Is the 5kw heater the same as the 8kw or 2kw?

[@dallasjohnson3809]

Thank you for posting all these videos in regards to the diesel heaters. You have been very helpful on more then one occasion. 🇺🇲

[@Retiredkiwi]

I have a 5kw and a 8kw, both are identical in all ways (white powder coated all alloy shells, with chrome grill ). They both drink the same at max settings, which is 2 hours per liter of diesel, and both cycle back at the same maximum exchanger temperature (one controller will show it). So i think neither can be any more than 4 - 4.5 kw's at that max consumption, comparing to Eberspacher spec's. I have both set up side by side for testing, and Have run then flat out for hours on end, and burnt thru 30 liters so far between them, as i wanted to know how reliable they are. Only fault so far is one dead glowplug, which i got working again by twisting connections on it,

[@gernotvetter324]

at around 500 ml per hour, your performance assessment fits. my 8 kw consumes 730 - 760 ml / h, depending on the intake temperature.

[@lizardfog]

That seems correct. 500ml -> 38MJ/2 released as you burn the diesel in an hour which give a theoretical maximum power of (38*10/^6)/2/3600=5278W. In other videos they claim to be able to squeeze 500W from the exhaust gases so not more than 4778W useful heat.

[@danielrudilille]

My ears are screaming when you drag those on the table, destroying their new shape on top of de cases..

[@philtowle4683]

We once had an inspector drag a stainless polished part across a similar bench. He got some proper abuse off management.

[@TStriegel1977]

You do an Excellent "Mrs. Doubtfire"! 🤣

[@darrenhill4022]

I figured as much too. Going on fuel consumption my "5kW" was running about 4kW max. I got in its head and cranked it right up but things got a wee bit too hot. Shit smelled hotter than seemed healthy and the plastic vent thing got all bent out of shape.Backed if off to 7.4 hz which I figure to be about just shy of 6kW, which suits my application thanks for your antics, fun to watch

[@manic_tinkerer]

Just bought a 5kw from amazon, received in time for someones crimbo present, looked at unit clearly marked on side as 4kw yet the same exterior dimensions as your 8 but with a even larger outlet diameter. But it has the older 1-4kw style controller, and the silencer it was advertised as coming with was missing also. If the silencer was present it might have been acceptable if the max fuel could be bumped up into the 5kw range, but omitting the silencer also is just taking the seller taking the p.

[@DEVONLAD11]

you will never get 8kw out of these heaters. 4kw at best flat out at 8hz and fan on high altitude. i put one against a 3kw gas heater and the gas heater pissed all over it. But for £75 they are a dam steal. They will run on virtually anything that burns.

[@manic_tinkerer]

@@DEVONLAD11 Its all good, I run it on max (5) for 20 minutes, then turn it down to 3 to maintain temp when its zero c outside so even 4kw is fine and its into its second year now still working when I need it, though I run it on clean white diesel because I rarely do more than 2-3l a week and I always have a drum of it about. And it has a massive advantage over traditional lpg heaters, it doesn't fill the air with moisture formed as part of the combustion process. That matters for me as its heating a workshop...

[@PeterJavea]

The watts are determined by the volume of diesel injected. Each pulse of the fuel pump injects 0.02 ml of diesel. If one or the other is set to the max setting of 5 hz /sec that's 0.1ml of diesel injected per second, to burn. The pump injection volume and frequency determines the kw output The 2 units do work (5kw and "8kw"). Both have the identical pump. Both have the same maximum impulses per second. Both do the same thing. It's a pity some companies do this exaggerating as we clients may feel warm, but cheated....

[@madisonrose4548]

Thank you sir I’ve been learning a lot from your videos! I have a “5kw” on the way and I’m excited bc I feel like I’m prepared somewhat, thanks bro!

[@gadget8066]

These are actually 4kw-4.5kw units, you can get 5kw if you run them flat out on max setting for a long time but they will over heat/melt and shut down, the manufacturers selling them as 8kw are using false advertising and have just relabeled 5kw units.

[@johnphillip1711]

Seems to work well and doesn't have noisy bearings ala the 2Kw Still trying to unearth my tripod from whereever the mrs has "put it away" and debating at the same time whether I swap the clutch in the Saab or I go and buy another cheap car....decisions decisions.

[@stevecarlisle3323]

I think the 8kw and the 5kw are the same, but the controller is set differently. Some sellers are not even putting stickers on. My 8kw just came in, and all looks fine. The fuel line and fittings are the desirable items.

[@reubenk7331]

Can confirm had 2 different problems with two different heaters. Can't ship them back due to hazmat, but at least in the US, I got refunds on both heaters. The first one was a 5/8kw which I knew meant it probably put out 3-4. Second one I ordered was labeled as an 8, and it has way more heat and output than the "5/8kw" I had gotten the first time.

[@robertsmyk4102]

Gee! The max fuel delivery rate is adjustable as is the max air flow rate to feed the flame and dissipate the heat so the 2 kw unit definitely has a smaller heat dissipating chassis and fan. When we overdrive any unit, the chassis temp may exceed the safety setting and the thermal sensor will shut it down so the heater would not perform as expected. The fire pot may also have more capacity on the larger unit. Always buy the larger unit (I saw a 12 kw) unless you want to conserve fuel. Maybe the smaller unit runs quieter.

[@krimke881]

You buy bigger on the theory that its built to last longer, it has more capacity in all terms. But what you want is the most efficient. So in this case you can buy the biggest and downtune it to save fuel, or the smallest and change the motor bearing to get it to shut up. In a motorhome, a truck and a van, the 2kw will heat up the space real quick.

