What Are The Best Dehumidifier For Gun Safe Options?

Eva-dry E-333 dehumidifier for gun safe use

Do you own a gun safe? If you do, then you need to pay special attention to the humidity inside. Even though many people don’t realize this, a dehumidifier for gun safe protection is a very important aspect of gun ownership.

The humidity levels inside of a gun safe can cause some serious problems. By getting a good dehumidifier, you can avoid these issues and keep your firearm in good working order.

A dehumidifier for your gun safe is a great investment. We know that there are many reasons why using a gun safe is a good idea, including:

  • A safe can protect your weapons from theft
  • It can even provide protection against fire
  • It will protect your firearms from damage that can result from too much moisture in the air.

However, some people don’t realize the importance of gun safe humidity control.

Should You Choose a Dehumidifier For Your Gun Safe?

When gun safe moisture control is not regulated, the moisture content can increase. This leads to corrosion forming on metal. Corrosion on guns leads to rust and many other problems.

Corrosion can have a huge impact on how your guns operate and how long they will last. Corrosion on firearms can lead to issues with firing accuracy and consistency. Plus, for collectors of antique guns, corrosion will whittle away at the value of these items over time.

This is why you need to consider adding a dehumidifier to your gun safe. With this in mind, make sure to have a look at a list of the best gun safe dehumidifier reviews below.

Our Picks Of The Best Dehumidifier for Gun Safe Use

In the table we outline:

  • Our selection of the best dehumidifiers for gun safe options on the market
  • Images, including make and model
  • Most important features and specifications
  • Price – average price range you will see on Amazon –
    • $ = under $20
    • $$ = $20-$30
    • $$$ = more than $30
  • Customer ratings – average customer rating you will see on Amazon. This can be handy in making your decision.
ProductCoverage / TypeProduct WeightProduct DimensionsWarrantyStarsPrice and More Info
GoldenRod Dehumidifier

GoldenRod Original Dehumidifier
100 ft3

9.6 ounces24.2 x 5.1 x 0.9 inchesLifetime

4.8 out of 5 stars

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PEET Dryer and Dehumidifier

PEET Dryer
300 ft3

14.4 ounces9 x 7 x 4 inches5 years

4.5 out of 5 stars

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SnapSafe Safe Dehumidifier

Cannon SGD57

2 pounds9 x 8 x 6 inchesLife of the product

4.5 out of 5 stars

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Eva-dry E-333 Mini Dehumidifier

New and Improved Eva-dry E-333
333 ft3

0.99 pound9 x 8.25 x 2.88 inches5 years

4.4 out of 5 stars

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Steelwater Gun Safe With Dehumidifying Box

Steelwater Gun Safe With Dehumidifying Box
n/a350 poundsOutside Dimensions(HxWxD): 59” x 22” x 16” (Add 2 3/4” for handle)

Interior Dimensions (HxWxD): 55 3/4″ x 19 1/2″ x 12 1/2″

Usable Interior Dimensions(HxWxD):55 3/4″ x 19 1/2″ x 10 1/2″

4.6 out of 5 stars

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But to begin with, a bit about…

The Different Types of Gun Vault Dehumidifiers

There are two very different varieties of dehumidifiers that are effective in regulating the humidity in a gun safe. They are the:

  • Electric dehumidifier, and
  • Desiccant dehumidifier.

Electric Dehumidifier

With an electric dehumidifier for use in a gun safe, you plug it into a power outlet. The disadvantage to using an electric dehumidifier is that it requires a hole drilled through the steel wall of your gun safe. The hole allows the electrical wires to run from the wall power outlet to the dehumidifier sitting inside the safe.

The electric dehumidifier also requires a power connection at all times to work.

Electric dehumidifiers are the most popular choice for gun owners for one specific reason… they are excellent at drawing moisture out from every corner of a steel-walled safe.

Desiccant Dehumidifier

A desiccant dehumidifier for use in a gun safe uses a form of drying agent to draw moisture from the air. In other words, it works like a sponge to draw up all the water into the drying compound.

There are a few advantages to using this kind of dehumidifier. The most obvious benefit is that it does not need electricity to operate. This means no drilling of holes into the safe and no wires running from it.

