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Why not leave off the hose and just put the filter directly on the air inlet? Is there a particular reason why they cannot be done?

Thanks for your input. Interesting stuff, these heaters, for those that have a technical interest. Don’t get me wrong, a 2 kw heater has a place in many installs, but my view is it is better, noise wise, to have a bigger heater running slow, rather than a small heater running flat out to produce the same heat. Cheers. JMcK

Thanks for that info and link. Fuel consumption is totally dependent on the pump dose volume and Hz rate. When comparing heaters you also need to look at the output air temperature and output air volume. Thanks for your input. JMcK

Hey John, just been and looked at a video on fuel consumption for a 2Kw heater czcams.com/video/iuEE-PC2dlE/video.html His findings are completely the opposite, and at maximum output, his heater used exactly HALF (200ml/hour) the amount of diesel of a 5Kw heater. I watched another video a week or so ago of fuel consumption on a 5Kw heater on full blast and it was 400 ml/hour. So seems there's a huge difference in fuel consumption between different 2Kw heaters. Some are throwing diesel $$$ out the window while others are using a proportionate amount relative to their output.

Thanks very much John, fantastic information. The first thing that shocked me with the 2Kw was the main inlet fan being the same diameter, yet the housing body being so close to the outside of the fan. Looks like that alone would restrict the airflow. You can see the much larger space around the fan in the 5Kw model. I've just bought an "8Kw" heater (I knew it would only be really 5Kw), and was also going to buy a 2Kw for my boat cabin, but now I wont do that. An interesting question is, "Where is the extra heat "vanishing" to" ??? If the same amount of fuel is being consumed, and the burn is very efficient, resulting in minimal CO, then the same amount of heat MUST be being produced in the burn chamber. I wonder if it's all going out the exhaust ???????? Might be worthwhile checked the exhaust temperature too. Of course the heat would be a combination of exhaust air flow and temperature, so to get accuracy both would have to be measured, but that might melt your anemometer LOL. I wonder if the smaller fan rotates faster and move air through the burn chamber faster, and thus give higher velocity air out the exhaust.

Brilliant presentation. It all makes sense now! Thank you John

I'm relieved to for once not had to have had my ear bashed by yet another annoying American or British accent, especially considering much of the innovation in the area, such as the Afterburner, comes out of Australia too.

2:30 i dunno if ur an expert but you forgot to say thy the larger heater will still burn alot more due to its size

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Yes. The important thing is “hard” fuel hose. In commercial in an engine space you use thin copper fuel line. JMcK

I don't actually need one of these heaters right now, but watching your videos I want to buy one just to play with it. Awesome stuff. I'm falling in love with these little things.

Just started looking into diesel heaters and really enjoying your very helpful videos. Thanks very much. Would never have expected the flow through was quieter so you've really taught me something very useful.

Thank you. Pleased you found the series helpful. JMcK

In the past, if you knew the password, you could get into the CPU, but there was no reset button back to factory settings and a lot of users got into serious trouble. Perhaps your heater has that feature cancelled. JMcK

Should the fuel pump be mounted with the output facing up? (air bubbles in fuel line BETWEEN fuel pump and combustion chamber?)

I can't believe how many testing instruments you have. Amazing!

I appreciate the amount of effort put into these videos. I am buying a heating solution for me and my girlfriend for our 1995 toyota hiace. I knew nothing about these machines until a few minutes ago. Thank you

hi , great vid , just wondering have u ever heard of the controller settings access fail , ? i cannot get into the settings to adjust fuel/hrz rpm etc , maybe this is a cheap generic controller (comes with heater) that hasn't got that feature > thanks ( mine has a cog symbol not wrench) cheers

Hi John, I noted the wire from the 4-position barrier strip to the master swith 29:55 is thicker than the wire from the heater to the 4-position barrier strip. Considering it is a short run, is it necessary to upsize the wires connected to the master switch?

I buy mine off eBay. Plenty of suppliers. In my search I generally put in “gaskets for Eberspacher D4 parking heater”. Most Chinese 5 or 8 kw heaters are exact copies of the German D4 heater. JMcK

Hey John, just want to say your videos are great. Can you provide where you purchased the better quality gasket pack from

Hi there You can go into the menu in the ECB and make changes. There are a number of people online who will give you the password. I no longer do that because I have seen too many users get themselves in a whole lot of problems. There is no reset button back to factory settings. If your set up is correct, and your issues are with a new heater, I suggest you ask for a replacement as you could have controller or ECB issues. JMcK

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Hi Russell. Yes you can run 4 meters on the delivery side of the pump, but it must be narrow bore hard nylon fuel line. Shut off valves readably from hardware stores, compressed air section, or small engine suppliers. I generally buy mine at Bunnings or Supercheap. Have you watched the motorhome videos? JMcK

hi John what’s the maximum tube run after the pump, could you use the the 4 meters of tube like you demonstrated and what sort of shut off valve do you recommend and where to purchase

Always want to learn from learned elders. Hard to come by these days as I get older.