[@underwoodblog]

@@krimke881 When you run the bigger ones on low for long time, it will build up soot very quick!

[@underwoodblog]

@@robogare I suggest to run the intake to the outside to. This reduces noise and some fumes on startup and shutdown.

[@gr8deals2do]

You got me thumb up for the trumpet! 😁😁😁👍 you're fun!

[@spacesaverbob]

OK so, I'll likely never have the need for a diesel heater (although I think they're awesome and if we still had our Motorhome, I'd be right on it) but I simply had to subscribe at the precise moment when you said, "If I die in this video, I loved you all". *snort*. Belly laugh. Right there. Carry on!

[@bennyjrgensen7778]

The pump gives 0.022ml per pulse, 5.5hz is 436ml per hour, it may be stretched to 5kw, I have a feeling that they are sold a little inflated.

[@DavidMcLuckie]

A little inflated? I've seen them labeled as 12KW. They are a bit generous with their ratings. :)

[@ek8710]

Just like chinese batteries. Always assume the stated capacity is 2x the actual. Those sneeky chineeses

[@jujujay]

hey dude. great films as always & full of details.. do you know if we could run 5kw heaters to start up from EcoFlow River 2 Max ? thanks

[@rshutterbug47]

YOUR Test Are EXCELLENT , Thank You , But What Are The Cost of Each & Hos Do I Order One ( ThNks )

[@amojak]

thinking of heat loss, they should design the exhaust pipe to wrap around inside the case before coming out so the airflow also picks up the heat from the exhaust.

[@DavidMcLuckie]

That would indeed make for more heat output, but I know why they don't. The condensate that would form inside the pipe is corrosive and would rot the system.

[@evelbsstudio]

I have just ordered mine to heat my shed because its well insulated and its like a bloody freezer in there.. I am planning on using the exhaust to heat water to help keep the frost out of shed 2

[@maniyan_wanagi]

So many videos, so few informative - yours are appreciated - plus, your way of speech reminds me of my great-grandmother - thanks for the memories!

[@palegelandsdal8556]

You hold the diesel pump upside down. The contact should be upwards, at an angle between 15 and 35 degrees

[@L.R.D]

So When you do the maths: 1 gallon of diesel has 139000btu of energy. So 1L is about 10,5kw/h In the last video you said that it used approximately 460ml/h. That gives a theoretical maximum power of 4.5 kw/h So I think the 8kw is a upsell from a 5kw.

[@DavidMcLuckie]

Yes, their numbers are on the 'creative' side. I did see a 12kw verison as well. Most likely still a 5kw.

[@icsp2]

I think it's physically too small to be an 8KW look on Planars site at their 8KW and you will see what i mean.

[@Retiredkiwi]

I have an 8kw and 5kw mounted side by side for testing(both are identical size etc, and have 75mm air outlets), and with both set to max 8hz (after setting up max in settings) and running non stop, they each drink .5 liters approx per hour, and cycle pulse rate back at the same internal maximum temperature, it is clear mine are definitely exactly the same units. My rough testing of air flow rate and delta T, suggests about 4kw is all they produce. That is my gut feeling too, from their actual room warming performance (me being a heat pump tech for 30+ years).

[@howardosborne8647]

It would be interesting to know what the Max pump HZ rate is for the 8 kW when it is turned up full power. My 5 kW is tweaked and I can only adjust the HZ rate to a Max of 6.6. It won't go up any further than that.

[@mrwiever]

It's true. The same calculations about 8kW heater from me, Poland.

[@suepaulbrown9512]

Hi i think it must be down to the fuel pumps are the numbers on them the same.

[@johnmilner6375]

Dave, what are the optimal hertz and fan settings for a 2kw heater running on american diesel ? maybe the only difference in heater is the hertz and fan settings..

[@michelschoenbachler5079]

2kw, 5kw,, 8kw??? does that mean the heat that's put out into the room you're trying to heat? or the total heat produced - room heat + the heat lost out of the exhaust??

[@DavidMcLuckie]

Yes. It's more likely they used the fuel consumption to work out the KW rather than the actual amount transferred into heating a room.

[@gernotvetter324]

That's a good question but if you run a 2 kw electric heater, will 2 kw heating power come out at the front? my 8 kw heater consumes about 730 - 760 ml of diesel at full load The exhaust gas loss is reduced to around 60 ° C due to the air / water heat exchanger. So the heat mostly stays in the room / water the output power of an electric heater varies with the mains voltage. however, i have no idea how stable your 110 volt supply is. With our 230 volt supply, fluctuations of -10 volt are possible. So then less "energy - output" of an electric heater With diesel heaters, the current / voltage hardly plays any role, if the flame burns, it burns automatically but what plays a major role with d-heaters is the intake temperature ..... cold air of the same amount contains more oxygen than warm air so your question is very difficult to answer in principle, it does not matter whether 2 kw of energy is released from electricity into heat or 2 kw of fossil fuels. Feedback geben Verlauf Gespeichert Community

[@rudivandoornegat2371]

I agree: Diesel energy = exhaust waste heat + produced usable air heat 8 kW = 2 kW + 6 kW -> 2 kW heater (heat exchanger with smallest vins and smallest fan diameter) 8 kW = 5 kW + 3 kW -> 5 kW heater (heat exchanger with medium vins and largest fan diameter) 8 kW = 8 kW + 0 kW -> 8 kW heater (heat exchanger with largest vins and largest fan diameter) Temperature of air vent vs exhaust pipe should be compared. Fuel consumption will be the same 8 kW on the high setting for all models, according to this hypothesis. The prediction is that the 8 kW will have the coldest exhaust gasses, while the 2 kW heater will have the hottest exhaust gasses. And you could repeat this experiment for the low setting. I think that the fuel pump rate is constant in either the low setting or the high setting, while the ECU controls and varies, the fan speed for optimal combustion. I wonder if that's true?

