Hey Garrett053, Thanks for the comment, great question. While using motor oils and transmission oils like we do, there are many detergents, stabilizers, additives, etc. that are burned in the process. There are of course professional, commercial and residential waste oil burners out there, so it is not illegal to burn these things but not many studies on burning the latest synthetics 100% or mixed with conventional are available. Much testing needs to be done, that being said, our current setup burns hotter and cleaner than most commercial units so we are happy with the results. We just used it again last night, very toasty in a hurry. 🙂 Please share any results you have experienced.

Hey davidirv, Thanks for the comment, yeah, we really like the Psalms. Happy building...

Hey anwarsherif3116, thanks for the comment. If there is a clean burn with a blue flame then there should not be a bad smell. The only time you should smell burning oil is when the system is shutting down as the oil stops producing vapour and starts to cool and can produce smoke for a minute or two. The furnace should be in a well-ventilated area, as you can see ours is outside under a covered porch, but some people have theirs in a garage or shed and pump the heat in from there. Never use inside a house, these types of furnaces should be outside, and the heat is then brought in through air flow or just like an outdoor wood boiler, you bring in the heat with water pipes. hope that helps. 🙂

Hey renosgarage7451, thanks for the comment. Yes, we are still amazed at the performance of this build. The real test is if you use it for more than one test season and we are starting the 2nd season now, so we like it. Happy building. Please be sure and watch the top 10 Dangers video on this channel too before building one, many have said it was helpful...

Hey theusconstitution1776, thanks for the comment. This definitely gets hot, but there are certain, helpful, safety features built in. For example if, like you said, something goes wrong with the valve and way too much oil comes out then the flame gets flooded and automatically goes out and continues cooling the furnace until you just have a furnace full of cold oil. (That is why you always make sure your oil source can never overflow your furnace volume - not really dangerous, just an oil mess on the ground or deck.) This whole problem is pretty rare but ends up being a non-problem since the flame goes out. Of course, you should never run this while you are sleeping, and you should always have a fire extinguisher on hand just like with any gas appliance in the house. Definitely safety first. 🙂

Hey Daniel, great question. You may have seen in the videos that we often start up a cold system quickly with a mix of diesel and gasoline (not just diesel because it does not start right up with a match). Although you can burn gasoline in these, the danger is always in the vapour. Remember also that these systems run on the vapour of oil not the oil itself, that is why the efficiency jumps way up and the flame is blue. We love the vapour, but it is safe oil heating up quickly to make vapour and then burning, not dangerous vapour ready to explode at any time like with gasoline. It changes as it enters into the furnace. This is what makes these furnaces so impressive. So the problems that can escalate quickly and potentially go very wrong are many such as a volume of gasoline in the area of a furnace (quite dangerous), a proper feeding system for gasoline - I do not think I would feel safe dripping gasoline down a tube and hoping it does not find its way up the tube and into my source container causing an explosion. You see, most people do not understand that you can put out a match in waste oil and even diesel fuel, but do not try it with gasoline unless you are properly prepared for a sudden explosion. Also, be sure and watch the top 10 dangers video on this channel before you go too far in building and operation - just to be safe. But yes, these do burn old, dirty, inferior gasoline from generators and weed whippers and minibikes and lawn mowers, etc. where the gas has been sitting too long - why waste it, right? You just have to be extremely careful and as of yet I wouldn't feel safe having a vapourous tank of gasoline fuel anywhere around the furnace. Thanks for the comment. Happy and safe building. 🙂

@learn2farmagain30 oh I didn't even think of that, if the liquid has a lower boiling point it would cause a flash... that makes sense... okay thanks, so probably best to use the waste gasoline as a starter component and mix it with oil

Great question, no exact measurement as yet but I would say this setup gives well over 100,000btu...but it is variable down to probably 30,000. Many factors come into play such as oil input, fan speed, oil type, distance to building, etc. thanks for the question and happy building. Be sure and watch the top 10 dangers video on right here on this channel first of course, just to be safe. 🙂

@@learn2farmagain30 I think a bottom feed version has potential to be simpler! I could probably write your fine print video I understand I am the mechanic in charge 🙂

Hey @bobharrison9620, thanks for the comment. Sure, anything for you...what did you have in mind?

