Asking the best type of dehumidifier is kind of like asking the best model of hunting rifle. Everyone has their preferences, and everyone finds a certain style fits them best.
In the case of dehumidifiers, it’s good to start by choosing either a desiccant or electric type.
If you don’t have a lot of moisture problems, and if an electrical connection is not available or too difficult to access, then the desiccant option might be the right choice for you.
The Browning Sacc Dry Zone is a vented box of moisture-absorbing material, much like the little packets you find in foods or medicine, but on a much larger scale. This is also similar to the RV and closet packs you can find at retail stores, with one important exception—the Browning pack can be recharged in the oven. That means that should the pack ever absorb to its capacity, you can place it in a warm oven to dry and reactivate it. You can repeat this process indefinitely. No electricity, no fuss, no problem. The Dry Zone protects up to 37 cubic feet of space, about the volume of a standard 30-inch-wide safe. This product retails for $34.95
For an even more convenient desiccant solution, try the Eva-Dry E-333 dehumidifier. With this product, the desiccant crystals are enclosed in a plastic body, and recharging is achieved by plugging the unit into an outlet. Convenient color-changing bars indicate when the crystals are spent and in need of reactivation. The lifespan of this product is up to 10 years. The Eva-Dry is rated for 333 cubic feet, and is eco-friendly and non-toxic. Retail price $34.95
If you have more challenging moisture problems, or changes in temperature extremes that come from keeping your safe in a non-climate controlled area such as a shop or garage, think about investing in an electric dehumidifier. They are only a few dollars more than desiccant-type units, but provide more aggressive moisture control.
The Browning EverDry electric dehumidifier is an 18-inch-long bar that plugs into a standard outlet. Most safes have a hole in the back or side to allow for the cord, which detaches from the unit for installation. This unit should be used on safes 30 inches wide or larger to avoid touching the sides of the safe. The EverDry retails for $39.95
Another option in electric dehumidifiers is the Browning Flexible EverDry. This unit is flat and flexible, and can be bent around the corners and contents of your safe. Like the bar unit, the cord on the Flexible is removable to help with installation. This products retails for $49.95
Ultimately, the decision on the best gun safe dehumidifier is an individual choice, but these suggestions should give you some idea of what’s on the market. These models are available at http://www.gunsafes.com/store/Search.aspx?SearchTerms=dehumidifiers