another question...dehumidifiers?

Discussion in 'Motorhome Chat' started by Sue, Oct 9, 2014.

  1. Sue

    Sue Funster

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    Is it best to use one in the motorhome , especially during winter storage? If so , can anyone tell me what they use, or recommend the best way of minimising damp when stored outside. thanks again
     
  2. scotjimland

    scotjimland Funster Life Member

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    In a word.. ventilation.. unless your van has a leak.. not required.. leave the cupboard and overhead locker doors open and the roof light partially open.

    A motorhome would need to be hermetically sealed to make any difference.. any moisture the dehumidifier removes is quickly replaced by moisture in the air from outside.. some people run them and swear they make a difference.. the science says otherwise.

    In winter, generally the ambient moisture is low due to the low air temperature.. so take precautions against freezing by draining down all pipes and tanks and leaving taps open..
     
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  3. Sue

    Sue Funster

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    if the roof light is partially open cant pesky things like rodents get in? its stored on a farm, but my son stored his transit on a registered site and it provided a lovely cosy home for a family of mice over winter.
     
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  4. MikeandCarolyn

    MikeandCarolyn

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    Oh dear,this can of worms again-I suppose it's seasonal.:) Jim is right-but many won't agree-and they never can quote humidity readings,they just say that the water container needs emptying regularly therefore it is doing good. You might as well just run the dehumidifier out in the open air.
     
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  5. scotjimland

    scotjimland Funster Life Member

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    I guess so.. but never heard of mice coming in the roof light.. but doesn't your roof light have a mesh cover ? If not perhaps you could make something...
    In any case, most roof lights have some ventilation even when closed..
     
  6. DBK

    DBK Funster

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    This has been argued over before so you will have to make up your own mind! Most open vents in mhs are in the roof and as dry air is denser than moist air a dehumidifier will reduce the moisture content inside the vehicle. Also, the sheer volume of dry air a typical compressor dehumidifier will push out will overwhelm any which might diffuse in through the vents.

    If you have had a flood in the vehicle I can see the benefit of a dehumidifier but beware the damage they can do to any wood if left too long. If the wood is dried too much it can shrink and warp.

    As suggested, normal ventilation should be fine, don't run a heater and if you can go out an use the MH in the winter!
     
  7. cranky

    cranky Funster

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    That is the best bit of advice:)
     
  8. jonandshell

    jonandshell Funster

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    We give the van a session on a dehumidifier from time to time over the winter months.
    Its a good way of keeping the fabrics fresh as well as identifying if there is any buildup of moisture.
    Water in the container on the dehumidifier indicates water is coming in somewhere! In the last case, it was a separated bonded joint between panel and frame on a garage door. The damp tester missed this because it was well concealed behind some trim.
    A bit of humidity control in the van also stops our bedroom door getting tight in the frame over the winter months!
     
  9. Frentchy

    Frentchy

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  10. Scattycat

    Scattycat Funster

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    If you do decide to use a dehumidifier remeber to put plugs in the sinks and make sure the toilet seal is closed tight.
    Many years ago a friend of mine left an industrial one on in his kitchen when he was away for a few days, when he got back the place stunk, he reckons it was because the machine had taken the water out of the sink bottle trap allowing fumes to come up from the drains
     
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  11. Gorse Hill

    Gorse Hill Funster

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    Hi just wondering why you suggest not to run a heater, I currently have mine on the drive on EHU and leave my heater on
    Any info on this would be helpful, thanks mark
     
  12. sdc77

    sdc77 Funster

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    The vans on the drive and we also leave the heater on low over winter and dont drain down. Luckily we have a manual dump valve.
     
  13. Sue

    Sue Funster

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    sh
    shows how much of a dummy i am.....but whats EHU?
     
  14. scotjimland

    scotjimland Funster Life Member

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    as you predicted..

    Sue..
    EHU = Electrical Hook Up

    the socket where you plug your motorhome 230v mains electrical lead into
     
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  15. Sue

    Sue Funster

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    thanks......abbreviations are obvious when you know!
     
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  16. peter marshall

    peter marshall

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    WE find the best thing to do is go to Spain from Jan to June that usually sorts the storage problems out. Pete
    (y)(y)(y);););):inlove::inlove::inlove:
     
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  17. cruiser

    cruiser Funster Life Member

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    come on then, why no heater on in the van. I have been doing this for quite a few years, after some advise from a motorhome fitter.
     
  18. scotjimland

    scotjimland Funster Life Member

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    lots of people keep their vans heated.. I don't know why .. what is the benefit if drained down and no water to freeze.. ?

    the cost of running the heater.

    if free standing, in the event of a fire your insurance won't pay out
     
  19. tattoobluedog12345

    tattoobluedog12345

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    so if I have read this right I have just bought an electric convector heater to leave on low settings for over the winter would this be a waste of time

    thank you
     
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  20. Chockswahay

    Chockswahay

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    One word comes to mind here..........

    Placebo :rolleyes:
     
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