@@learn2farmagain30 Hello, thank you for your help. Im real curious about the blower tube air pipes you used. I would like to know the size of it. And was it looks like tubing so that would be an ID if I'm not mistaken. Im going to be probably weeks with this pot belly install but yours is being collected for now. Thank you Sir. Bob H

If you watch the endless free hot water video on this channel it has a water jacket design you might like, but then you have to make some type of loop in the house for a radiator system to release the heat, it can get complicated quick especially since the heat is extreme compared to a typical boiler system with a flame control on and off set up. The heat will just keep building unless you can constantly and consistently remove the heat without fail, you would also have to have a pressure tank, so you do not blow anything up spewing boiling water or more likely steam everywhere which is very dangerous.... please be careful. This is one reason I will not show such a system to the KZbin community, way too dangerous until we come up with a sound automatic ignition system along with an overheat sensor setup. Air exchanger systems are so much simpler for most people and far less likely to malfunction, just always check air quality, especially CO. I hope you have watched the Top 10 dangers video on this channel as well. Never too safe. Also, never use while sleeping, I always shut down after the house is about 85 before bed...feels like summer for free! But besides all that, be sure and share what you come up with so we can all learn further. 🙂

@@learn2farmagain30 I was commenting on the "10 dangers" video, definitely a must-watch for anyone considering these kinds of heating systems. I'll have to check out the "endless free hot water" video, that sounds like another very informative one. As far as excess heat building pressure and bursting a liquid/radiator based system, you're right that it is a very real danger. I worked for a couple years as a home inspector (years ago), and one of the things I still remember was always checking the pressure relief valves on water heaters and boilers. They are there for a reason on commercially made units, and are a crucial piece of safety equipment! That kind of relief valve would be one of the requirements if I made my own system, but as you said anything manually controlled like that should still not be left running unsupervised. Just a thought, adding a large (probably several hundred gallon, depending on the size of the building being heated) reservoir tank to the water part of the system would give the option of shutting off the burner before bed and still having at least a couple more hours of usable heat available. The burner would have to put out more heat when running to heat up both the reservoir tank and the building, but it might be a worthwhile addition.

Chickens love them lol

@zs6deb, Hey thanks for the comment. Yes, that was the hope that if we could help just one person or family avoid disaster it is worth it. I'm actually surprised no one has added another video improving on this one, this was just supposed to get the ball rolling. So, thank you for your kind words. Happy, safe, building.

@Mancavedweller1 Thanks for the comment. Yeah it comes in pretty hot. We kept the air flow at a maximum without sounding irritating like a hair dryer. You can adjust the temperature by decreasing the flame in the furnace which is what we recommend. It does feel awesome to be able to go really hot if you want to but also have the ability to tone down the flame and save on fuel if you want to. We are actually working on a model about a third of the size for smaller buildings. updates when that happens... Happy building.

@@BradShows I think some kind of valve that controls flow rate exists - I'm still a little concerned about the oil viscosity could change due to temps etc. Maybe that could be added?

@gsdggasgs1799, Thanks for the comment, yeah, it works great... a lot of heat. We are working on a smaller model should be complete next winter, about half the size. Happy building.

@@gsdggasgs1799 Yes, definitely changes happen to the viscosity when the temperature changes. So if your oil source is in a building that warms up as you use the heater you need to be aware that it will dump more oil in as the temperature rises increasing the flame even to possible danger levels. (As shown in our "top 10 dangers" video) But if your setup is outside, as in the video, the temperature remains relatively stable as your building warms up, so no problem.

@superochoo, Thanks for the comment. Sorry, no diagrams or drawings just step by step video and descriptions. Remember a video is worth a billion drawings. But if you have any specific questions we'll try and help. 🙂 Happy building.

Hey Ss, thanks for the comment, Yeah, I do not like clickbait either, but if you read the thumbnail carefully it does not say no fan or blower...it specifically says "Can run without any electricity" and "no blower required" which are both true. the video is supposed to show people that these things are not required IF you have a chimney with a strong draft which will create enough pull to run a great furnace. But that you can also run this same furnace without a chimney and use a blower, it just demonstrates the versatility of such a bottom feed burner, blower and no chimney - blower and a chimney to remove all toxins - or no blower and a chimney. If you watch carefully, right after the discussion of not using a blower there is a shot of the blower hose removed and lying on the floor at the 7:56 time mark. So it is all there if you watch the whole video and pick up on all the wording used and its intended purpose of helping people make decisions before embarking on an entire build that they may not be happy with later. But I can see where that could be construed as something mischievous, especially understanding how some people run their channel through deception. We at Learn2farmagain have no such intent (Leviticus 19:18; Matthew 5:43-44) and only wish to share so others can make an informed decision and then help the entire KZbin community in sharing and rocket fueling our production models to the perfect furnace, especially for those in need of cheap energy to heat food, water, or buildings to live happy lives as they provide for their families.

