Chinese (5kw )air heater

Offgridone said:
Thanks that's a lot more than the Chinese say lol.

I was hoping it would be better than my Ebersplutter D4 :ambivalence:

Thanks for your helpful post before.
Click to expand...

A guy didna long term test on a chinese heater on their facebook page and it only burnt enough fuel to be 3.3kW even though it was billed as a 5kW and who knows how much of that was output through the exhaust. I’ve noticed that recently people are altering the pump settings to help prevent sooting by slowing the pump frequency. Im sure this must furthet reduce output so what they are actually getting compared to what they claim is a bit unknown. I think as most users are using them in pretty small areas they dont usually need much more than 2kW so they get away with it. I’ve seen a 4kW branded heater heating successfully a 68 ft steel barge for liveaboard permanently I doubt the chinese ones would come anywhere near that.
 
owen-cox said:
A guy didna long term test on a chinese heater on their facebook page and it only burnt enough fuel to be 3.3kW even though it was billed as a 5kW and who knows how much of that was output through the exhaust. I’ve noticed that recently people are altering the pump settings to help prevent sooting by slowing the pump frequency. Im sure this must furthet reduce output so what they are actually getting compared to what they claim is a bit unknown. I think as most users are using them in pretty small areas they dont usually need much more than 2kW so they get away with it. I’ve seen a 4kW branded heater heating successfully a 68 ft steel barge for liveaboard permanently I doubt the chinese ones would come anywhere near that.
Click to expand...

That's interesting, I've not seen that review.

To be honest I probably only needed a 2kw heater but this one although maybe not 5kw should be enough, thanks for the info.

They do a 8kw version too but it looks to be the same unit I think, though early days I am well impressed with it.:encouragement:
 
Last edited:
TOKOLOSHI said:
We fitted a whole set of heavy electric boxes to the hull of a steel boat with Sika, worked a treat!:encouragement::encouragement::encouragement:
Click to expand...

Yes it's good stuff but not cheap, we use to bond in car windscreens in our body shop with it.

It gets everywhere lol

I will smudge some on the plate thanks, good thinking.:):encouragement:
 
Last edited:
owen-cox said:
A guy didna long term test on a chinese heater on their facebook page and it only burnt enough fuel to be 3.3kW even though it was billed as a 5kW and who knows how much of that was output through the exhaust. I’ve noticed that recently people are altering the pump settings to help prevent sooting by slowing the pump frequency. Im sure this must furthet reduce output so what they are actually getting compared to what they claim is a bit unknown. I think as most users are using them in pretty small areas they dont usually need much more than 2kW so they get away with it. I’ve seen a 4kW branded heater heating successfully a 68 ft steel barge for liveaboard permanently I doubt the chinese ones would come anywhere near that.
Click to expand...
Given your situation as seller of a rival brand, and someone with an excellent opportunity to perhaps market these heaters, after all your Planars were receiving similar disparaging comments on here ~ two years ago, I do think your comments are at the very least disingenuous. Indeed the available data on these heaters is sparse, but they are damn near replicas of the Eberspacher D4 (4 kW), and Ebers are not immune to coking up.

So rather than bland inferences these are somehow half baked and thus inferior, a more scientific study would really help those considering using them, this means accurate measurements of air flows, temperature changes and fuel consumptions, and with comparisons to your own Planars and Ebers would have real value, rather than unsupported criticisms and innuendos. One assumes Planars also blow some heat through the exhaust.

This suggestion is not so dissimilar to explanation and feedback warts and all I am providing of a ground up install on a China-eber on the Mobo Forum. I am not equipped to measure the specific performance, and will not berate the heater without at least some evidence they are not what they are purported to be, but I will advise the observed result if it achieves 22oC throughout my 32' large interior powerboat boat in say 5oC external ambient - OR NOT !
 
£135 quid

Bench test, Fuse it, fit isolator, fit right.

Life is a risk, eberspacher/webasto they are too temperamental (in my experience)

I don't look at figures myself, if it works it works.

About time too, silly money for eber/webasto parts.:nonchalance:

Ps : I think Owen was quite honest in stating that the Chinese Diesel Heaters rated at 5000watts was maybe a bit ambitious and maybe not accurate.

I appreciate his honestly as a maybe seller. (Can't be bad):)
 
Last edited:
owen-cox said:
A guy didna long term test on a chinese heater on their facebook page and it only burnt enough fuel to be 3.3kW even though it was billed as a 5kW and who knows how much of that was output through the exhaust. I’ve noticed that recently people are altering the pump settings to help prevent sooting by slowing the pump frequency. Im sure this must furthet reduce output so what they are actually getting compared to what they claim is a bit unknown. I think as most users are using them in pretty small areas they dont usually need much more than 2kW so they get away with it. I’ve seen a 4kW branded heater heating successfully a 68 ft steel barge for liveaboard permanently I doubt the chinese ones would come anywhere near that.
Click to expand...

