Dehumidifiers - advice please

Discussion in 'The Beginner' started by MJ65, Oct 8, 2012.

  1. MJ65

    MJ65 Funster Life Member

    Joined:
    Apr 17, 2012
    Messages:
    22
    Likes Received:
    3
    Location:
    Berkshire
    Folks I really would value advice,we have a 2007 Swift Sundance 630G, our first motorhome which we bought earlier this year and while we are struggling to get out in it enough, we love it. Coming up to winter and soon to be out of the dealer warranty I want to do the right thing in storing her, parked in our drive and can be on hook up as needed.

    Firstly is a dehumidifier a good idea? The weather station in the van shows 80% humidity inside after being shut up for the last 2 weeks. Is this an issue? The weather station may of course be useless, I don't know and the external sensor does not work, so will buy a replacement station at some point, jsut to know temperature in/out and humidity.

    For a dehumidifier I am thinking of this product, your thoughts please?

    http://www.energybulbs.co.uk/produc...siccant+Dehumidifier+(DD122FW+MK5)/3073230053

    Not inexpensive but I absolutely want to ensure the van stays in best state as even though it's 5 yrs old it appears externally and internally to be in great condition. Though a Motorhome technitian did tell me this model is prone to damp, which is an obvious concern, hence my desire to minimise the risk.

    Over to the experts for your advice from a newbie...
     
    Last edited: Oct 8, 2012
  2. buyer

    buyer Funster - Life Member Life Member

    Joined:
    Jun 29, 2008
    Messages:
    215
    Likes Received:
    69
    Location:
    leicestershire
    i have often wondered about the pro's and con's of using a dehumidiffier and also would like some advice please,(is your 1997 van really only 5 year old).:thumb:
     
  3. MJ65

    MJ65 Funster Life Member

    Joined:
    Apr 17, 2012
    Messages:
    22
    Likes Received:
    3
    Location:
    Berkshire
    oops, orignal post said built 1997, meant 2007!!

    Having a moment, the van is indeed 5 yrs old not 15!
     
  4. camocam1

    camocam1 Read Only Funster

    Joined:
    Aug 28, 2012
    Messages:
    1,112
    Likes Received:
    784
    Location:
    Elgin,Moray,Scotland
    As its a swift I would ask the question on the swift forum, 85% humidity seems quite high to me but I'm no expert. From what I have read on other forums quite a few put small heaters in the vans over the winter.
    Ron
     
  5. TheBig1

    TheBig1 Funster Life Member

    Joined:
    Nov 27, 2011
    Messages:
    7,206
    Likes Received:
    9,588
    Location:
    Dorset
    dehumidifiers can in some cases be a curse drawing damp air in at the same time as trapping some

    motorhomes are built to breath, with air vents and gaps built into skylights. better to put an oil filled radiator in there on a timer if neccesary. only needs to be on tickover to prevent freezing air on the surfaces.

    a very good tip is to lift all seat cushions up and open a few top locker doors to allow airflow through winter. also dont leave roller blinds pulled down all winter, as the springs fail. oh and clean the toilet thoroughly then leave the slide open, same as with the fridge
     
  6. Johns_Cross_Motorhomes

    Johns_Cross_Motorhomes Trader - Motorhome & Accessory Sales

    Joined:
    Jan 5, 2008
    Messages:
    9,246
    Likes Received:
    5,197
    Location:
    East Sussex 01-580-881288

    Good advice :thumb:

    Peter
     
  7. coldstreamer

    coldstreamer Funster

    Joined:
    Feb 1, 2011
    Messages:
    209
    Likes Received:
    146
    Location:
    Redcar
    coldstreamer

    Hi MJ65,
    iI am a great believer in de -humidifiers having used one in various vans over the last 20 yrs. Some years ago I had the previledge of working in a flooded village with Canadian engineers, they flew in these huge dehumidifiers, sealed all doors and winows of the houses, put in heaters that raised the temp to 8oF for six hours, then turned the dryers on. The water pumped out of a 6 inch hose for 10 hrs, then when you went indoors it was like a desert.
    Living near the coast we are prone to damp winters (and summers) I have tried many methods of using them. But the proof of the pudding was when I ran a dehumidifier all night with a empty van, no cushions no clothes all doors open all vents shut. Next morning just under a pint of water in the container. Next day returned all the cushions etc. next morning just short of 4 pints of water. I run the dehumidifier on a timer for 3 hrs during the night and rarely have more than half a pint a day. I do this from Oct to March and never have a problem. Best Regards Mac
     
