Getting cold outside ....

Discussion in 'Motorhome Chat' started by Mattyjwr, Nov 23, 2014.

  1. Mattyjwr

    Mattyjwr Funster Life Member

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    We are expecting our first frost this evening, down to around -2. We've drained the water heater and pipes but I haven't drained the loo cistern yet. How cold does it normally need to be outside before it gets down to freezing / cold enough to cause freeze damage inside a mh?
     
  2. BreweryDave

    BreweryDave Funster Life Member

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    0 degrees usually:whistle:
     
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  3. GWAYGWAY

    GWAYGWAY Funster

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    Sarcy, I also would like to know how cold it gets OUTSIDE before it starts to freeze INSIDE, bearing in mind that the van has quite good insulation. I have emptied my boiler, although I could have put the hot water on and it holds the heat for yonks.
     
  4. sdc77

    sdc77 Funster

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    Heaters on low on EHU.. I know that's not the answer.. Its my alternative.
     
  5. daveandsan

    daveandsan Funster

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    I wouldn't think -2 will hurt it tonight but I would drain it down as soon as you can. We had a problem with this when we had our caravan.
     
  6. golly

    golly Funster

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    The only thing I like about the Whale blown air heating is that it has a frost setting, so I have left it on that. I'm lucky that I can have it on hook up on the drive.
     
  7. jonandshell

    jonandshell Funster

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    Insulation does not stop the inside of the van from getting as cold as outside.

    It just slows the effect.

    It is not a question of temperature, but time. If it is 0 degrees outside, your van interior will also become 0 degrees. the only difference insulation makes is the time needed to achieve this temperature balance.

    The ONLY way to prevent your van becoming as cold as the ambient temperature is to heat it.

    That applies to everything from a VW splitty to a Niesman and Bischoff!
     
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  8. BreweryDave

    BreweryDave Funster Life Member

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    I admit - it was sarcy - sorry:p ....couldn't resist!

    The question you ask is more complicated than you think, and various laws of thermodynamics and heat retention come in to play - and Brian Cox I aint!

    That said - I would guestimate that if the ambient temperature stayed at 0 for any length of time - that would - over time - reduce the interior temp to the same. its the rate at which it drops inside which is the variable, dependant on other factors such as wind chill and how well insulated the van is. I would endeavour to keep it on EHU on the drive where possible and leave a low wattage oil rad or similar on inside, if for no other reason than to keep everything from freezing - not just water in pipes, but moisture in the air and furnishings etc.


    .....blimey - almost a sensible answer - moi:eek:
     
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  9. Dawn B

    Dawn B Funster

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    quit while you're ahead
     
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  10. Lisa

    Lisa Funster

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    No drinking today then?
     
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  11. Lisa

    Lisa Funster

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    Bloody typical.....Dawn gets in first! :D:D
     
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  12. Mousy

    Mousy Funster Life Member

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    Thanks so much for this post. Just sent Martin out to drain it all down etc and put the heater on frost setting.

    We didn't have one night of frost last year, but I can feel a harsh winter coming, I can feel it in my bones!

    Also don't forget Funsters to unscrew that dome filter thing on the boiler (no doubt somebody will come along in a mo and give it the correct name!)
     
  13. DuxDeluxe

    DuxDeluxe Funster Life Member

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    Not worried about things freezing in the van, but put the heating and systems on today as van hasn't been used for a couple of weeks. Must put some water in sometime....

    And supplies.....
     
  14. BreweryDave

    BreweryDave Funster Life Member

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    ......working till 10:cry:
     
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  15. Lisa

    Lisa Funster

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    No rest for the wicked ;).....should you be on here?! :p
     
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  16. sdc77

    sdc77 Funster

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    ... Checks... :cautious:
     
  17. Mattyjwr

    Mattyjwr Funster Life Member

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    Thanks for the informative reply ;)


    Adding to this, as water expands by up to 9% as it freezes, I'm working on the basis that it does not have to be 0c before expansion causes damage and guess that any ice could further restrict water expansion, increasing the likelihood of damage.
     
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  18. BreweryDave

    BreweryDave Funster Life Member

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    Sod all else to do - solved the worlds problems, just waiting to go home(y)
     
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  19. Debs

    Debs Funster Life Member

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    So what's this please? Eek bit worried now - on the caravan we had drain taps we used to open every time but not on this version of the truma combi.
    The dealer told us there's an auto dump? But should we be doing something else??
     
  20. Ralph-n-Bev

    Ralph-n-Bev Funster

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    This is so true. Ours is fully winterised. We have no problems camping out -17 the lowest so far. Never once been cold in the van . Especially with Webasto heating.
    BUT we left it in storage a couple of weeks when we had really cold weather. When we went to get her for a trip , a can of coke had exploded in the fridge. It was in the salad box too. It went with such force it made a hole in it!
    We always keep the Fridge door open. Also a can had nearly exploded. By that , I mean the bottom had become bowed out instead of in !
    It was -10 outside AND -10 inside.:Eeek:
     
    Last edited: Nov 23, 2014
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