This also means the gun safe can sit anywhere in your home without you having to locate it near a power outlet.

Another great feature about desiccant dehumidifiers is that you can renew or reuse them. Depending on the specific model of the dehumidifier, the drying compound can last up to several months.

The renewing or recharging of the compound used in a silica gel-style dehumidifier is easy. As these beads draw moisture from the air, you need to dry them out to keep working. Baking them in an oven dries them which ‘recharges’ them for further use.

Our Best Gun Safe Dehumidifier Reviews

When it comes to gun safes, dehumidifiers are a great addition. Not only do they keep your guns safe from rust, but they also inhibit the growth of mold and mildew. However, not all dehumidifiers are the same. There are a few things you should know before you buy a gun-safe dehumidifier.

For your convenience, we have put together some information on the best options if you are looking to buying a dehumidifier for your gun safe. We’ll explain some of the most popular brands, as well as a few of their pros and cons.

Depending on the size of your safe or your collection, there are quite a few different options. So you should be able to find something to suit your circumstances.

Here are our picks of the best dehumidifier options:

GoldenRod Dehumidifier

Goldenrod Original Dehumidifier for Gun Safes

The best dehumidifier on our list for gun safe protection is this amazing-looking product.

As the name suggests, this electric dehumidifier for gun safe use is a ‘golden rod’ designed for use in small, tight quarters, such as a gun safe. Its design takes up little space and provides superior coverage of spaces measuring up to 100 cubic feet.

Made in the United States, the manufacturer claims this product is a permanent maintenance-free solution.

The benefits include a hassle-free, lifetime warranty and easy installation. The cord and plug are detachable making it quick and fast with no tools required. Once plugged in, the Golden Rod gets warm and stays warm as it draws away moisture inside the safe.

Other users of this dehumidifier suggest combining this product with a desiccant one for full coverage. This, of course, depends on the size of your gun safe.

Either way, this dehumidifier did not get to the top of our list by accident. It is far superior to any other product we have seen and we highly recommend it.

This is our top pick of all our gun safe dehumidifier reviews.


Lifetime warranty
Made in the USA
Different sizes to fit your particular gun safe
Easy to set up


As mentioned, this style of dehumidifier for your gun safe comes in different sizes. It has been advised to get the longest one that will fit in the bottom of the safe. Some complaints related to getting a smaller one when they should have gotten the next size up
Some report that the unit gets too hot

Click here for more information on the GoldenRod Original Dehumidifier, and make sure to check out the short video below…

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PEET Dryer for Gun Storage

Peet Dryer SafeKeeping Dryer and Dehumidifier for Gun Safes

This dehumidifier creates warmth from thermal convection, using dry air to gently remove humidity.

PEET dryers have a long history dating back to 1968 when they entered the marketplace with a footwear drying appliance. From that beginning, the company has expanded to include a variety of drying solutions.

This particular dehumidifier uses a standard 110-120 volt power outlet. The electrical cord comes apart to allow for easy installation.

Feedback provided in gun vault dehumidifier reviews of this product are generally positive. The removable plug and cord earn top marks in making the job of installing a dehumidifier inside the safe easy. However, the results vary for some other users… a few state that the PEET Dryer does very well, while others claim better results with a silica gel dehumidifier.

Depending on the size of your gun safe and the number of weapons in storage, results may vary to some degree.


5-year warranty
Safe and easy-to-use
Silent operation
Low (15 watts) power consumption


It does not have a power light to indicate that it is working
Some report that the unit has a burning smell when plugging it in for the first time
Some report that there was little change in humidity after use

Click here for more information on the PEET Dryer for Gun Storage.

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SnapSafe Safe Silica Gel Dehumidifier

SnapSafe 75902 Silica Gel Dehumidifier

This silica gel dehumidifier provides protection for areas measuring up to 57 cubic feet. It is small (9-inches by 8-inches by 6-inches) but it works as well as the larger ones.

The non-toxic drying substance has an indicator cap that turns pink when it is full. The recharging is easy with a bake in the oven and the manufacturer says this product will last a lifetime.

This dehumidifier for gun safe use is a canister-style unit that contains 750 grams of silica gel in a perforated round steel container. It works well and is rated high by most that have purchased it.

