van insurance

This is an advertisement
Interested In Advertising? | Contact Us Here

Warning!

 

Welcome to Clean It Up; the UK`s largest cleaning forum with over 34,000 members

 

Please login or register to post and reply to topics.      

 

Forgot your password? Click here

tlwcs

  • Posts: 2157
Sonburg 5.1 heater. Is it hot enough?
« on: May 09, 2025, 12:07:56 pm »
Following on from the YouTube video, I said I’d ordered one and it arrived last Friday.
Before it goes to the mechanic to be installed and the exhaust routed I wanted to be sure it worked and there aren’t any leaks.
After the standard ptfe tape faff and lovely hose ‘leaking’ lock connectors, that I will change, it ran for an hour giving me these results. A little smoke at first, which I put down to it being new.
Happy with the results though.
I bought the unit after Dave’s review and I did email him with a couple of questions last week that he hasn’t replied to. Make of that what you will.
(Can’t delete the duplicated pic)
For now all good

ants

  • Posts: 341
Re: Sonburg 5.1 heater. Is it hot enough?
« Reply #1 on: May 09, 2025, 02:02:03 pm »
What are the dimensions of it please. I cant find them on their website or on Ebay

tlwcs

  • Posts: 2157
Re: Sonburg 5.1 heater. Is it hot enough?
« Reply #2 on: May 09, 2025, 03:17:56 pm »
What are the dimensions of it please. I cant find them on their website or on Ebay

20cm deep
40cm wide
60cm high

ants

  • Posts: 341
Re: Sonburg 5.1 heater. Is it hot enough?
« Reply #3 on: May 09, 2025, 06:20:37 pm »
Sounds good,it might squeeze in
Thanks for taking the time to measure it ;)

Stoots

  • Posts: 6340
Re: Sonburg 5.1 heater. Is it hot enough?
« Reply #4 on: May 11, 2025, 06:35:49 am »
wouldnt the temp be lower once the hose is all laid out on the floor ?

i must admit that price is a lot more tempting for hot water and ive never really considered it before...

From what ive read 5kw isnt enough dont most advocate using a 9kw boiler ?

what would be the fuel cost to run this boiler on a daily basis ?


tlwcs

  • Posts: 2157
Re: Sonburg 5.1 heater. Is it hot enough?
« Reply #5 on: May 11, 2025, 07:57:48 am »
wouldnt the temp be lower once the hose is all laid out on the floor ?

i must admit that price is a lot more tempting for hot water and ive never really considered it before...

From what ive read 5kw isnt enough dont most advocate using a 9kw boiler ?

what would be the fuel cost to run this boiler on a daily basis ?

Morning Adam.
Maybe you’re right with the coiled hose, it was also recirculating 50 litres of water I had left in the tank.
It will be fitted by the mechanic I use  who is on holiday.

I wanted to test it worked without any leaks before it’s bolted down.
It’s replacing the immersion element I currently use.
 
Running costs are obviously unknown atm but I can update when in use.
9 kw might be more efficient and get the water hotter and I value Spruce’s input on the other thread but if it only reaches 30* on a winters day, I will be happy with that.

I emailed Dave directly to ask if and how it needs to be recirculated and also where he got the temp gauge from, but he hasn’t replied and I doubt if he will now.
Tony

Spruce

  • Posts: 8609
Re: Sonburg 5.1 heater. Is it hot enough?
« Reply #6 on: May 11, 2025, 12:08:15 pm »
wouldnt the temp be lower once the hose is all laid out on the floor ?

i must admit that price is a lot more tempting for hot water and ive never really considered it before...

From what ive read 5kw isnt enough dont most advocate using a 9kw boiler ?

what would be the fuel cost to run this boiler on a daily basis ?

Yes it does in our experience, especially when the ground is frozen. The more hose is pulled out the cooler the water at the end.

It will be interesting to hear about running costs. My 9kw boiler is plumbed into the diesel tank. We just use the heater mainly over winter and for the odd job in summer.  My Peugeot Boxer does around 24mpg during the summer when the heater isn't working, but it drops to around 12mpg during the winter.

Personally I can't see using one of those 10 litre auxillary fuel tanks will last very long. If anything I would try to modify a 30 litre outboard motor fuel tank, but the problem would be that it will take up valuable floor space and the back of the van could stink of any spilt diesel.
Success is 1% inspiration, 98% perspiration and 2% attention to detail!

The older I get, the better I was ;)

Splash and dash

  • Posts: 336
Re: Sonburg 5.1 heater. Is it hot enough?
« Reply #7 on: May 11, 2025, 07:33:32 pm »
It’s difficult to be exact with fuel usage we have 9 kw boilers in the vans and they are plumbed into the fuel tanks ,the book says they use 0.9 ltr per hour I am sure it’s more like 1.25 ltr per hour .

zesty

  • Posts: 2597
Re: Sonburg 5.1 heater. Is it hot enough?
« Reply #8 on: May 11, 2025, 08:11:34 pm »
It’s difficult to be exact with fuel usage we have 9 kw boilers in the vans and they are plumbed into the fuel tanks ,the book says they use 0.9 ltr per hour I am sure it’s more like 1.25 ltr per hour .