  8. pudseykeith

    pudseykeith Read Only Funster

    Joined:
    Nov 5, 2007
    Messages:
    382
    Likes Received:
    105
    Location:
    Leeds West Riding of York
    Dehumidifiers

    Hi . I use a dehumidifier [D] every year with no problems at all. A ' D' will keep the air in your van dry and as it circulates it will draw out dampness out of your furnishings ,so reducing the cause of mildue and fungus growth. It do's not draw damp air from out side the van Any that may enter due to draft ect is dried in the prosess. A good 'D' will allow you to regulate the humidity inside the van. After a period of living in a confind space the furnishings can become damp due to the action of breathing,cooking ext. A 'D' will dry the inside of the van so keeping every thing sweet and dry over the winter period. When you first switch a 'D' on you will be gobsmacked at the amount of water it will recover from inside the van. This will greatly reduce as the van dry's out.
    If you leave a heater runing inside it wil creat damp air from the furnishings.[Warm air hold water vapper, cold air do's not] With a 'D' the inside of the van will feel warmer and more comfortuble. Damp air will always feel cold due to the evaperation afect on the skin. Follow the science.
    All been said, a 'D' works really first class for us over the 8 years we have had the van.
    I hope this is of helps ,, :thumb: Pudseykeith
     
    Last edited: Oct 9, 2012
    • Like Like x 1
  9. Barclaybasher

    Barclaybasher Funster

    Joined:
    Apr 13, 2012
    Messages:
    2,447
    Likes Received:
    7,090
    Location:
    Derby
    I have my van on the drive on hook up with an oil- filled electric heater set to low on the thermostat. I don't 'winterise' the van, just leave a vent open and some lockers open, fridge doors open - even leave some clothes and dry food. I use the van over Winter when I can - just get in and go - in a nicely warmed van, no ice on the windows, no condensation:thumb:



     
    Last edited: Oct 9, 2012
  10. MJ65

    MJ65 Funster Life Member

    Joined:
    Apr 17, 2012
    Messages:
    22
    Likes Received:
    3
    Location:
    Berkshire
    Ummm, thank you all so far for comments

    I'm probably more confused now than previous as there seem to be two schools of thought. I planned to have a small heater for when temps fall below maybe 1 or 2C inside Van but was of the opinion that a dehumidifier, with hose, and set to a suitable level would be good insurance not drying the van to a crisp but stopping it getting too humid/damp. 80% humidity on our inside humidity gauge was a concern, though not sure if 80% is bad.

    thanks for all your comments thus far.

    MJ
     
  11. alfandM

    alfandM Funster

    Joined:
    Mar 12, 2012
    Messages:
    1,009
    Likes Received:
    990
    Location:
    sweden
    Hi, its a very good idea to use a humidity machine,we have used ours for around 9years now in our mh, set at 50% then when spring comes put it on full for one night, we are so pleased with the results that we bought one for our home! great for drying cloths during winter periods, i would recomend a good quality one not one of these chinese cheapos, again its your choice, but i strongly recomend them,cheers Alf:thumb:
     
  12. robinwickens

    robinwickens Read Only Funster

    Joined:
    Oct 3, 2012
    Messages:
    52
    Likes Received:
    20
    Location:
    Bromyard
    When on hook up we always run a small de-humidifier, the noise level is minimum and it is really surprising how much the humidity rises in a confined space when you sleep, shower and cook.
    Also when in storage without hook up we use the gel type de-humidifiers which are really cheap. One in the shower area and one in the kitchen area.
    Come back a month later and you will find out how effective these actually are!
    Hope this helps.
     
