of the risk and having a bottle of water and a towel near by just in case something does go wrong.

  • ALPH MEGA says:

    i can see how it would be dangerous.. but just build a floor model and vent the top. still good information if you have that design

  • LIVING GOD says:

    The plate that is handling the candle also very hot?

  • sarahmorrill says:

    I get the sense that many people responding here are not aware of what it's like for liquid paraffin to ignite. It's like a fire bomb.

  • Hippie Style says:

    Thank you for this information!

  • The Calming Kind says:

    Great advice….thank you.

  • D Owen says:

    I put kerosene in a wick bottle and put in them its safer (like old ink bottle size. and alcohol penny stove works grate too make out of old soda cans. vids on how too. yeah candles can be very unsafe for a few reasons. 👍 you can boil kerosene with out it ignighting . and alcohol wick bottle is ok too you can put out alcohol fire with water if something did happen but that would be rare I'm sure.

  • Theresa Walker says:

    I just watched one and thumb down and said almost exactly and wholeheartedly agree.

  • pa maj says:

    Be cautious, good advice 👍

  • Hal R Hosfeld says:

    Thank you sir for your words of advice. I been researching building and the use of these heaters and you words may have saved me and my wife

  • Crafty Camping says:

    Top work 👌
    + Carbon Monoxide poisoning.
    Even if it is lower than a fatal dose CO can cause irreparable damage to you internally.

  • A. Jones says:

    This is why you should use a masonry drill and drill some small holes in the top of the pots. This helps the hot air escape and helps heat up the surrounding area with warm air from "gravity air" heat. The pot also gets warm and radiates heat also. It looks like you used an "aluminum" hook, that would get soft when heated! I would not have used so many candles either, not to heat such a small area on a boat!

  • Jaime Silva says:

    actually one time I had one of this little candles igniting in fire, and it was not even in a pot, it was just standing in a table. the whole candle was on fire, luckily I was there looking at it with surprise, which left a permanent burnt black circle on the wood table. This might have been 1 case out of 2000 candles. but it did happen.

  • The sozo guy says:

    Has anyone ever used this concept to cook food in a camping environment? Seems like, if done carefully and treated as a campfire, it could be a great tool in the wild.

  • Tamara Kennedy says:

    Then why would you do another ? ….ive lit candles for 40 years and never once had any ignite together…if that were the case then why have a wick? It must require a good amount of heat perhaps more of a gap for air to create an updraft rather than gather and backdraft i can see how rhat might play out…well thank you for making this video i appreciate it..i was going to go get the items needed to make myself a heater lije that since my forced heater is blowing asbestos dust on us.

  • Justin Zorok Tyler Langford says:

    Petroleum wax tea light candles?

  • Heidi Pucci says:

    Awesome channel and instructions thank you!

  • Heidi Pucci says:

    By the way, I am so glad you weren't hurt in the fire.

  • Jo dy says:

    Watts of heat? Come on. Do you mean degrees?

  • septembermannen says:

    There is a flame, hence combustion which gives of heat. Byproducts are CO, CO2, H2O and a lot of small carbon particles called soot. They glow so the flame is orange. These things are dangerous to your health as well

  • Su Su says:

    Thanks for this warning

  • Jack Bauer says:

    I nearly burned my house down with one of these. I do not recommend

  • John Conner Smithllc says:

    Yeah I almost burned my whole freaking house down with one of those couple years ago

  • cfv1984 says:

    Obvious improvements here: put all the little candles on a pan so there's no contact with the bolt hole, and how about you put the candles out before going to sleep then just coast on the termal mass? Finally, maybe having a third pot on top could help trap more heat, avoiding the need to have multiple open flames next to a bunch of aeeosolized fuel at any given moment? Cheers!

  • White Fox says:

    Thanks for posting this Miles. I know its a downer for some to acknowledge the dangers as it seems initially like a super cool idea…but it makes sense that melted wax in a non ventilated space that is reaching higher and higher temperatures will reach its flash point and ignite/combust. Paraffin wax apparently will ignite between 199°C and 249°C depending on additives…and that's without considering the build up of fumes under the bottom pot. It could be safer with ventilation holes but then may not work as a heater. Obviously leaving any naked flame unattended is not the go, but i think in this case the high temperature readings aren't actually a positive outcome of this set up

  • Crazy Big Ideas says:

    make it safer by putting a bucket of water under it , and right at the point where it is connected to the hook use a tiny bit of rope. so , when it flares up and the flames reach the bit of rope , the rope burns off and the whole contraption falls into the bucket of water, this douses the flames instantly . it's kind if like a circuit braker which cuts off in case of an overload.

  • C J Dashwood says:

    You blocked the hole at the top (chimney) with a bolt! Heat build up…….crack!

  • Luke Morrison says:

    get a chinese knockoff diesel heater for $200 dont breath these toxic dioxin laced fumes and deal with fire risk.

  • David Simmons says:

    The fact that there 700+ dislikes proves that ignorance truly is bliss.

    Great video!

  • Fugeelahahaha says:

    There’s a suspended tea light candle you can find at dollar tree right now. It’s suspended in a glass jar. Much safer than this contraption. Be safe people. When your house burns down and you lose everything it’s devastating. Happened to me. Not by candle but by someone very dumb who was a smoker.

  • Garrus Curiosity says:

    well yes when you do somethin wrong there is a danger

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