I felt inspired to update this article about a best dehumidifier for gun safe, or any safe. Is it the best? Well, this one has worked well for me, and I’ve been using it for many years.
Best is subjective. I have been using this particular dehumidifier (for gun safe – or any safe) for many years with great success.
Here’s what I like about this dehumidifier, and why I think it’s one of the best for a medium size or larger gun safe (or any safe).
Best Dehumidifier For Gun Safe, Or Any Safe
Do you store firearms in a gun safe? Do you live in a humid climate? Even if you don’t, you need to keep your firearms dry (common sense!).
If you do have some sort of dehumidifier for your gun safe, I’m sure the rest of us would be curious to know what you use, or how you deal with that…
Do you keep cash in a personal safe? Important documents? You might want to keep them dry! If they’re sitting in there for a long time, they might get damp, or worse.
Eva-Dry Mini Dehumidifier
“Works for areas up to 333 cubic feet”
This is their latest model, slightly different from my original purchase years ago:
(view on amzn)
No Cords, No Batteries
You don’t have to plug in this dehumidifier while in use.
Simply place the dehumidifier inside your gun safe (or any safe). It has excellent capacity to absorb moisture, and will remain active for a long time before the silica beads become fully absorbed with moisture. After which you renew it (recharge it). I’ll explain in a minute…
The Eva-Dry mini-Dehumidifier Moisture Gauge
The mini dehumidifier has the capacity to adsorb approximately 4 to 6 ounces of moisture out of the air.
It’s super easy to know when it’s time to renew the silica beads. Simply compare the color of the beads (viewable through a window) to that of the humidifier color gauge.
All you have to do is look at the color of the silica beads to know whether or not it needs to be renewed.
Eva-Dry has a newer model (pictured above) since my own purchase years ago. The following images below are slightly different from today’s product. The view port is different, and the bead colors are different.
Image: Shows color of silica beads in this example they’re dry (left), and the unit temporarily plugged-in while renewing (right).
How To Renew the Silica Beads
To renew the silica beads you just plug it in to any 120-volt AC outlet.
It does not need to be plugged in, or powered, during normal operation. Instead, when it’s time to renew, that’s when you plug it in – to dry out the silica beads. You simply plug the dehumidifier into an ordinary wall outlet.
When it’s plugged in, it heats up internally, which removes the moisture as the silica beads dry out. It takes about 10 hours.
Eva-Dry mini-Dehumidifier Dimensions
The ‘Eva-Dry’ dehumidifier is referred to as ‘mini’.
Latest model dimensions: 9 x 8.25 x 2.88 inches
Cubic Volume Absorption Of Moisture
What size dehumidifier? This dehumidifier is actually designed to work in closet size spaces.
The moisture absorption specification indicates 333 cubic feet.
A typical upright gun safe (volume – cubic feet) is much less than that. So this dehumidifier will last a long time in there before needing to be renewed.
For example, if your safe is about 5 feet tall, 2 feet wide, and a foot deep, that’s only 10 cubic feet. Even a very large gun safe might only be about 30 cubic feet inside.
Here’s their mini-dehumidifier which they rate at 500 cubic feet, and absorption up to 8 oz. of moisture. I don’t have this one, but if you’re looking for a bit more capacity:
NOTE: It’s common sense to lightly coat the critical surfaces of one’s firearms with appropriate oil for long term storage. Taking them out once in awhile and cleaning them will likely avoid issues with humidity. However a dehumidifier provides extra insurance against such issues.