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Old 18 May 2010
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Eberspacher vs WEBASTO


Looking for a heater for my roof tent that sits on top of a desert wolf trailer.

There seems to be 2 leaders in the field of diesel heaters, could anyone give any recommendations on which one is better and any particular model to have or stay clear of.

Thanks in Advance

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Old 20 May 2010
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I've got two 25 year old Eberspacher heaters - never missed a beat, only get used in Winter, so sit idle for about 10 months each year but still fire up at the click of the button. Even the clock timers work - digital now of course.

My only dealings with a Webasto was on a friends Winnebago van and she had a few issues with it that turned out to be incorrect fitment of air ducts by the 'Bago builder. After that it has served her well - maybe 10 years without a hitch.
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Old 22 May 2010
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Hi beware of ebay ex car heaters

quick word of cuation beware of ebay heaters make sure there are not from a car, I got stung, brand new heater but then had to buy a load of extras to make work.

A complete eberspacer unit is alot of money, but now I wish i had gritted my teeth and spent the cash on a complete kit. However saying that you can save pounds buy buying regular hose rather then the erberspacher gear that costs a fortune!

all the best Mark
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Old 1 Jun 2010
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I have a webasto. A few months ago I met a friend of a friend who sells and sevices both and she said they were better than eberspacher. I know people with both and no one has had hassles really. I cant see there being a lot in it. she did say dont run them on low all the time as they clog up, give them a good blast on full heat for a while to burn off any deposits.

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Old 2 Jun 2010
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Hi all
Heard they a;; have problems at altitude but it can be overcome by adding another pump! not sure what is ment by this can anybody explain!

p.s Any new pics of the van Gray?
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Old 24 Jul 2010
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i am using a somewhat dated eberspacher D1LC.
Now in Ecuador we are finding that the unit is reluctant to work above 2200metres.
As here in the Andes we are often at 3000 + metres this is now an issue.

Not sure of specs for webasto.

Also, interestingly, I am currently travelling with a fellow in a landrover who has fitted an eberspacher Hydromatic 4, not as old as mine.
His unit works well (pre heating the engine and cab) up to 3500metres !!!

I am assuming as his unit is much newer and also installed in Switzerland perhaps he has some addtional 'flow' options that improve it???

Eberspacher says for my unit :

"Heating operation at high altitudes:
up to 1500 m: Unrestricted heating operation.
above 1500 m: Heating operation is possible during a short stay ie.g. crossing a mountain pass, taking a rest), If a longer stay is planned (e.g. winter camping), the fuel has to be adapted to the altitude. In this case, please consult the heater manufacturer for advice."

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Old 5 Aug 2010
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The issue with altitude is that the fuel metering on the furnace is very basic. The amount of fuel delivered is dependant on the fuel pump and so a fuel pump which works in the highly oxygenated lowland air, delivers too much fuel above 2000m or so where the air is thinner. Eberspacher manufactures a high altitude dosing pump which should replace the regular pump if you plan on remaining at high altitude for extended periods. Provided the pump is accessible it is very easy job.

I have an eberspacher D2 air heater which works excellently. I now have a webasto water heater which I intend to fit in the coming months to add water heating and redundancy to the heating.
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