[@DrRideWell]

Hi David, thank you for such a great vid, it answered some burning questions I had! If I could ask some advise please, at this moment in time who would you reccomend as a suppiier? I have a LWB Sprinter van, would a 8KW heater be the best option?Many thanks Chris.

[@DavidMcLuckie]

Still a bit of pot luck. If you get one reasonably priced get it from Amazon, then the seller has to abide by Amazon's return policy if it doesn't work. Test it works before you fit it. For a big van like that I'd go with the 8KW (the larger of the two heater sizes).

[@john-xx8nc]

Hi there great informative vid again Iam thinking of getting one but there's 20 or 30 £ difference in prices could you tell me which one you would recommend It's for the van and also a shed in the winter all the best

[@DavidMcLuckie]

On eBay at the moment I see the 5kw and the 8kw are a few pounds apart and the 8kw is actually cheaper.

[@camposvazquez]

@@DavidMcLuckie mr. Mcluckie.. I am looking to buy the most efficient heater for 176 cubic feet(22' toyota rv).. 2k on low setting... 5k on low setting or 8k on low setting... Which unit will be the most efficient heater up in canada? Also.. Do you have a patreon or paypal? Your information has absolutely been helpful when deciding on these heaters... Thank you

[@trevorford9432]

I have a 3.2kw webasto an old one and that is massive compared to the 8kw we've just purchased of Ebay, I've had the webasto for some years but the glow plug has just give up and the only one I can find is £145 just the glow plug that is, might have to engineer another g,plug in.

Do you remember how efficient fuel pumps were? in 5kW and 8kW versions ; the pump I know has 22ml/1000 cycles ; 22 *5Hz *1000 /3600(sec/h) = 400 ml. ; 400 ml * 0,83 kg/l ON =0,330 kg/h ; 0,33 *43MJ/kg / 3,6MJ = 3,93kW. To sum up, if you have a 35ml/1000 pump with a frequency of 6.5 Hz, you will get a power of 8kW. The most important question in this test: what fuel pump do you have?

by the way, I saw 65ml pumps on Amazon (at 6.5Hz = 15kW)

[@DavidMcLuckie]

In a much newer video I cover this. You can get the fuel in, but you can't get enough air in to combust it properly. At 8KW it makes a lot of black smoke and carbon monoxide.

@@DavidMcLuckie I haven't seen this file yet, but it's true, 14.5 kg of air (approx. 5 m3) is needed to burn 1 liter of diesel fuel cleanly.

[@BeezyKing99]

Hey David, been a subscriber for some time now... I have a question, what’s the power draw on startup again? Not sure if you’ve mentioned it or not, thanks in advance.

[@DavidMcLuckie]

Between 8 - 10 Amps

[@BeezyKing99]

@@DavidMcLuckie Thanks again.

[@chrisball666]

Hi David, great videos, great help, thank you. Would you be able to set up a 5 and an 8kw heater, run them at the same pump and fan speed and see if there is a difference in the cabin air outlet temperature? Also see if the exhaust temperature is different between the two heaters at the same pump and fan speed?

[@DavidMcLuckie]

Hey Chris. There isn't really such a thing as a 5KW or an 8KW heater. Only two sizes exist and they are physically different sized heaters. The smaller body ofter referred to as the 2KW and the larger the 5KW. I've seen the heaters marked all the way up to 12KW and it's nothing but numbers printed on the outside of the box. The 5-8KW heaters are exactly the same and both will output the same heat if you set the settings to be the same. So don't get scammed if anyone is selling an 8KW and charging more for it.

[@chrisball666]

Hi David, I saw a video from the guy, John, in Australia and whilst he said the same as you, his video showed that the 8kw heater had more fins on the exchanger than the 5kw. I wondered if this would increase the heat transfer rate and increase the delta T. However, since then, I've found a video by the same guy, running an 8kw at 5.5Hz and whilst the delta T was up by about 4 degrees compared to the 5 at same pump speed, he was concerned about casing over temp. So throttled back. So I guess the heat transfer is marginally improved but the physical size of the exchanger limits the heat it can safely deliver. Thanks again for the videos, much appreciated. Stay safe, Chris

[@realcanecorso]

@@DavidMcLuckie You're wrong, the 8Kw heater has a different Oil Pump.

[@billienomates1606]

I ordered a 5kw tricklicks diesel heater, which has now arrived. No where on the box or the heater does it state 5kw or anything else. I think I have been sent a 2kw. Are there any measurements I can take to confirm if it is a 2kw or 5kw unit. Such as internal diameter of the exhaust or combustion air intake or even the internal plastic hot air outlet vent. I would appreciate any assitance, thankyou.

[@japekay]

Are the air intake and exhaust apertures the same distance apart on the 2KW, 5KW and 8KW? I.e if you have a 2KW installed can it be swapped out by placing in same apertures?

[@DavidMcLuckie]

Yes, the mounting plate is the same between them all.

[@geco4]

Why did u say “2kw”? I bought 2kw (small) for my mercedes E and i run it on max power 30 minutes before i start driving and it is still not warm enough in car. I tought it would be hot in car. Can be something wrong with my heater or it is just to small?

