What Temperature Should a Dehumidifier be Set at in a Gun Safe

The next question is, what is the appropriate temperature to set in a dehumidifier?

Putting a dehumidifier alone in your safe does not resolve the moisture problem. Too much moisture will corrode metal parts. And too little humidity will damage the wood components of your ammunition. Ergo, not setting the proper temperature can be bad for your firearms. And that is very dangerous.

The ideal temperature for a dehumidifier in a gun safe will depend on several factors, including the size and type of dehumidifier you are using, as well as the ambient temperature and humidity level in the room where the gun safe is located.

In general, it is recommended to set the temperature of a dehumidifier in a gun safe to between 50 and 70 degrees Fahrenheit (10 and 21 degrees Celsius). This temperature range is generally considered optimal for reducing humidity and preventing the formation of rust and other types of corrosion in your firearms.

Afloia Mini Dehumidifier

What temperature should a dehumidifier be set in a gun safe?

A gun safe is helpful for more than just storing weapons. It is also to preserve and maintain the weapon’s value. However, when locked within a certain period, it can be infested with various elements that can degrade its quality.

It is then that a gun storage humidifier comes in.

What should I set my gun-safe dehumidifier at? The most comfortable temperature to put in a safe dehumidifier is 50% to 60%. That will release a warmth that will keep the molds and dust out of the safe.

Moreover, the National Rifle Association (NRA) concludes that gun storage’s best temperature and humidity are 30% to 50% humidity. And coordinate it well by setting a room temperature of 70 degrees Fahrenheit. (1, 2)

Check more here on what humidity should a gun safe be at!

What will happen if the dehumidifier is not set at the right temperature?

temperature device

Humidity levels that are too high can cause mold to develop in your gun safe. And the hotter the temperature, the more moisture it can hold. Then it will go into your firearms which can cause malfunctions.

Additionally, lower humidity raises evaporation, which reduces the temperature and causes sensible cooling. (3)

That said, humidity depends on the level of temperature in the atmosphere. And it is a year-round situation.

What Is the Possibility that Your Gun Safe Is Exposed to Extreme Humidity?

The response to the question depends on where you live and where you keep your guns. Or where you place the dehumidifier in a gun safe.

Using an HVAC system to monitor humidity in your home will solve this problem. That is because this system regulates hotness and coolness.

Your weapons would almost certainly rust depending on your location; say, you live in a coastal town. That is due to the salty wind swirling through the area. And if your house is in an appropriate temperature range where metal condenses, it is protected. However, it is safe to use a temperature and humidity management system or device to regulate the room’s temperature.


Failing to set the recommended temperature in a gun-safe dehumidifier will cause a problem. Your safe will grow mold and rust inside the gun’s components. And this could be very dangerous.

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Here’s an additional learning guide on how to measure a dehumidifier for a gun safe. Until our next article!


(1) NRA – https://www.bbc.com/news/world-us-canada-35261394
(2) Fahrenheit – https://www.britannica.com/science/Fahrenheit-temperature-scale
(3) evaporation – https://www.usgs.gov/special-topic/water-science-school/science/evaporation-and-water-cycle

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