Hey user-vx2in8uc7s thanks for the comment. yes, videos can take time.... not everyone appreciates that until they do it themselves, so thanks and happy building...

Hey bygeorge328 thanks for the excellent comment. Yes, it has been a long time in progress but thankfully it is working better than planned or expected. Now that we have a working model all the following ones should be much faster to build. Be sure and share whatever you come up with to add to this one, like water jackets, etc. There are so many possibilities on various ways to build these and ways to deliver the heat into a building that I can hardly wait to see a year from now what it all looks like. We are working on one now that will have a heat exchanger on the bottom, then a small water jacket for showers etc., a small steam generator to a turbine system for led lights, and then of course a cooktop on top... Happy building. 🙂

Hey jrgmty7685 thanks for the great comment.@7685@7685@7685 Yes the conversion from heat to electricity through steam production is already happening all around... Usually people skip the steam engine and just use a pot of water with a small hole to let the steam under pressure spin a turbine mechanism to generate small amounts of electricity for lights etc., With a lot more work you could build a steam engine to generate more power though. Great thoughts...

@@learn2farmagain30 that's cool. 😎

Great to hear and Glad it's working so well. I have been searching these for weeks and found them too dangerous with no real oil flow regulater for over filled bucket. I have the parts supply's of round stock and tanks. The heat exchanger a 55 gal drum instead. Over the years i have had 7 school years of metal shop and many ranch years. I have been Bob the builder to many. Now old disabled and put out to pasture I am hoping I have this build in me. Figure all I do anymore is my last hurrah so this could be a topper. The square stock is a problem. Might round stock be interchangeable? Exct exct. Wow. This design looks the safest of all. Thanks Again good work

Hey psyamok3735 thanks for the comment, great question, it is just a part of a plastic blue 55-gallon barrel. Usually easy to find and usually less than 10 dollars each. (many uses). In fact that is what is at the other end of the big pipe, another 55-gallon blue barrel.

@@learn2farmagain30 I mean the blue part where you have the water piped into, at the toilet seat.

Hey @psyamok3735 ok that part...sorry... That is a special part called a separett you can get it on Amazon. Here is the link... www.amazon.com/Separett-Privy-Kit-folding-seat/dp/B01N3YYG9Q/ref=mp_s_a_1_14?crid=3385NR6YMAGA4&dib=eyJ2IjoiMSJ9.Xe8onop-u48Cw_LxcejkIIk27NL4O506A2wBk4ViIuNFdrXfb9iEEg-qugI0rxxR0gVLAY1QID_IwT2sRf2E5nPl3PQWnwSbnkhw7YIN56Wox8Jzw3k8yV1HZooI-OEXx9j-JLh7z2vK0zfN2mtCTrwUcUJ9kPBidsk33MJGGm85pUmHGOsYTeyeMvjIp32Y2LTgG_edcbMCU-QkzrHF5g.PRs5aQqWEEAtJa0KtNHcCOXV9hp7DgP8yXzmiVFts4Y&dib_tag=se&keywords=separett+toilet&qid=1710301251&sprefix=seperett+toi%2Caps%2C253&sr=8-14 Or a cheaper one: www.amazon.com/gp/aw/d/B0BNTSR7R2/ref=ox_sc_act_image_1?smid=A126SCFIZOG0TY&psc=1 Hope that helps...

hey hjhenk422, thanks for the comment. glad you like it....does this mean you are currently starting to build one for yourself?

@@learn2farmagain30 yes im coverting a woodstove to waste oil atm , and i love this vid you made very usefull

Hey jkuneck thanks for the comment. I hope you have a great time building your furnace!

Hey BradShows thanks for the comment, Yes, I love that ending too. I've actually watched some of your videos on your channel before, I really like the quick skit idea, you also have most excellent content, dare I say that it is even better than this channel! This stuff will keep you warm, but your channel has more eternal value that will last well beyond the life of a waste oil furnace. 😊😊

Hey jrgmty7685 thanks for the comment, that is a great idea. I would probably use a blower and solar power as in our camping stove video first so I would not have to pump the whole time, but it would certainly work if someone else was pumping while you cook. so many great ideas....thanks.