[@fedehitech]

why didn't you take a temperature measurement to know if there is any difference between 5 and 8?

[@DavidMcLuckie]

You can adjust the controller in the admin settings to get the power output you want. The heaters themselves are physically identical.

[@crisrose9707]

it looks to me like the biggest difference is the base of the unit where the body fits the heater, in the 2kw it rattles around a bit and the 5 and 8 seem better fixed with that large protruding block....which makes me think my "8kw" is actually a 2kw....

[@DavidMcLuckie]

Easy to spot the size difference. Small body 2KW the ports are almost exactly in the middle, Large body 4KW the ports are off to one side.

[@crisrose9707]

@@DavidMcLuckie unfortunately I only have the one so I cant compare :/ I'll have a look though!

[@stanRmeyer]

probably going to be a difference in size of the diesel metering orifice.

[@DavidMcLuckie]

The 2kw will have a smaller dosing pump yes, but the 5kw and 8kw have the same pumps. The big 10kw water heater has a bigger pump again but also has a bigger burn chamber.

[@freesaxon6835]

I wonder if you can help me with this one ...my diesel heaters been running fine but I've noticed on the pressure side from from the pump there's a section of air in the pipe. It's also running a little colder. Any to reprime it haven't worked. What are your thoughts ?

[@thelightworshipper9687]

Hey David, I understand the glow plug on startup to heat up the burn chamber, why the glow plug when the unit is turned off? Isn't the burn chamber already hot, why heat it more before shut down?

[@G-ra-ha-m]

It burns off any soot so it works better next time you use it.

[@ryanclonce1466]

Also helps it to keep the aluminum from cooling down to fast or uneven to prevent cracking the casing

[@eksine]

Please can you do a fuel consumption test between all 3 and also how much heat does each one put out on normal settings, meaning not at max heat all the time

[@DavidMcLuckie]

But there aren't three. There are only two sizes of heater. Heat output will depend on what you adjust the settings in the controller to.

[@CotyRiddle]

i think they get the different ratings from the amount of fuel they use and the thermal mass.

[@underwoodblog]

@@AndreasEUR The hz setting is not constant, when the fan can't cool down the heater chasis, pump slows down.

[@andrewbowden1076]

Are we sure that the fuels pumps are identical? I say this because if the controllers are set to the same settings but one pump has a larger plunger, than that maybe the difference. I just received my "5KW" today, but the sticker says "1kw to 5kw", which got me a little frantic cause I thought I received the smaller version. But it is in fact the larger case. I have not looked at controller settings.

[@DavidMcLuckie]

Do you mean between a "4" and a "5" or a "5" and an "8". We've got a later video explaining why the "8" doesn't exist.

[@andrewbowden1076]

@@DavidMcLuckie Not so much between 4-5’s but the smaller 2, 5 and the 8. Sorry if I missed that video, you have sooo many on these things! I have watched a bunch of them! Thanks for all the time, money and effort you have put into these! It’s a trove of information!

[@lscamera]

Depends on the controller and in some others, in the mother board.

[@DavidMcLuckie]

And the physical size of the heater, settings on the controller.

[@CormacOSheehan]

Hey David, thanks for the videos! I was advised to buy a 2kw one for my van (Sprinter, about 18m3 volume including cab) as the 8kw one would need to be run on low or it'd be too hot, and that because it's run on low, it could soot up eventually and need to be fully stripped down to clean. So I ended up ordering what was advertised as "2-5kw" on ebay, but it arrived and it matches the 8kw dimensions you had in another video (380mm long and 75mm diameter on outlet). So now I'm wondering, even though I got a good deal on what an 8kw would usually cost, should I send it back or try sell it and go for the 2kw one instead to avoid any of the "soot up" issues later on? It's hard to tell also, but the exhaust and inlet holes attached to the heater look the same size, so maybe it could be fit, and if I run into any problems with sooting down the line, it could just be an easy swap out if I get a 2kw one to replace it? Any advice would be great :)

[@DavidMcLuckie]

Inlet and exhaust are the same size between the two heater bodies. I'd fit the heater and buy a CO meter and tune the heaters LOW and HIGH setting to produce zero or almost zero CO. Less CO means less soot. I've just finished a video on it. :)

[@CormacOSheehan]

@@DavidMcLuckie awesome, thanks a lot for the reply, I'll check out the new video :)

[@jamesw3190]

You have great videos. I would be interested in knowing if there is a difference in cfm of the circulation fan.

[@DavidMcLuckie]

As one is larger than the other I would expect so.

[@jamesw3190]

I would believe so also but haven't come across any videos where the cfm has been measured and compared.

[@robertoviana514]

I purchased the 8KW and it says “1kw -8kw” on the label?

[@jaaa2055]

Hi, i have seen on Aliexpress 3kw version. Have you seen it ? Is it the same as 2kw and same burning chamber ? The same situation as 8kw and 5 kw?

[@DavidMcLuckie]

The best way to tell is from the dimensions - static.wixstatic.com/media/4ab75e_0ab5e2451ed74680a1fae6b2e0b14547~mv2.png/v1/fill/w_640,h_392,al_c,q_85,usm_0.66_1.00_0.01,enc_auto/4ab75e_0ab5e2451ed74680a1fae6b2e0b14547~mv2.png

[@atticman2011]

Hi David, Great Videos, i just bought a 8kw, not tested yet, was thinking about pipeing straight into my home heating oil tank ? Have you tried running these heaters on heating oil.

[@DavidMcLuckie]

Heating oil, Kerosene, Paraffin etc all works great.

