Free....AND Illegal?.....Those are two of my favourite things!, you have my attention good sir.

I'm in the States & use a diesel heater to heat my workshop. I found that it runs on diesel, kerosene, and Type A Jet fuel but I haven't tried biofuel yet. Kerosene is expensive here and diesel is $4.89 a gallon so I go to a nearby small airfield and buy 10 gallons of Type A Jet fuel for only $3.80 a gallon. The only hitch is that the nozzle of an aircraft self-serve pump won't fit into a standard fuel jug opening so I had to buy two 5 gallon wide-mouth fuel jugs which have a large enough opening. A company named U-Jug makes them. In short, burning Type A in these heaters is a lot less expensive than using diesel fuel or kerosene. I haven't bothered to measure it but I think I get a longer burn on a gallon of Type A than I do on diesel fuel.

Great vid. Here's a tip;

I purchased this unit in 2024 and it works good. As for commissioning, I just connected the intake/exhaust, 12V, added fuel, and then powered on and went full blast for 48 hours. No problems, and it’s very efficient.

Thanks! I was absolutely amazed with this tutorial!!. I myself being a welder/fabrication teacher. I am currently teaching my children how important or is to have imagination to be a welder.. I found your tutorial amazing and I could not help but support a fellow welder/fabricator.. I wish you nothing but success, wealth and happiness in the future, you are an inspiration to many who are able to see what your doing and the fact that you are potentially helping those who do not have the money to heat their homes in the winter. God Bless you!

If you build a setup that will cool the exhaust gas to below 100C, you'll get another boost in efficiency, since you're burning hydrocarbons. Part of the exhaust will be steam. If you make that condense out, you get all the energy from turning water into steam back. Watch out: the other exhaust main component is CO2, which forms a minor acid with water. You'll need stainless steel or ceramic piping for the exhaust, otherwise it will corrode really quickly.

I know the exhaust goes outside but I think it would be extremely wise to have a carbon monoxide alarm anywhere you’re using one of these, in case of exhaust leaks

15:35 If the exhaust is running (or at least peaking) at 240 C, that's a fair amount of heat going out the window. Maybe a secondary heat exchanger, which could be as simple as a cast iron radiator or just a long metal pipe, would reclaim that heat and increase the heat output while cutting fuel costs.

Few points to add.

If the exhaust pipe is 300 C, you could easily run it through a heat exchanger a recover some heat for hot water or pre heating water for a steam engine - or just have another air to air heater going so you're using the exhaust heat, put a small pc fan on it to get flow.