Dehumidification

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This topic contains 13 replies, has 5 voices, and was last updated by Profile photo of Margo Schabel Margo Schabel 5 months, 1 week ago.

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  • #6241
    Profile photo of Norma
    Norma
    Participant
    • Texas
    Cheers: 5 921

    It’s been raining off and on here for a week!  We NEVER get that much…hahahaha.

    So tell me, how do YOU fight the humidity in your rig?

     

     

    1996 Honorbuilt Eldorado C320 "Lurch" | Chewbacca is my co-pilot

    #6242
    Profile photo of Ray
    Ray
    Keymaster
    • Vancouver Island
    Cheers: 7 249

    We have vent covers on all our roof vents so we can leave them wide open all the time even when raining. This allows the moist air a way to leave the rig. Also running ventilation fans can help especially after a shower.

    LoveYourRV.com
    #6244
    Profile photo of Norma
    Norma
    Participant
    • Texas
    Cheers: 5 921

    Little Acurite gauge says 68%-High.  That’s with the only vent fan running, both vents open and the AC on all day. waaaaaaaah!

    Need to replace the unit in the bathroom, but the Fantastic is only a few feet away.

    It’s supposed to keep raining tomorrow, then we hit some dry weather!!!

    1996 Honorbuilt Eldorado C320 "Lurch" | Chewbacca is my co-pilot

    #6245
    Profile photo of Roger & Sue Fell
    Roger & Sue Fell
    Participant
    • Edmonton, Alberta
    Cheers: 2 305

    I tried the Eva dry  dehumidifier, quite disappointing. The moisture was coming up through my garage floor to the point the cement looked wet, after two days with the ceiling fans on, there was about a pint of water in the reservoir. Don’t waste your money.

    #6246
    Profile photo of Norma
    Norma
    Participant
    • Texas
    Cheers: 5 921

    Dang!  I was looking at that too…  I’m guessing the old timey compressor-based dehumidifiers are going to be the best bet.  They just take up so much dang room!  RV parts makers need to build us one for the roof.  The AC will help, but it’s too cold to run it.  I’m gonna turn on my little electric space heater and run a fan past it, turn on the vent fan and see what’s what.

    Humidity this morning is 75%…it’s pouring right now…outside, that is…lol

    1996 Honorbuilt Eldorado C320 "Lurch" | Chewbacca is my co-pilot

    #6255
    Profile photo of Roger & Sue Fell
    Roger & Sue Fell
    Participant
    • Edmonton, Alberta
    Cheers: 2 305

    We have a similar problem, as our trailer is within 100 yards of the lake. The trees kill the wind, and as soon as the sun starts getting close to setting, the dew comes on very heavily. The trailer was getting up to 80% humidity on a regular basis, so I bought the vent covers and leave the vents open 24/7. I also installed screening between the kitchen exhaust fan and the wall, and hold that vent open with a clothespin. This has greatly lowered our interior humidity issues. After cooking supper in the oven tonight, with the windows closed, our interior humidity is 50%. Using the hood exhaust fan while cooking helps a lot.

    #6257
    Profile photo of Norma
    Norma
    Participant
    • Texas
    Cheers: 5 921

    Roger are you talking about an exhaust vent in the vertical wall?  I don’t have one of those.  :(   Might have to install one.

    Vents open all night, AC running…77% humidity this morning.  I did use the exhaust fan while cooking last night, and slightly after.  It’s so dang loud!  Probably the original one.  Put that on the list of things to replace.

    Probably doesn’t help that even though it’s not raining at the moment, outdoor humidity is 86%.

    Heater didn’t seem to do much besides dry and warm the carpet in front of where it was sitting.  I had it on low since it’s in the 70’s here.

    Thanks for the help, you two.  Lots of issues to resolve.

    1996 Honorbuilt Eldorado C320 "Lurch" | Chewbacca is my co-pilot

    #6282
    Profile photo of Roger & Sue Fell
    Roger & Sue Fell
    Participant
    • Edmonton, Alberta
    Cheers: 2 305

    I was referring to the vent over the stove. These usually have a flap valve on the outside of the RV that locks shut for travel, keeps the dust out, and you have to unlock once you park. It can be held open with a clothespin, I originally did this because it would bang in the wind, quite annoying, and then discovered it helped keep the trailer aired out much better when we left it during the work week. I installed window screen in the outlet to keep bugs from setting up home in the trailer, didn’t want to pull the filter to discover wasps! Yes, mine is very loud as well. That’s normal for for a small 12 volt motor with a propeller. I did see a mod on another site that used an automotive blower resistor to change it to a multi-speed with some additional switches to reduce the noise level.

    Once the RV is soggy, it takes quite a while for all the moisture to come out of the paneling and fabrics. You probably still have some moisture left from your plumbing misadventures!

    #6284
    Profile photo of Norma
    Norma
    Participant
    • Texas
    Cheers: 5 921

    My stove is against an inside wall.  I don’t think I have one of those.  Only exhaust fan.

    I do, however, have a window over the sink which against the outside wall.  It already has a screen.  I could open that.  I was keeping it open until it started raining, as it did allow some water in.

    Well, humidity is 82% this morning, after all night with the AC going.  It did rain some last night, though.

    I think you’re right about the plumbing fun…can’t wait to get all the carpet out as I’m sure that would help.

    Thanks, Roger…

    1996 Honorbuilt Eldorado C320 "Lurch" | Chewbacca is my co-pilot

    #6691
    Profile photo of Margo Schabel
    Margo Schabel
    Participant
    • Grand Blanc, MI United States
    Cheers: 445

    Our first stay in the trailer while its cooler outside and the windows are “swamped” with water when I opened the shades in the morning. :wacko:  Been raining and the high temp was 62 and lows in the 50’s.  Didn’t have any vents opened as it was raining so I am thinking of a small dehumidifier.  Camping world has the “Air Dry 1000″ .  5 star review.  Anyone used anything like that?  Says can be used while in RV.  Draws only 1.1 amps while plugged in.  Maybe only plug it in at night??  :scratch:

    #6694
    Profile photo of Roger & Sue Fell
    Roger & Sue Fell
    Participant
    • Edmonton, Alberta
    Cheers: 2 305

    Single pane windows will do that, especially with the blinds/curtains closed. It’s a temperature versus dewpoint thing. If you look at the bottoms of your windows, you’ll see small slits cut into the track specifically for the water to drain to the outside. As long as you keep these clean and open, you won’t have any damage to the trailer.

    I’m sure you’ve seen Ray’s previous post, the vent covers make a huge difference.

    #6707
    Profile photo of Norma
    Norma
    Participant
    • Texas
    Cheers: 5 921

    …and I’m gonna try bubble wrap on the windows this winter.

    1996 Honorbuilt Eldorado C320 "Lurch" | Chewbacca is my co-pilot

    #6710
    Profile photo of Marsha & Dewey
    Marsha & Dewey
    Participant
    • Eureka, California
    Cheers: 1 701

    Margo , that dehumidifier sounds like a good idea. Please post your opinions, if you get one.

    #6717
    Profile photo of Margo Schabel
    Margo Schabel
    Participant
    • Grand Blanc, MI United States
    Cheers: 445

    Left the roof vent open the one night it didn’t rain and the windows were not as bad.  Trailer is put away for the winter but will get a small dehumidifier for springtime and will post how it goes.

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