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Inguz



Member Since: 06 Sep 2020
Location: In the wild
Posts: 101

Webasto choice help
I'm planning on spending some time in extremely cold climates and wondering what is the best webasto setup for the job.

Right now I sleep in the back with sleeping bags but it won't work in minus 30. I was thinking of running two webastos, a thermo top c and an airtop. I will also be installing a pop roof, but could probably pipe the air up if necessary.

Would love some input if anyone has any.

Thanks
Post #1019834 2nd Jan 2024 1:14pm
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Steve_overland



Member Since: 14 Oct 2018
Location: Gaydon
Posts: 290

United Kingdom 1997 Defender 110 300 Tdi HT Chawton White
Watching with interest … @steve_overland on Insta.
110 expedition vehicle with pop roof
Post #1019854 2nd Jan 2024 3:38pm
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jst



Member Since: 14 Jan 2008
Location: Taunton
Posts: 8043

 2011 Defender 110 Puma 2.4 USW Stornoway Grey
I have both in my 110 and my 130.

110, thermo top c and airtop 2000.

130 later engine heater, can't remember model but it has seperate water pump for easier installation. An air top off a narrow boat 4500kw from memory. 130 being bigger internal space.( edited to add: Sorry 4.5kw as highlighted in an interesting way below)

All have their own dedicated pickup into the tank through the fuel pump/sender housing. Both tdcis

Both vehicles run heaters off 2nd battery.

Lots of pics.on install on my '130 itch' post on here. Cheers

James
110 2012 XS Utility
130 2011 M57 bespoke Camper
90 2010 Hardtop
90 M57 1988 Hardtop


Last edited by jst on 2nd Jan 2024 9:51pm. Edited 1 time in total
Post #1019896 2nd Jan 2024 7:53pm
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v8bob



Member Since: 14 Mar 2018
Location: Midlands
Posts: 318

United Kingdom 1998 Defender 90 300 Tdi HT Nato Green
I am a little baffled by the need for so much heating capacity in a small area.
Surely one heater, at around 4-5kw, and possibly a similar size backup or spare would be more than sufficient?
Don’t you need concentrate on insulation and possibly heat recovery from any ventilation system?
Post #1019901 2nd Jan 2024 9:11pm
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jst



Member Since: 14 Jan 2008
Location: Taunton
Posts: 8043

 2011 Defender 110 Puma 2.4 USW Stornoway Grey
Very astute of you on my typo. Cheers

James
110 2012 XS Utility
130 2011 M57 bespoke Camper
90 2010 Hardtop
90 M57 1988 Hardtop
Post #1019904 2nd Jan 2024 9:50pm
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NickMc



Member Since: 01 Oct 2014
Location: Norn Iron
Posts: 1627

Northern Ireland 2006 Defender 90 Td5 HT Bonatti Grey
Has anyone tried the Chinese versions? You could buy a fair few before you even get near to the price.
Post #1019914 2nd Jan 2024 10:57pm
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Ianb



Member Since: 25 Oct 2023
Location: Devon
Posts: 402

United Kingdom 1998 Defender 110 300 Tdi HT Alaska White
Watching with interest - specifically thermo top c.

I second the need for insulation. We spent a couple nights in ours prior to any insulation but with a diesel heater, the condensation was a massive issue and the heat dissipation was huge. We've since spent a lot of hours insulating, carpeting and currently rebuilding cabinets/bed etc. Basically it's a very small space, so heating it doesn't take too long, but heat retention is the biggest challenge (we believe anyway)..


@v8bob

The thermo top c would be an engine preheater (or at least what I am looking for) - designed to stop the engine becoming frozen - From what I gather, you run it for a couple hours prior to starting up and it is supposed to bring the engine up to an ambient temp which makes starting easier and in some cases makes it possible! The Yeti - 110 Camper https://www.defender2.net/forum/topic90308.html
Youtube - https://www.youtube.com/@YetitheDefender
Instagram - https://www.instagram.com/yetithedefender/
Post #1019915 2nd Jan 2024 11:19pm
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Inguz



Member Since: 06 Sep 2020
Location: In the wild
Posts: 101

NickMc wrote:
Has anyone tried the Chinese versions? You could buy a fair few before you even get near to the price.


I've thought of looking into the Chinese ones, but the prices for a used Webasto are so cheap I didn't see the point. Webasto are also well built
Post #1019923 3rd Jan 2024 5:14am
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Inguz



Member Since: 06 Sep 2020
Location: In the wild
Posts: 101

jst wrote:
I have both in my 110 and my 130.

110, thermo top c and airtop 2000.