@@learn2farmagain30 the only problem with solar is the sun is not always there. But still it's good to keep all the alternatives 👍🏽

Hey eshetchayil4669, thanks for the most excellent comment. Yes, part of the whole purpose of the video is to help us all to be able to have heat, hot cooked meals and hot water production at zero to no cost. Looking forward to your build video soon! 😊😊

Hey @Blxz, Thanks for the comment, Yes, I agree, there are so many good videos to watch out there. I hope you build an awesome blue flame furnace yourself soon...and share!😊

They are awesome!

Yep! Somebody knows their sheep!

Hey @chryslerjune, thanks for the comment. Stay tuned because we've got a better one coming in the next week or so. There are many clean burning heaters/furnaces out there now you just have to search blue flame and they are usually pretty good, the yellow smoking ones are just too inefficient and dirty/smoky anymore. They can produce a lot of heat though. Happy building.

Hey @hitekredneck109, Thanks for the comment. You may want to wait for the next video, we just finished a superior model complete with heat exchanger installed in a home. Final test was actually today (2/8/24). I've seen nothing like it online to date, we will begin compiling the video now, hopefully it will be published soon. Happy building.

@hitekredneck109 that video is ready if your interested...here is the link...kzbin.info/www/bejne/rpXWo62fi9h8a5I

@@learn2farmagain30 thanks!! I'll check er out 🤙

Hey coachgeo, Thanks for the comments, great observations. If I'm understanding your questions correctly, on the oil backflow, if you are using blueflame top flow like in the videos then you would have to fill the furnace with 1 1/2 to 2 gallons of oil before it would come over and out the burner air pipe. Also because of the design used on this channel, the burner over a pipe setup means flame out before spillover so no dangerous oil fire, just an oily mess that should never happen if you have less oil in your feed than your spillover level, and if you just peek over at the temperature gauge every hour or so to notice any problems, you'll see the problem before any danger happens. These setups are simple easy to build and have free heat, they are not fully automated with electronics and leak detectors and shutoff solenoids, so they need to be cared for. There should never be an obstruction in a blue flame setup, there is no hard crust formed like in a yellow flame furnace, just be sure to screen your oil first. It is nice to have a setup that stops the flow of oil @ some point, but easier than that is to have an oil supply that is less than your overflow point. Hope that helps, if not just let us know...

Hey Penny, Thanks for the reply... In this demonstration we are simply showing a danger to all those who are designing a "safer" waste oil system to try and get air into a living space, not just a barn or garage etc. but an enclosed living space. While this is a noble or understandable endeavor, the danger is if you have a type of outdoor furnace setup to be "safer" and then blow the heated air in, even with a proper chimney, if anything in your experimental setup fails or leaks, it can blow carbon monoxide, foul gasses, etc. into your living space unnoticed - very dangerous. Of course you should never blow the chimney heat and gasses directly into your living space. This was just a demonstration to get people thinking. It's more difficult to show a perfect outdoor furnace with a tiny crack in a heat exchanger delivering invisible gasses into a home killing people. Hopefully this was enough to keep people thinking and from endangering themselves or their family while they are just trying to stay warm affordably.

Hey @DamonBrown-tm8hc, Excellent comment, we use a fine kitchen strainer as shown in the video starting at 13:12. Also, the barrel is an awesome idea for heat savings, although not as much is lost like on a wood burning stove which is usually around 400 degrees on the vent pipe to get a fireplace box about 500 degrees, whereas this set up produces between 700-900 degrees Fahrenheit (depending on the blower) on the furnace with only about 200-250 degrees on the vent (another awesome feature of these furnaces). So you could save some heat, but if for any reason your flame goes out, you risk making a giant bomb (if you use a 55 gallon drum) in your living space if it reignites. I highly recommend everyone watch the "waste oil burner top 10 dangers" video on this same channel before making a furnace of their own so you understand how to safely operate and what not to do with these furnaces. Happy building and play it safe...

@@learn2farmagain30 I missed the strainer the first viewing. I get it now. I watched the top 10 dangers kzbin.info/www/bejne/rWqag3mXgsyInJY and makes more sense to me. I also see when you have a flu pipe you add a cover to the top of the furnace but it's loose on top, in case of an explosion, it can just pop off. Love your videos!