Gun safe dehumidifier - which to get?


August 7, 2007, 05:12 PM
Finally decided to get the AMSEC 30 gun BF-6030 gun safe. Should I get the 12" or 18" Goldenrod dehumidifier? Or are there other options that would work better? I just had a new outlet installed in the closet where the safe is going to go.

Also thinking of keeping my rechargeable (plug in to dry out) dessicant dehumidifier that I've been using for added protection.

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Sheldon J
August 7, 2007, 05:23 PM
Stick with the Goldenrod type of dehumidifier, the others such as the silica gel packs will actually remove the moisture but eventually need to be recharged via a heat job in the oven, and you have to guess when on most of them, the Heater type just works by keeping the inside of the safe just a smidgen warmer than the outside so no moisture can condense on anything inside, and they last forever with no maintenance. As to how long 12 VS 18 bigger us usually better if there is room.

August 7, 2007, 05:30 PM
GoldenRod says to use the biggest one that will fit flat on the floor.

I'd leave the closet door open for circulation when possible.

I have a 24 and an 18 in one safe, but it's in a damp cave of a basement.


August 7, 2007, 05:38 PM
Speaking from lab experience:
A couple of mason jars filled with glass wool and cupper sulphate.
Cheap, highly effective, easy to dry out, doesn't break, visual indicator of degradation*.

*Colour changes as the desiccant absorbs moisture.

August 7, 2007, 05:58 PM
I'm an electrical engineer and usually want to use electrons for everything, but I prefer the non-electric dehumidifiers. You an buy silica gel in various sized containers. The larger the container, the more humidity it'll absorb and/or the longer it'll absorb it. There are other chemicals that absorb water, but the silica gel is very effective and probably some of the most cost effective as well.

Some drying agents have a built-in indicator to show when they're reaching their maximum absorbing capacity. If not, you can buy very inexpensive moisture indicator strips. They're little cardboard cards with a chemical indicator.

Silica gel can be renewed by baking in a 200 F oven for a few hours. Yes, that uses electricity too, but I do this in the winter when the heat is also used to heat my house. During the summer, the GoldenRod will be producing heat that you will need to pay for twice. The second time will be when you run the air conditioner to remove that heat from your house.

The GoldenRod works well, but if the safe has a decent door seal, there is no place for any moisture to go. The silica gel will absorb it fairly quickly.

I wouldn't advise leaving the door cracked to let out the moisture for a couple of reasons. It also lets IN the moisture, and a safe isn't very secure from fire or theft if the door is left ajar.

Probably the best deal on silica gel is in the cat litter aisle of your grocery store. You can buy silica gel that is intended to be mixed with cat litter as an absorbent. It's about $5 for a large jug, and it has indicator mixed in with it so you'll know when it's expended. You should be able to set the jug in the bottom of the safe and remove the lid. Every winter, dump it on a cookie sheet and bake it, let it cool, and return it to the jug and put it back in the safe. It uses less energy than a GoldenRod, and it's a LOT cheaper than a GoldenRod.

August 7, 2007, 05:59 PM
Unfortunately I can't leave the closet door open due to the damn cats. But it is dark, cool, and our clothes seem to do fine in there - humidity in our house is usually under 45% even during the summer.

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