130 later engine heater, can't remember model but it has seperate water pump for easier installation. An air top off a narrow boat 4500kw from memory. 130 being bigger internal space.( edited to add: Sorry 4.5kw as highlighted in an interesting way below)

All have their own dedicated pickup into the tank through the fuel pump/sender housing. Both tdcis

Both vehicles run heaters off 2nd battery.

Lots of pics.on install on my '130 itch' post on here.


This is exactly what I want to do. Also had the same idea of using the webasto an heat exchanger for showers. Which heat exchanger do you have? I've been looking at the Glind ones.
Post #1019925 3rd Jan 2024 5:43am
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Steve_overland



Member Since: 14 Oct 2018
Location: Gaydon
Posts: 290

United Kingdom 1997 Defender 110 300 Tdi HT Chawton White
I have a Glind ready to go… does anyone have a plumbing diagram of how they fitted this into a coolant system with a pre heater…. @steve_overland on Insta.
110 expedition vehicle with pop roof
Post #1019944 3rd Jan 2024 9:50am
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mata



Member Since: 24 Jan 2014
Location: Manchester
Posts: 153

United Kingdom 2009 Defender 110 Puma 2.4 USW Stornoway Grey
Im getting the bits together to put a thermotop c in my 110. I had a fair bit of experience with this model as it was oem fitted in my old 5 series bmw, theyre cheap second hand and easy to work on. I got one from an e53 x5 bmw and was planning on fitting an aftermarket PCB controller however only after it iarrived i realised it didnt come with a water pump as theyre a seperate item on the e53. Looking for a pump, bracket cable and bits i decided to just buy another thermotop c but from a freelander as it was the same price so i now have a spare glowplug and body, plus the freelnder pcb will probably do what the aftermarket one i was going to fit will do - primerialy fire the heater on a switced 12v rather than needing k-line/w-bus.
Post #1019993 3rd Jan 2024 6:20pm
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jst



Member Since: 14 Jan 2008
Location: Taunton
Posts: 8043

 2011 Defender 110 Puma 2.4 USW Stornoway Grey
Inguz wrote:
jst wrote:
I have both in my 110 and my 130.

110, thermo top c and airtop 2000.

130 later engine heater, can't remember model but it has seperate water pump for easier installation. An air top off a narrow boat 4500kw from memory. 130 being bigger internal space.( edited to add: Sorry 4.5kw as highlighted in an interesting way below)

All have their own dedicated pickup into the tank through the fuel pump/sender housing. Both tdcis

Both vehicles run heaters off 2nd battery.

Lots of pics.on install on my '130 itch' post on here.


This is exactly what I want to do. Also had the same idea of using the webasto an heat exchanger for showers. Which heat exchanger do you have? I've been looking at the Glind ones.


A generic off the shelf ebay heat exchanger. Can't recall.size now, may be I that thread.

Mine is webasto out to beat exchanger to engine to heater to webasto Cheers

James
110 2012 XS Utility
130 2011 M57 bespoke Camper
90 2010 Hardtop
90 M57 1988 Hardtop
Post #1020108 4th Jan 2024 2:54pm
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sako243



Member Since: 08 Jul 2014
Location: Wales
Posts: 1219

Wales 1994 Defender 110 300 Tdi CSW Alpine White
Put a "12kW" one in the 110 and suffice to say it's almost way too powerful but then I was factoring in Chinese kW. Seems to be very well built and for £69 can't really complain.

Only use it for preheating the 110 when it's been frozen. Kept a separate diesel tank because the 110 will hopefully be going petrol in the near future.

A friend of mine had a really smart idea which was a catch can on the return line to the fuel tank. Fuel in at the top, overflow to tank at the top and Webasto feed from the bottom. Three litres and is enough to run it for 48h. Run out and simply fire up the vehicle and the catch can quickly refills. Didn't need to faff with installing secondary pickups into the tank. Ed
82 Hotspur Sandringham 6x6
95 Defender 110 300Tdi
Post #1020135 4th Jan 2024 7:08pm
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Steve_overland



Member Since: 14 Oct 2018
Location: Gaydon
Posts: 290

United Kingdom 1997 Defender 110 300 Tdi HT Chawton White
One thing I would highly recommend is a carbon monoxide alarm if camping in the vehicle just in case the heater exhaust is not able to escape for any reason your alarm wakes you before it’s to late ….. deep snow for example … @steve_overland on Insta.
110 expedition vehicle with pop roof
Post #1020248 5th Jan 2024 8:23pm
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custom90



Member Since: 21 Jan 2010
Location: South West, England.
Posts: 20413

United Kingdom 
Very much agree with the above, it’s been known for people to expire due to having a tent BBQ (bringing it inside after use or indoor use) as well for the very same reason with Carbon Monoxide. $W33T $0U7H3RN $UG4R
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Post #1020336 6th Jan 2024 8:39pm
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