That’s a lot of diesel. Crikey.

Scottish Cleaning Service

  • Posts: 698
Re: Sonburg 5.1 heater. Is it hot enough?
« Reply #9 on: May 11, 2025, 08:38:39 pm »
I usually run my heater for two hours and then turn it off. As I can only use one reel at a time, this means the other reel is moving pure back to tank. After a few hours the tank is hot enough for me to turn the heater off. You can insulate the tank so the heat stays in and means the next day it heats up fairly quickly.

Stoots

  • Posts: 6340
Re: Sonburg 5.1 heater. Is it hot enough?
« Reply #10 on: May 12, 2025, 04:24:58 pm »
I read a 5kw boiler uses about 0.6ltr per hour so roughly £5 a day for a 6 hour day

Thats not bad to be fair

the king

  • Posts: 1459
Re: Sonburg 5.1 heater. Is it hot enough?
« Reply #11 on: May 12, 2025, 08:12:48 pm »
my 9kw uses about £25 a week in fuel ish but water gets piping hot on the hot setting for my round the 5kw just wont be hot enough shame as there price is very good

Stoots

  • Posts: 6340
Re: Sonburg 5.1 heater. Is it hot enough?
« Reply #12 on: May 13, 2025, 08:26:08 am »
That's the thing if its only luke warm its false economy.

I'll pass

dazmond

  • Posts: 24369
Re: Sonburg 5.1 heater. Is it hot enough?
« Reply #13 on: May 13, 2025, 09:56:31 am »
It'll be a very luke warm system in winter and just warm at best on a warm day in summer with all your hose out.....
price higher/work harder!

zesty

  • Posts: 2597
Re: Sonburg 5.1 heater. Is it hot enough?
« Reply #14 on: May 13, 2025, 11:15:25 am »
That's the thing if its only like warm its false economy.

I'll pass

Seems like a lot of faff for Luke warm water.

I’m defo not interested  ;D

Scottish Cleaning Service

  • Posts: 698
Re: Sonburg 5.1 heater. Is it hot enough?
« Reply #15 on: May 13, 2025, 02:34:15 pm »
That's probably the reason Webasto are discontinuing their 5Kw heater, not hot enough. I was well warned before I bought mine to buy the 9kw heater and I'm glad I did. Diesel is as cheap as chips now, I'm paying £1.30 a litre now and I think it may fall further until the Gov puts the 5p a litre back on.

Stoots

  • Posts: 6340
Re: Sonburg 5.1 heater. Is it hot enough?
« Reply #16 on: May 13, 2025, 05:03:17 pm »
Surely someone can up with a heater for a reasonable price (sub 2k imo) that gets the water hot.

How hard can it be my house boiler cost not much more than this 5kw effort.

Scottish Cleaning Service

  • Posts: 698
Re: Sonburg 5.1 heater. Is it hot enough?
« Reply #17 on: May 13, 2025, 06:41:52 pm »
Surely someone can up with a heater for a reasonable price (sub 2k imo) that gets the water hot.

How hard can it be my house boiler cost not much more than this 5kw effort.

You can rig up a gas shower burner by using a propane cylinder but its not legal. These Webasto heaters are bomb proof and fully legal thus the cost. Once one has a load of good customers then the running costs are minimal. Everything in this game is about building up the business one day at a time. After 5 years the money begins to come in and the costs go down the way like a see-saw. That's what I'm witnessing, one can pick and choose jobs. Hold on to good customers and get rid of the bad ones, take full control and don't be afraid to say sorry no can do, too busy.


dazmond

  • Posts: 24369
Re: Sonburg 5.1 heater. Is it hot enough?
« Reply #19 on: May 15, 2025, 11:23:03 am »
https://pbautoelectrics.co.uk/shop/webasto-thermo-pro-90-diesel-12v-water-heater-with-universal-fitting-kit-9023075a9024620a/?srsltid=AfmBOorqRPsDEmC0inxqzKZq47OsiTfp8OXxt-V1osEoYbh0TnkfSd_Z

Could you not just buy that and fit it yourself?.

No because you need a cabinet,pump controller, pump,heat exchanger,header tank,battery bank and charging system and integration into your vans fuel tank(through the sender unit on the top of the tank) which usually means dropping the tank. Drilling holes in van floor for air inlet and exhaust hoses, etc....

Unless you used to be a mechanic or mechanical minded you haven't a chance in hell to install it to a good,safe standard.
price higher/work harder!