I buy sell and repair heaters as a retirement hobby. I have tried and tested several 'Chinese heaters' and have not had any problems with any of them. I wont sell them as I cannot get them with a reliable spares back up. I recall testing a 5kw model and recording the inside and outside temps as part of the test. It was certainly had the output ( at least) of a D4. I also tested a 3kw model and it definitely had better output than a D2.
 
pcatterall said:
I buy sell and repair heaters as a retirement hobby. I have tried and tested several 'Chinese heaters' and have not had any problems with any of them. I wont sell them as I cannot get them with a reliable spares back up. I recall testing a 5kw model and recording the inside and outside temps as part of the test. It was certainly had the output ( at least) of a D4. I also tested a 3kw model and it definitely had better output than a D2.
Click to expand...

Nice Hobby:)

Thanks for the info.
 
I've been watching YouTube and reading comments regarding the installation of these units, they can be a killer!

Right ok I will try to explain, the exhaust outlet 24mm is on the 75mm air hose side and their is an air inlet right next to the exhaust pipe this with a 2" gap.

A poster on YouTube noted that his alloy air inlet was melted by the exhaust and it could of thrown huge amounts of monoxide into cabins.

I have fitted exhaust wrap to both inlet and exhaust pipe.

Monoxide alarms a must.
 
Last edited:
Offgridone said:
I've been watching YouTube and reading comments regarding the installation of these units, they can be a killer!

Right ok I will try to explain, the exhaust outlet 24mm is on the 75mm air hose side and their is an air inlet right next to the exhaust pipe this with a 2" gap.

A poster on YouTube noted that his alloy air inlet was melted by the exhaust and it could of thrown huge amounts of monoxide into cabins.

I have fitted exhaust wrap to both inlet and exhaust pipe.

Monoxide alarms a must.
Click to expand...

Are you saying that the combustion air intake is 2" away from the exhaust outlet?
This is the case with all the Eberspacher and webasto heaters. Don't forget this is air for combustion not circulation into the cabin, not that using exhausted air would be good for combustion !!

CO alarms a must anyway!!
 
Offgridone said:
A poster on YouTube noted that his alloy air inlet was melted by the exhaust and it could of thrown huge amounts of monoxide into cabins.
Click to expand...

It wouldn't have got into the cabins, the heater has two totally separate air circulation routes - one for combustion, one for heating.
 
pcatterall said:
Are you saying that the combustion air intake is 2" away from the exhaust outlet?
This is the case with all the Eberspacher and webasto heaters. Don't forget this is air for combustion not circulation into the cabin, not that using exhausted air would be good for combustion !!

CO alarms a must anyway!!
Click to expand...

You just educated me, as a newer to these units, I've not stripped an eberspacher, yes their us a drop down air intake besides the front inlet and this was the pipe i was on about.

Any advice is appreciated.

I have doubts about installing these in a living space inside.

Yes 2 inch away from the exhaust outlet, main fan blowing over far end.

A leaky exhaust will suck and blow emissions into the cabin, don't get me wrong I think they are a brill piece of kit but with faults especially the fuel intake pipe right next to the exhaust.

I've noticed they have altered this now with new units with clip of lids.
 
Last edited:
Offgridone said:
You just educated me, as a newer to these units, I've not stripped an eberspacher, yes their us a drop down air intake besides the front inlet and this was the pipe i was on about.

Any advice is appreciated.

I have doubts about installing these in a living space inside.

Yes 2 inch away from the exhaust outlet, main fan blowing over far end.

A leaky exhaust will suck and blow emissions into the cabin, don't get me wrong I think they are a brill piece of kit but with faults especially the fuel intake pipe right next to the exhaust.

I've noticed they have altered this now with new units with clip of lids.
Click to expand...

Exactly the same as Ebarspacher, Webasto and Planar heaters then.

If some moron has fitted one without insulating the exhaust it's no surprise something melted. But, even if the combustion air intake was missing, it still would not draw exhaust gases into the cabin. If the exhaust was leaking it would draw air into the cabin, but not through the intake that is 2" away, it would draw them in via the heater air intake.

Co alarms an absolute must.
 
pvb said:
It wouldn't have got into the cabins, the heater has two totally separate air circulation routes - one for combustion, one for heating.
Click to expand...

I stand corrected thanks.

I just worry about monoxide, bloody landrover softtop with a knackered exhaust gasket. Lol

Thanks.
 
PaulRainbow said:
Exactly the same as Ebarspacher, Webasto and Planar heaters then.

If some moron has fitted one without insulating the exhaust it's no surprise something melted. But, even if the combustion air intake was missing, it still would not draw exhaust gases into the cabin. If the exhaust was leaking it would draw air into the cabin, but not through the intake that is 2" away, it would draw them in via the heater air intake.

Co alarms an absolute must.
Click to expand...

No what they did was cross the exhaust with the 1 inch combustion intake pipe, I now understand how the units work my mistake, though the fuel pipe inlet is ridiculous.

As my install is on a boat I think piping a rocker cover breather might be a good thing, engine rooms stink.

Just looking at best ways to be safe that's all.
 
The dodgiest thing IMHO is that the fuel intake is very close to the exhaust, and the supplied fuel pipe is plastic. It's not hard to imagine this pipe coming into contact with the exhaust and melting- but a proper installation would have the exhaust lagged anyway. Ideally I would like to use metal fuel pipe close to the heater to further reduce the risk.
 
You must log in or register to reply here.

Share this page

Top