    • Like Like x 1
  13. rainbow chasers

    rainbow chasers Read Only Funster

    Joined:
    Oct 30, 2009
    Messages:
    3,747
    Likes Received:
    1,720
    Location:
    Mid Cornwall

    Good advice!

    Large dehumdifiers with dry everything out completely, you really do not want to draw all the moisture out of the wood - it needs it for strength or else it will become brittle.

    A small 'Egg' type will suffice, and as above, the gel type are excellent for that 'middle ground' - they cost a pound each for the large ones and they will last a few months.

    Heat the van by all means, but do it occasionally and GENTLY - don't let it get too warm or you will cause condensation to form - you need an 'ambient' temperature. Something like 16-18 degrees.

    And of course - keep lockers, doors and wardrobes open as any temp change needs to be kept uniform.
     
  14. slobadoberbob

    slobadoberbob Read Only Funster

    Joined:
    Jun 1, 2009
    Messages:
    6,159
    Likes Received:
    1,970
    Location:
    Kent, garden of England
    I do the same


    I do the same and it works for me... I tend to leave it on most of the colder part of the night .. 6 hours.. I have it on the kitchen work top and it drains out.. you can see the water in the morning under the back of the RV.. Got my from Screwfix.. £129.

    Bob
     
  15. Terry

    Terry Funster

    Joined:
    Dec 27, 2007
    Messages:
    10,722
    Likes Received:
    6,224
    Location:
    South yorks
    Hi if you are going to use DEH then block as many vents up as possible or it will simply keep dragging in all the cold wet moisture laden air :Eeek::Doh::BigGrin:
    terry
     
  16. slobadoberbob

    slobadoberbob Read Only Funster

    Joined:
    Jun 1, 2009
    Messages:
    6,159
    Likes Received:
    1,970
    Location:
    Kent, garden of England
    up to recent

    Up to recent we did the same leaving everything on board.. but now it is up for sale we have taken the food and clothes and bedding off... with a couple of tube heaters.. one in the bathroom, one in the main area and a dehumidifier on 6 hours a night in the bad moths.. the RV is always dry .....

    Bob
     
  17. darklord

    darklord Read Only Funster

    Joined:
    Apr 28, 2011
    Messages:
    1,241
    Likes Received:
    1,243
    Location:
    essex
    Jeez, your van is,nt up for sale is it bob:Rofl1::Rofl1:


    EVERYTHING needs a certain amount of moisture in it, the air, fibres, composites, cupboards....drag all the moisture out, and you are altering its composition. dehumidifiers, by their nature, are their own salesmaen...you see one work, and you WANT one..............but you dont NEED one, if you did, you would have a problem.
    To avoid extreme weather affecting your MH, the tube heater on "frost" is as safe as you will get, as well as either using it, or opening it up and sitting in it having a cuppa every now and then, best to keep an eye on it anyway:thumb:
     
  18. knokinonabit

    knokinonabit Funster

    Joined:
    Dec 28, 2011
    Messages:
    2,482
    Likes Received:
    2,454
    Location:
    Stokesley, North Yorks
    Last winter we lifted all of the cushions and seats/bed up so the air could circulate and left the Truma on a low thermostat setting and had no problems. We have the MH at home on hook up and use it as often as we can, so it is always ready for a quick getaway.
    Didn't notice any increase in the leccy bill, other than the normal rip off price hikes.
    We will be doing the same this year as the least bit of good (ish) weather is all the excuse we need.
    We also opened all of the cupboards, even though they still contained our normal supplies.
     
    Last edited: Oct 9, 2012
  19. billy

    billy Read Only Funster

    Joined:
    Jan 10, 2009
    Messages:
    658
    Likes Received:
    314
    Location:
    Bolton
    Thats very true Terry as long as air gets in the DEH will keep running
     
    • Like Like x 1
  20. MJ65

    MJ65 Funster Life Member

    Joined:
    Apr 17, 2012
    Messages:
    22
    Likes Received:
    3
    Location:
    Berkshire
    Humidity Meter probably faulty

    On replacing the humidity meter I now have a reading of 59% inside and 62% RH outside. Are these numbers OK in the opinion of those in the know? This is without any dehumidifier.
     
Loading...

Share This Page