One drawback is that the product description does not provide much information. However, it is an efficient dehumidifier used for gun safe protection.

The key here is to track what is happening to the silica gel in this dehumidifier. There are indicators to make it easy to identify when it needs recharging. Recharging this or any silica gel-style dehumidifier extends the life of the product and is easy to do when needed.


Reactivates easily
Provides a lifetime of use
Has easy-to-see built-in indicator
Small size


Some report that the unit rust
Limited instructions / product information
Needs to be recharged more often than thought

Click here for more information on the Cannon Safe SGD57 Dehumidifier.

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Eva-Dry E-333 Renewable Mini-Dehumidifier

New and Improved Eva-Dry Mini Dehumidifier E-333

The model number of this silica gel desiccant dehumidifier for gun safes lets you know a little about this product. The manufacturer says it can eliminate excess moisture in the air of an area up to 333 cubic feet. They also say it will last up to ten years and back that claim up with a five-year warranty.

This rechargeable desiccant dehumidifier features an indicator window that changes from blue to pink when it has achieved capacity.

It is not only recommended for use as a gun cabinet or safe dehumidifier… it is a perfect fit for closets, boats, RVs, bathrooms, and anywhere else excess moisture can be an issue.

Other gun owners say it works well. Providing you recharge it when needed, you will have a long use out of this particular model.


Works up to ten years
Easy to recharge; just plug it into an outlet – no refilling
Silent and easy to set up
5-year warranty


Some report that it has little effect on the humidity, but others report that it works very well
Needs to be recharged more often than thought

Click here for more information on the Eva-Dry E-333 Dehumidifier, and to see it in action, make sure to watch the video below…

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Steelwater Gun Safe With Dehumidifying Box

Steelwater Gun Safe with silica gel rechargeable dehumidifying box

If you don’t yet have a gun safe, then this may be a good option for you. This gun safe comes complete with a 200-gram rechargeable silica gel dehumidifying box. In addition to this, if you want to install your own dehumidifier which requires an external power source (such as the GoldenRod Original Dehumidifier mentioned above), then this gun safe comes with a 1/2 inch hole pre-drilled through the back of the safe, so you don’t have to drill your own hole to run the power cord.

Other than that, this gun safe is fire-rated for 60 minutes, is made from 12 gauge solid steel, has interior LED lighting, and has 4 x 1/2-inch pre-drilled anchor holes as well as 1/4-inch steel plate floor for added security when bolting it to the floor.


Comes with a rechargeable dehumidifier box
A hole is pre-drilling in the back making electric dehumidifier installation easy
Rates for 60 minutes fireproof
Interior LED lighting


Doesn’t hold as many guns as expected
This is a heavy unit (350lbs) so some people have had issues with delivery

Click here for more information on the Steelwater Gun Safe.

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Do You Need To Use a Gun Safe Dehumidifier?

Gun safes are often installed in cool, dark places that don’t get much air circulation or light. These environments are often damper than others. Having a high moisture content in the air, as well as in your gun safe, can have a damaging effect on your gun, ammunition, and anything else of value.

Any moisture sealed within the safe will condense on the items within it when the temperature cools. Besides preventing mold and mildew from growing on all surfaces within the safe, gun safe dehumidifiers also prevent rust and corrosion from forming as a result of the condensation build-up on your precious metal items.

Gun safe dehumidifiers are designed to extract moisture from the air within the gun safe and/or circulate warm dry air 24/7, drying the air and protecting everything within the safe from the damaging effects of moisture build-up.

Unless you choose to purchase a gun safe with a dehumidifier built into it, you should install a dehumidifier in your gun safe. Gun safes with built-in dehumidifiers are not common, so most people opt to install a dehumidifier into their gun safe using one of the options reviewed above.

Where Do You Put A Dehumidifier In A Gun Safe?

There are two main locations inside a gun safe where a dehumidifier works best. Either on a shelf inside the safe or on the safe floor. Either location can work ok, however many people prefer to install their gun safe dehumidifier on the floor due to warm air from the dehumidifier rising to protect everything in the gun safe better.

Where Is The Best Place To Install A Gun Safe?

There is no ideal place to put a gun safe, however, there are factors that will help determine the best location. For example, you may wish to consider the possibility of water damage, a fire, or the potential for burglary (see below).