[@SubjectXXX]

@@DavidMcLuckie which one was least fummy? Had least black residue? Only depends on a pureness of fuel?

[@bigideafilms]

Would you measure the 2Kw & 5/8 Kw please - I purchased 1 2Kw and and 8Kw and they are both the same size. So do I have 2 8's or 2 2Kw ??? Thanks. ( Really great videos BTW )

[@DavidMcLuckie]

The 5KW is 38cm end to end the 2KW is 32.5cm.

[@bigideafilms]

@@DavidMcLuckie Thanks indeed. Looks like both heaters are 2Kw. Very disappointing. Looking forward to a wound coil Exhaust Heat recovery video ? ..

[@DavidMcLuckie]

I still haven't managed to coil a good sized pipe tightly enough. Mostly making holes.

[@bigideafilms]

@@DavidMcLuckie I saw a video where he filled the pipe with water and sealed (temporarily) both ends. Impossible to crease then.

[@egonmarder9168]

I don't know about your blowers. But I have two Chinese blowers 8kw and 5kw side by side in the garage. The difference between them is big. If 5kw works at full power, then 8kw works at medium power or even level below half to achieve equal figures. If you buy it, it's still 8kw.

[@DavidMcLuckie]

Nope. We've been through all the tests. You can't get the heater to output 8KW.

[@raymondj8768]

i paid $ 145. for an 8 kw off ebay and its all aluminium the heater and the 4 holes coming out aldo its an all in one job with the red case .

[@davidmackintosh3291]

Hi David Can you recommend who to buy 5kw from as so many out there ! cheers mate brilliant vids

[@DavidMcLuckie]

Not really. The seller I got mine from on eBay doesn't exist anymore the last time I checked.

[@thomas1112002]

So what can you spray in to it to clean any soot build up to save dismantling it

[@mikebuxton1002]

I have a Webasto Diesil boiler running a wet radiator system on my Widebeam boat. Do the Chinese make an equivalent like these hot air heaters. I not found one as yet?

[@DavidMcLuckie]

Oh yes. Plenty out there. s.click.aliexpress.com/e/_DCcdfm7

[@markwatson4216]

David, I have a VW T25 so fairly small camper. Can you suggest which heater to buy? Can you put an affiliate link please?

[@meeeeeeeeeeeify]

I was going to ask the same, but for my small transit! Don't mind about a link, but would love to know 2kw vs 5kw vs 8kw!

[@DavidMcLuckie]

We fitted one of the larger heaters (5-8-10-12KW) to a Transit and I've been told it's too hot. It might be different if you are camping at -20 in an uninsulated van though.

[@meeeeeeeeeeeify]

David McLuckie quieter than the 2kw though?

[@DavidMcLuckie]

Hmm, once the heater is boxed away you can't really hear it anymore.

[@meeeeeeeeeeeify]

David McLuckie .. Blast - the ‘8’ kw has been ordered already! Suppose I can just turn down the temp on it so I don’t get too hot? Or use the thermostat?

[@608trucker4]

Holy sheeet that one came with instructions

[@makingcookingfixing]

1 liter of diesel equals to approx 10kw energy. So basically if you want a 5KW heater, you need to set your 22ml pump at 7hz to use half a liter, you could technically make this a 15kw or 20kw heater, just pump diesel into it (you can buy a bigger pump, I have a 0.48ml one

[@DavidMcLuckie]

There is a stage where you can no longer get enough air in and you're just making black smoke.

[@makingcookingfixing]

@@DavidMcLuckie Yes, would be interesting to see if he could test out with the oxygen analyser where the limit is

[@LordGryllwotth]

@@makingcookingfixing use some infrared sensor on the exhaust that starts reading when the heater is hot and you can start increasing the fuel injected. You can get some temperature resetable fuses to avoid a burndown. Or use aluminium strip as a fuse

[@aengus.l]

What’s the most quiet one for a small van that can plumb into the vans fuel tank

[@rudikessels9492]

if im buying gaskets ; are they all the same ?

[@MarioMotoVlog]

Make a video on how to increase the power in webasto 5-8KW. I have set it to 85W by default

[@simonwass6315]

Is there such a thing as an 8kw? Fuel consumption figures on most sales pages show 5kw max (0.6l/hr) despite what rating they advertise - so the 8 is just a 5 that maybe you can overfuel?

[@DavidMcLuckie]

Negative. Only marketing. I've seen them stickered as 10KW and 12KW. While technically you can overfuel, you'll waste more fuel than it can burn properly.

[@michaelhutton7616]

Question. Is the orifice size the same between the 5Kw and the 8Kw? A slightly larger orifice would indicate more fuel is burned, thus a larger rated heater.

[@DavidMcLuckie]

Which orifice? More fuel can be burner by adjusting the settings. As that's the only difference.

[@evelbsstudio]

You can change the flow rate of the fuel pump in advanced settings, the thing is you would want more airflow because if it runs rich you will get more carbon deposits

[@avinashseerungum1484]

Hello David. I plan to purchase a portable one for my extra small caravan (has metal casing + diesel tank) and then be able to move it to my workshop caravan too. BUT these are advertized 5000Kw that sounds really too much for an insulated small caravan ! I estimated the heat need about 500W only.. So are these "5000 Kw" units, can they deliver lets say, 500 W in the real world ?? I've read one wrote some 5Kw purchased on amazon did 300W to 5KW ?