Hi mate how can we change the fuel pump pulse rate and slow it down and speed fan rpm up this heater keeps blowing flame out of muffler, air cleaner is free brand new unit

Hi John, hoping you can help me with an issue with my non-heating heater. It’s a 5kw and I have the LED controller that’s showing no errors. I start it and it runs well for about 10 minutes and then shuts itself down. I have cleaned the air valves into the glow plug, replaced the atomizer and cleaned the spot out as best as I can. Can you shed any light on what I might be looking for please? Many thanks. Love your videos, they’re very helpful. Cheers, Brett (Sunny coast)

Hi John. My tank is above my heater location so gravity feed to tank and using a larger size hose 4mm from pump to heater as from tank to pump. Will this cause any issues. Was set up this way and have just changed heater for a new one. Havnt used yet...cheers

I have used kerosene on a different type of burner and to solve the wear problem on the pumps we just added 2 stroke oil to the kerosene. We mixed 5lts 2 stroke to 2000lts of kerosene

John - you bloody ripper, loving your informative videos. Have you done anything with wrapping exhaust and even inlet pipes for thermal and potentially noise efficiency? I’m thinking of the cloth heat wrap type stuff for the exhaust and maybe a foam wrap for the inlet air. Cheers again mate Mark

Hi john ive watched your vids for few years now you do a great job mate, i have fitted 4 of these heaters now all good , but now my mate and i fitted one to his caravan and it runns good but when heats up runs a bit of light black smoke , and a consistent flame about 4 inches long from the muffler running on flat out on 10, we slowed it down to 8 it stopped flame and light black smoke, but after 10 minuets it started again smoke and flame what do you think can be problem or what to check, regards peter

Hi John, what's the name of the recessed switch housing 38:23? I didn't find it online.

Hi Jay, I only put the controller wires in conduit to be tidy, but protection is another benefit. Currently sailing in the Med, so internet connection can be delayed. JMcK

The switch does have a negative wire to work the light when it is switched on. Next to the heater switch on the seat front you will see a 12V cigarette outlet. I have taken a negative switch lighting wire from that outlet. JMcK 42:09

Hi John, 29:41 why is there a short piece of black wire going from the left terminal strip into the switch?

Hi, where could you purchase the connector harness of the dosing pump? at 24:49 I saw you use such a harness to make a "jump starter"

HI John, So enjoying your videos, my background comes from Power Generation but still unclear how an Electro Magnet works on DC ? Thinking some form of oscillator in the ECU Looking fwd to your next subject. Cheers

Thank you John, had to work a lot of that out myself before I came across your channel. Your presentation and detail is marvelous and now much enjoy watching all your episodes, well done !

@johnmck1147 could you shed light on 16:01 why the incoming pos wire need to be protected by a fuse?

What intake filter did you use?! Awesome stuff. Thank you!

So do you recommend installing a filter prior to the pump? Or getting a pump that has a filter in it?

Hi John, Really appreciate your effort in all these videos. It gives many of us "instant knowledge" to tackle our own foray into diesel heaters. I was wondering if you could expand on connections of exhaust piping. You covered connection of fuel quite well and it would be nice to see your take on the best way to connect the exhaust pipe to muffler, bend the piping, extensions etc. The pipes that come with the kit are hard to interconnect and I have seen a suppliers manual that suggest cutting a slot in pipes prior to connection to allow "pull down" by the clamp. With your experience would be good to see what you think is best for sealing and longevity. Great videos, thank you again.

Great video What type or model sailboat

Thanks again for another very informative video. I have a suggestion/question. For those of us with Webasto heaters, we sure could use another series on them. Granted, the here will be a lot of overlap, but maintenance and controllers will be very informative. Thanks you.

Fantastic!!! Can’t wait to see the rest of the series.

Fantastic explanation and demonstration. Can’t wait to see the rest of these videos. Thank you so much!

I have the full function control have recently had issues with it going blank and shutting off the heater I know the power is fine the screen will come back on randomly. I’ve hard wired the plugs still has not fixed it

hi John, we have this heater in our RV and our Truck heating isnt working and I am wondering if it is ok to have this heater going while we drive when its winter ? Or is that dangerous?