Is It Ok To Keep A Gun Safe In The Garage?

A garage is a bad location for a gun safe. This is for a few reasons. Many of the tools stored in a garage contain fuel and chemicals that are flammable. Should a fire occur, you risk losing your guns as a result. Also, garages are often separated from the rest of the house (if not a separate building, then behind a closed door). They are also sometimes easier to gain entry to, and contain a lot of expensive equipment that can quite easily be sold for cash. For these reasons, thieves often target garages, which means that storing your gun and ammunition in a gun safe dehumidifier in the garage may not be the best option.

Is A Gun Safe Dehumidifier A Good Investment?

Yes, it is. By being able to measure and monitor the humidity level where your guns are stored, you will be able to prevent them from getting damaged. Too much humidity can cause corrosion and gun stocks can become damaged when the humidity is too low. Therefore, regulating the humidity in your gun safe is vital.

What Humidity Is Bad For Guns?

The best humidity level for gun storage should be between 30% and 50% at a room temperature of about 70°F / 20°C. The NRA (National Rifle Association) states that should the air become dryer than 20% relative humidity (RH), gun stocks may be negatively impacted. Above 50% RH corrosion can form which can also damage guns and ammunition.

Other Frequently Asked Questions

When should you use a gun safe dehumidifier?

A gun safe dehumidifier is responsible for removing the humidity from the environment in which your weapon is kept. Without the gun safe dehumidifier, your weapon is likely to rust and corrode. Furthermore, a gun safe dehumidifier is designed to extend the life of your weapon.

Therefore, if you keep your gun in a gun safe, we always recommend that you use a gun safe dehumidifier of some kind.

What are the most important things to consider before buying a dehumidifier for gun safe?

There are a few important things to consider when looking to buy a gun-safe dehumidifier. These include:

  • You should check how the dehumidifier removes moisture. Desiccant dehumidifiers work by adsorbing water vapor from the air, and can be very effective in small spaces like gun safes. On the other hand, electric dehumidifiers specially made for gun safe use also work well. However, since they need a constant power source, they may require a hole to be drilled into the safe. The other type os dehumidifier commonly used in households is the refrigerant-style dehumidifier. These dehumidifiers move air across cold coils and condense moisture in the air and collect it in a bucket or drain via a hose. This style is typically bigger in size and is not normally used in gun safes.
  • another thing to consider is how big your gun safe is and how much moisture the dehumidification system needs to remove. If you have a big safe, then buying a small dehumidifier may not do the job you need it to.

What are other gun-safe accessories that are important?

There are certain accessories that are essential to anyone that owns a gun safe. The most important accessory, we believe, is a gun-safe dehumidifier. However, there are some other accessories that you may want to consider:

  • A gun safe light inside of a safe is very important, as it allows you to see inside of the safe at night or in low light conditions. These lights are mounted on the inside of the door and shine on the floor inside the safe, so you can see the contents easily. Some models also have an adjustable angle so you can aim it wherever you need to in your safe.
  • A gun safe key lock box is a valuable addition to any gun safe because it allows you to keep your keys in a place where they are always available, but still secured. In addition, a key lock box allows you to keep your keys from children, a spouse, or anyone else who may have access to your gun safe. Some safes may use a combination lock, while others will use a digital keypad. For those looking for added security, biometric locks with fingerprint recognition are available.
  • A gun safe fan will circulate the air in your small gun safe. This is very important because the air in your safe will become stale and if you are a long-time gun owner, then you know that stale air smells bad. If your gun safe smells bad then you might not want to store your gun in your safe.

Final Thoughts on Dehumidifiers for Gun Safe Use

Protecting your investment comes in many different forms. It can include insurance, alarms, and dehumidifiers. By implementing gun safe moisture control systems, it will keep your firearms safe from their most dangerous foe, corrosion.

Rust can destroy the look, feel, and value of your gun. This is why it is important to not only keep your gun maintained, but to put in place gun safe humidity control. This is the best way to keep corrosion at bay.

As we have outlined above, there are many dehumidifier options for gun safe protection. So depending on the size and location of your gun safe, you should be able to find a solution to protect your gun collection.

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