[@jaybee258jb]

I turn my 5kw heater down to 0.8hz. that is burning about 800w of fuel per hour. So yes, you can get about 500w out of it. However it makes black smoke so is burning very inefficiently so maybe less than 500w. I worry about soot build up, but maybe the 8.0hz startup cycle burns it out

[@avinashseerungum1484]

@@jaybee258jb i purchased it and used it. Mine has minimum setting at 1.2kw if I remember well. It quite noisy and still too much heat for a very small caravan… I use it only to heat a working space sometimes, on 230 V by the means of a computer supply. It needs very stable voltage otherwise won’t work.

[@jortatzema3139]

Thx for all the videos! Have almost cross eyed vision by now. Can’t figure out what heater to buy for my transporter swb popup-roof. 2kw vs 5kw. Help!

[@chriscappuccio]

buy the 5kw and turn down the frequency

[@paultro8457]

Does a 2kw use the same size gaskets as the 5kw? Need to order a set for my 5kw heater.

[@DavidMcLuckie]

Negative. They are a different size.

[@duggydugg3937]

hard to hear the narrative.... does the 5KW orange heater put out 8KW ?

[@DavidMcLuckie]

Negative. There is only 5KW. 8KW is just a sticker on the outside.

[@Ken-pg2pc]

Are the glow plug and fuel pump all the same? Bought one mistakenly, rated at 24v, changed the setting to 12 volts and got 03 code. fuel pump read 22-24v. wondering if I should change the glow plug to match 12v and change fuel pump to 12-22v as well. What do you think?

[@DavidMcLuckie]

Negative. There are 12V and 24V versions of each.

[@Ken-pg2pc]

@@DavidMcLuckie thank you for your quick response.

[@mp-xt2rg]

I don't think any of them are 8kw. The fuel consumption is .64lh. the problem is a liter of diesel is 10kw so even if it were 100% efficient that's only 6.4kw worth of energy available. More likely it's 78% efficient and putting out around 5kw worth of heat. Classic chinese marketing way over spec things and hope no one can do math.

[@DavidMcLuckie]

Bingo

[@MrRatkilr]

i bought a couple 8000kw heaters price was same as 5000kw. 8000kw is 27,000 btu. One liter of diesel has 34,000 btu. Assuming you get 100% efficiency. You lose btus through exhaust gas going out. The fuel pumps in these heaters pump .6 or so liters per hour. So no way they are putting out 8000kw. 5000 would be closer to the truth imo. That being said I still love my heaters. Put out enough heat for my garage. Putting two in my garage and one in my house in case nat gas furnace and heater take a crap. Wont keep house warm enough like some people like in winter. But it will keep pipes in house from freezing and livable until furnace can be repaired. Going to scavenge heat from exhaust to get as much btus as possible. Air coming out to heat space is 170-180F and exhaust puts out 200-210f from one foot away from each. You cant keep hand in front of output at one foot for very long.

[@potbelly6940]

Would one of these heat a 8mx6m insulated tin shed or would I be better investing in a wood burner?

[@DavidMcLuckie]

Yes it will heat it. Not sure what would be cheaper for you to run or if you're concerned with the convenience of each method of heating.

[@ihaveriffs8261]

My 5kw is way too hot for my van even on the lowest setting. I have to keep waking up to turn it on and off. Will I notice a difference if I replace it with a 2kw?

[@amojak]

you have no thermostat ?

[@ihaveriffs8261]

@@amojak Not that I can tell... I’m not sure that my controller works properly but if I can set it to turn itself on and off automatically according to temperature then that would be amazing.

[@evelbsstudio]

In the advanced settings you can change the max min speed of the fuel pump, bet that's the only difference

[@DavidMcLuckie]

You can turn it up a bit. Be as we've found out in later videos it'll never be an 8KW.

[@pablogeilert5780]

What are the standard settings for both 5 kW and 8 kW? Min/Max Hz and rpm please

[@jnse78]

I wanna know the same thing 🙂

[@dansmith6990]

@@jnse78 I have the 5kw one from Amazon (I can give you link if you'd like, it was only $118 USD), Here's what I've found so far: When I get into the "advanced" menu using the 1688 code, I can set the Hertz to 0.8 at the lowest. The stock Hertz for highest is 5.4 but I haven't see how high it can actually go as even at 5.4Hz it's putting out an incredible amount of heat! For fan speed RPM, the lowest mine will go is 1500, and the factory set for High is 4300 (but I think you can go higher than that, but again I haven't adjusted it higher since it's alot of airflow) I've even done energy usage with my advanced battery monitor! :-) at 1.4hz (the factory set for low) it uses just barely over 0.5A, on HIGH (5.4Hz) it uses just over 3A. When I set the Hertz to 0.8 I didn't notice much of an energy decrease, since the fan speed was still at the lowest I could set it at (1500RPM) One thing I did notice that when I set it to 1.1Hz or lower, one of the red bars on the controller display went away, meaning it was running cooler than at 1.4Hz (which shows all the bars) Hope this helps!

[@dansmith6990]

@@jnse78 Oh, and start up draw for mine was 9-10 amps for only a few minutes. The same power draw happens when you shut it down too for only a few minues. With the unit OFF (but remember the controller stays on all the time unless you install a cut-off switch) I measured 0.05A

[@jnse78]

@@dansmith6990 Thanks for your answer :-) So the stock setting for high is 5.4 hz and 4300 rpm, for low 1.4hz but what is the standard setting for the fan at low?

[@dansmith6990]

@@jnse78 the factory setting for mine at low is 1.4Hz and 1500RPM, it's very quiet at that speed. I saw another video that showed they could lower their speed to 1450RPM but honestly you won't even hear a difference of 50 RPM's. If you have any more questions I'm happy to help! :-)

[@ionutzxpo]

hi david, can you tell us the dimmensions of the one that has 5Kw?

