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Humidity in gun safe ?

Discussion in 'Shooting Gear and Storage' started by lonewolf5347, Dec 27, 2019.

  1. lonewolf5347

    lonewolf5347 Member

    Joined:
    Jul 13, 2005
    Messages:
    470
    Was looking to install a 12" heat rod in my gun safe
    The safe measurements
    50" H
    24" D
    20" W
    WILL THE 12" ROD DO THE JOB
     
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  2. herrwalther

    herrwalther Member

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    May 1, 2013
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    5,053
    According to the website, 12" Goldenrod is adequate for 100 cubic feet of storage space. So yes, 12" of most heat rods will work for you. FWIW, my safe is 59x22x30, I use a 12" Liberty rod and several large dessicant packs to keep moisture as stable as possible.
     
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  3. dcloco

    dcloco Member

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    Jan 31, 2006
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    393
    Curious, but have not figured out why adding a HEAT source, that will attract moisture, to the inside of a metal box is a good idea????/
     
  4. RavenTai

    RavenTai Member

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    Dec 15, 2008
    Messages:
    109
    nothing about heat attracts moisture, as air cools its capacity for moisture decreases, the relative humidity will increase until it hits its dew point (100%) where the excess water the air cannot hold will condense out as a liquid, the opposite is also true, As air warms its capacity for moisture increases, and its relative humidity decreases. corrosion responds to relative humidity, below 40% it is slowed to almost a standstill. well oiled 50% and 60% are tolerable.
     
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  5. ColtPythonElite

    ColtPythonElite Member

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    9,330
    Buy a hygrometer and measure your humidity instead of guessing.
     
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  6. GBExpat

    GBExpat Member

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    Nov 5, 2007
    Messages:
    5,718
    Location:
    Rural, far beyond the beltway, Northern Virginia,
    This.

    Here is a pic of the top of my north gunsafe. Its ThermoHygrometer can be seen in the upper left. ;)

    2v2E2a6sFxAW38L.jpg

    Buy a 12" rod if your safe will not readily accommodate an 18" and see if it works for your situation.
     
  7. CapnMac

    CapnMac Member

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    Location:
    DFW (formerly Brazos County), Texas
    The presumption is that, by keeping the internal temperature above the dew point temperature, humidity is less likely to condense on the contents.

    This can be complicated if one is in the humid South, especially littoral and maritime climates, where the Dew Point might be higher than ambient--Room--temperature.

    A small heat source is simpler and more compact than an actual dehumidifier--where the humid air is passed over a chilled plate to y pass the air through the dew point and extract the water vapor mechanically. Which would want a drain line. Which is also the limitation with desiccates, they need to be removed so that they can "dry out." (Surface area of desiccants is another issue.)
     
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  8. Dan Forrester

    Dan Forrester Member

    Joined:
    Mar 21, 2003
    Messages:
    764
    Location:
    FL
    Years ago I was living in north Florida and and purchased my first gun safe. It was a big heavy “Sturdy Safe” made with 4ga steel.

    I keep the safe out in the garage where temps would fluctuate wildly. Sometimes it would be cool for a few days. Might even get down down to freezing. Then it would warm up pretty quickly.

    The safe with all its steel would retain the cool for a few days and during this time period would condense water on the outside until the safe warmed back up. It was just like a cold drink sitting outside. It would condense water like crazy.

    I think the scenario above is what the dry rod it trying to prevent.

    I now live in south Florida and don’t have the same temp fluctuations. I keep an Eva-Dry EDV-1100 in my safe. Every two weeks or so I drain it. It keeps the humidity between 45-55. Which is much better than the usual 75-85% it’s at outside.

    I like to keep two hygrometer with the safe. One on the outside of the door and one on the inside of the door. That way I can check the humidity before I open up the safe and then again once inside.

    Dan
     
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  9. herrwalther

    herrwalther Member

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    One thing I recommend is spending 3 or 4 extra dollars/bucks to get a hygrometer that shows minimum and maximum temperature and humidity in the safe. Knowing how high and how low both go helps immensely in solving rust problems during storage. You can look at a hygrometer during the day and it is 55% but gets to 70 or 80% at night. Just checking mine, humidity has ranged between 56 and 67%. It has been about a year since I reset the records.
     
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