[@whatliesbeneathurbanexplor1631]

@David McLuckie i have a question i have a 5kw diesel heater. Would the 2kw settings work on the 5kw. I would like the 5kw to work the same as the 2kw if possible

[@DavidMcLuckie]

Nearly. There is only so low you can go before the burn chamber is not hot enough to keep the heater running properly and it pulses as the flame front goes out and re-lights.

[@whatliesbeneathurbanexplor1631]

@@DavidMcLuckie Thanks i think i will keep the same settings. And keep the heater on low or mid heat. It's heating a van so low should be fine

[@sabre6986]

The function as to how many Kilowatts is directly related to the amount of fuel burned in a specific amount of time. (per hour) Just like an engine a different size of injector would make the difference on the exact same frame. I would bet it is the only difference between the machines

[@DavidMcLuckie]

It's even easier than that. It's just a setting change in the controller that lets you add more fuel.

[@mustang9551]

Or bc there not same 5 same only 12v 8 allow 24v faster fan more over all heat

[@wattsupcarter]

Is it possible to leave a car battery charger connected to the battery while running the 5kw diesel heater to keep the 12vlt battery charged up. Any info will be great Thanks

[@DavidMcLuckie]

Yes. Although the 'smart' chargers might give up after a while as they wouldn't 'see' the battery as charging. But an old fashioned 'dumb' battery charger works fine. I've got mine on charge all the time and running the heaters.

[@paulsampson1523]

One guys saying 26 gals off fuel a month naa , been using mine for about 7 hrs a day for about 3 weeks used about 10 Ltrs of fuel 26 gals is a lot of fuel 😳and it’s a 5 kw , drinks like a budgie wea chapped lips 👄😆

[@krimke881]

And "mine" is the 8kw ?

[@paulsampson1523]

Yea mine says 8 kw but there the exact same as a 5kw ????

[@krimke881]

@@paulsampson1523 no

[@sabre6986]

@@paulsampson1523 A bigger injector in the same frame would do it. A liter of fuel has the same amount of energy as another liter of the same fuel. Only way to up the # is to burn more at a time ;)

[@underwoodblog]

@@AndreasEUR When your'e right, I calculate 50ml/h@6.5hz. I've read somewhere else that it's 100ml/h at highest setting (8hz).

[@MarcelSauder]

thanks for sharing. i like your videos!

[@mysurlytrucker7510]

Do you know if the wiring harness is interchangeable between the 2 , and 5 kw ,i recon the pumps will be different, does anybody know.

[@DeeFPV]

I have a 5kw heater but how do you tern it up so it works just like a 8kw as I am very confused how to set the ldc screen

[@DavidMcLuckie]

Short answer, you don't. I can reply with the long answer if you want.

[@krispeterson1021]

Why is my 5kw so much smaller than the new 5kw...my new 5 looks like an 8

[@artiegreer]

Hi. Just wondering if it’s possible to cut and extend the cable fir the lcd display as I have a similar heater in a box unit complete and wanted to extend the display into the cab of my boat to control from there. I need to extend by about 3 meters.

[@DavidMcLuckie]

You can extend them. But there is a length that is too long. I can't find/remember where the post was of the person that did it.

[@artiegreer]

@@DavidMcLuckie thanks for the reply. I measured again and only need about 6ft. I’ll give it a go. Enjoying your videos btw. Thanks again

[@artiegreer]

Extended the cable today as a test by 20ft using cat 5 cable and it’s working perfectly

[@mickd802]

Mine is clearly a 2 kw size wise but has 5kw on the badge !!

[@GoranMilici]

So how do you configure to run 8kw? Because I ordered a 8 and the guy sent me 5 and I didn't notice until after I installed it. He doesn't have an 8 so but only option is to send it back and buy a new one. Only problem is I need a heater now I can't take it out because I ghoul freight and I sleep in my sprinter, and it's freezing in the east and mid-west (6f temp. Last night). Do I just order a 8 kw LCD control panel? Would that work ml

[@DavidMcLuckie]

8KWs don't really exist. It's just over rating. I've seen them branded in all ratings now no matter what the size. There are two sizes, the small one is maybe 1-2KW and the larger 2-4KW actual output. I've fitted one of the larger ones into a standard Transit and it gets too hot. So I think you'd be fine, you can tweak the settings in the LCD controller but I've not made a proper video on that yet. I take it you've got the LCD controller and not the one with the rotary knob?

[@dildorun2007]

@@DavidMcLuckie If you did that video (8kW controller with 5kW heater) that would be awesome! Love your videos David! Always laugh when they start...HELLLLOOOOOO!😂😂

[@ancienttechnology7337]

What's the music you play at the end of the video?

[@coreyclark3619]

How long can I run the 5kw heater without having to start my vehicle to recharge my battery?

[@DavidMcLuckie]

That depends on the capacity of your battery. If it's your main starting battery I'd advise against it.

[@toddhodder]

Don't run this off your main battery, as they are not intended as Deep Cycle batteries, and merely for CCA as the primary purpose.

[@underwoodblog]

It draws high currents on start and stop (around 10A peak) and 2-3A on highest setting. So with a small and older battery at low temperature, you may get to a point where your vehicle doesn't start, in a few hours.

[@MrPlasma01]

how long is a piece of string.

[@noelhewitt7434]

I just bought a 2-8kw so will that b the same size as th 8kw or the 2kw and just turn up the power

[@texdog2772]

I took apart my 8 kw heater and found 5 kw stamped on burner assembly.

[@DavidMcLuckie]

I hope they didn't charge you more for an '8KW' version.

[@texdog2772]

@@DavidMcLuckie NOPE I replaced the 8 kw with a 5 kw and got same heater. a couple pieces of sand sized particles took out the 8 kw heater they got jammed under the inside fan and housing causing fan to rub make noise and overheat motor. They left grooves in housing like meteor crashes.

[@texdog2772]

I put a small prefilter casing over baffle to stop it from happening again.

[@krsl5837]

same size means nothing

[@howardosborne8647]

Right guys, if anyone needs to know where the largest stock of UK based spare parts are. David has absolutely loads😂😂

[@DavidMcLuckie]

I've got a great collection of 22ml pumps. :)

[@howardosborne8647]

@@DavidMcLuckiecoincidentally, that is about the dosage of Domestos that Trump was thinking of injecting US Coronavirus victims with. Drop the White House an email,they'll likely take the lot of your hands for top Dollar.😂

[@downunder5594]

I would like to know what the 8kw weighs as i dont have another to compare size, i have a 5kw

[@Retiredkiwi]

my 8's and 5's(have 2 of each now) are identical weights and components, and measurements, and heat outputs, only difference was one 5 kw came factory set to a max of 5.5hz (approx, was 2 years ago), which i reset to 8hz in programming - (mine are 1688 for code), and i used 1.5hz as minimum/2450rpm i think - at sea level, and run very clean, with display in the red bars even at low output(settings from my notes back then, i think that's where i ended up leaving them) - i also tried a larger pump for a while, but could never get it to run clean and reliably thru out output range. Fairly sure the 2kw has smaller dimensions (length width and outlet diameter) . i expect weights will vary slightly, depending on if its a full metal shell/body (like all of mine), or some parts or all of shell are plastic.

[@DavidMcLuckie]

There isn't an 8KW. Only two sizes. Easy to tell apart. Small one has the inlet/exhaust in the middle, larger one the inlet/exhaust if off to one end.

[@anothersomebody8195]

Hi David, I thought I heard there are two versions of the diesel heater modeled after two of the name brand heaters (webasco, eberspacher, planar, or espar (sp?)), and kne of them is easier to clean the sooting on. Have you heard this, and do you know which is the better design, and how to tell them apart from a seller's photo?

[@dansmith6990]

All chinese diesel heaters are clones of the Espar Airtronic design.

[@anothersomebody8195]

@@dansmith6990 Ah, it must be that the comments I read were interpreting the smaller and larger sizes as different types.

[@newbiebaker]

@@anothersomebody8195 the larger one, eberspacher copy, easier to clean. 2kw one webastos copy. from what i saw on yt

[@pete7894]

My 8kw goes up to 5.4HZ, so a bit higher the the 5kw @ 4.3kw.

[@DavidMcLuckie]

I've got a 2kw that goes to 5.5hz. Sadly it's still not able to burn all that fuel.

[@whatliesbeneathurbanexplor1631]

@David McLuckie what amp fuse should i use when running off a 12v lesuire battery Thanks

[@DavidMcLuckie]

15A should be fine.

[@whatliesbeneathurbanexplor1631]

@@DavidMcLuckie sound thank you 👍

[@jodyallenbaugh9427]

look up diesel heater settings 1688 then you can change settings

[@DavidMcLuckie]

Yes, 1688 is the PIN for the admin settings on the LCD controller. From which you can adjust fan RPM and pump pulse duty.

[@jodyallenbaugh9427]

Have you played with the units after using the pin to unlock the controller. Just curious

[@pauliuslikas4299]

Why some 8kw is 5.4Hz other is 5.5Hz?

[@trebby9198]

Hi, Dave, Having a problem with a new 2kw heater, it starts and runs OK for about 4 hours then E8 fault restart, and it runs again for around 4 hours. Changed the green tube for a ridged one, pump is fitted with the out let at the top, any ideas?

[@DavidMcLuckie]

Is it running for 4 hours, getting up to temperature, then going to low setting and then going out?

[@trebby9198]

Hi, David, it starts slows down runs ok for anything from an hour to 4 hours it gets up to temperature then E8 press start it works again.

[@DavidMcLuckie]

That is weird. E8 is a flameout. Which usually means it has run out of fuel for some reason. One reason being to low a tune and the burner flame dies and won't stay lit. Another could be the fuel pump. But the fact it relights straight away has me puzzled.

[@trebby9198]

@@DavidMcLuckie there's no priming, just a straight restart after it has cooled down

[@onthelinuxway]

is it very noisy? I mean, could you sleep next to it?

[@DavidMcLuckie]

I can sleep next to a running AC unit, so I'm not the best to ask. :)

[@fyter889]

All you hear is the fan running on low speed. These units were installed directly under the bed in my big rig. I installed the same way in my VW bus. Definitely quiet after the initial heat up time of about 5-10 minutes.

[@Retiredkiwi]

Reasonable at low power, very loud at full power. Basically its a tiny fan, screaming at high speed, trying hard to move a lot of air. Hence a heat pump is silent by comparison, due to its large fan turning relatively very slowly, for same amount of air flow.

[@mannyfragoza9652]

i bought the 8 kw unit but someone on FB said i really have a 4kw unit . hmmmm i dont know what to think now?

[@DavidMcLuckie]

There is no 8KW. Only two heater sizes exist. While technically you can dial the fuel up and make it burn 8KW of diesel, most of that ends up as soot inside the heater.

[@mannyfragoza9652]

@@DavidMcLuckie ah i see