Many of you can probably remember a smelly closet in your grandparents’ house.

That stench was likely caused by excess humidity, which led to mold and mildew, which can also present health risks. There were very few ways to address this issue back then without extensive and expensive repairs, but luckily, that’s not the case now.

Today, you can stick an Eva-Dry dehumidifier in there and save your clothes and closet. Because it doesn’t use electricity and is reusable, you can place it in safes to keep firearms, collectibles, or other items from being damaged by humidity.

I’ve used the Eva-Dry dehumidifier for nearly a year, and to be honest, I’m obsessed with it. My clothes have never smelled fresher, and at under $25, it’s a no-brainer if you live in a humid area or need to keep moisture out of a confined area.

What is the Eva-Dry dehumidifier?

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Eva-Dry Mini Dehumidifier

Pros:

  • Very compact
  • Quiet
  • Can be used in safes
  • Under $25 on Amazon
  • Cordless
  • Renewable

Cons:

  • Unit gets very hot when plugged in

Eva-Dry dehumidifiers come in different shapes for various purposes, including some self-draining models, but today, we’re looking at the Eva-Dry Renewable dehumidifier. It’s a little smaller than a Nintendo Switch or a Nintendo DS if you’re old school, making it easy to store in safes or closets.

The renewable aspect refers to the non-toxic crystallized silica gel that attracts and absorbs extra moisture in the air without electricity and can be reused. Once the beads in the center display turn from orange to green, you plug it in to heat the unit to get rid of the absorbed moisture. It can then be used again, thus repeating the cycle.

It can work in spaces up to 333 square feet, which is larger than my last New York City apartment. So, it could even be used as a basement dehumidifier for some smaller homes. For this Eva-Dry review, I used one in a small bathroom and the other in a closet.

Eva Dry Dehumidifier Features

Let’s take a look at some of the most notable features of this nifty dehumidifier.

Renewable

The Eva-Dry dehumidifier uses crystallized silica gel to absorb four to six ounces of moisture from the air. The company claims it can be reused for about 10 years by heating the gel about every month to release the stored water (more on that in a second).

These gels are sometimes used in cat litter to reduce odors, and they can absorb up to 40% of their weight in water vapor. They capture the humidity by storing it in microscopic capillaries and holding it there until released—in the case of Eva-Dry, by being heated when plugged into a standard outlet. It takes about 10 hours to completely dry it out, at which point it can be reused wherever you had it. Be warned: The unit will get hot when charging, so it’s best not to touch the front of it.

The gel is orange and turns green when it’s at its maximum capacity and needs to be plugged in.

One thing to keep in mind is that you cannot customize how much moisture the gels absorb like you can with electric dehumidifiers.

Compact

Eva Dry Mini DehumidifierAnthony O'Reilly for Family Handyman

The Eva-Dry dehumidifier is the smallest we’ve tested, yet it can work in rooms up to 333 square feet, about the same as some electronic models out there (reminder: this only uses electricity to release the water vapors). This allows it to be stashed in a corner, on a shelf, or in most safes.

Although they’re technically sealed, humidity can still enter safes and cause rust or mold/mildew growth, which could damage what’s inside. For example, the inner parts of a firearm could rust if exposed to humidity, possibly causing it to malfunction or misfire.

You could even use it as a crawl space dehumidifier.

Long-Lasting

I know one of your top questions is, “How long does the Eva-Dry dehumidifier last?” To be honest, I don’t know. The company states it can hold anywhere from 4 to 6 ounces of water. For reference, that’s about three-quarters of a cup. I’ll get into how long it took to get there in a little bit, but the short answer is, “It depends where you put it.” The company claims it can last for 20 to 30 days.

Cordless

Eva Dry Mini DehumidifierAnthony O'Reilly for Family Handyman

For my money, one of the best features of the Eva-Dry dehumidifier is that it’s cordless. You might be asking, “How do you plug it in?” There’s a plug located on the back that can be used when it’s time to heat the silica gel. This makes it compact and portable, and because it doesn’t use electricity to run (only when drying out), it is 100% quiet.

How We Tested It

Eva Dry Mini DehumidifierAnthony O'Reilly for Family Handyman

I originally tested the Eva-Dry dehumidifier when researching our best small dehumidifiers roundup, and I loved it so much I bought another one to use elsewhere around the house. I’ve had one in the master bedroom closet and the other in the laundry room.

I wrote down when I first placed one of the units in their respective location and then marked the date when the silica gel turned from orange to green, indicating when it had absorbed all the moisture.

As you could probably guess, the one in the laundry room needed to be recharged much quicker than the one in the closet. The former only took about five days, and the latter lasted about three weeks to a month, depending on the weather.

It’s hard to measure this, but I’ve also kept track of how “fresh” the closet has smelled and felt, and I can tell you there’s been a considerable change. We live in the suburbs of Charlotte, NC, where we’re sweating harder than a snowman in Phoenix from May to September due to the excess humidity. To be clear, it’s not going to provide relief the way my Midea dehumidifier does, but without it, I’d have damp clothes.

I prefer to line-dry most of my laundry, which is pretty difficult with all that excess water already in the air. Since using the Eva-Dry Renewable dehumidifier, my clothes have dried quicker and more thoroughly.

Lastly, I timed how long it took to heat the unit and turn the silica gel from green back to orange so it could go back in its place. It was generally around the 10-hour mark advertised by the company, giving or taking an hour depending on the temperature of the place where you place it.

Another suggestion for a dehumidifier for larger spaces? Check out our Frigidaire dehumidifier review.

FAQ

Eva Dry Mini DehumidifierAnthony O'Reilly for Family Handyman

How long do Eva-Dry dehumidifiers last?

Eva-Dry says its renewable dehumidifiers can last about a month before needing to be plugged in to release the water, though it can be shorter or longer than that depending on how humid it is in the area you put it.

Can you leave Eva-Dry plugged in?

No, it’s advised to unplug the Eva-Dry Renewable dehumidifier after it has released all of the stored water vapor so you don’t damage the silica gels or the unit, which gets hot when plugged in.

How does the Eva-Dry dehumidifier work?

The Eva-Dry Renewable dehumidifier uses crystallized silica gel that attracts, absorbs and stores water vapors using microscopic capillaries that can hold up to 40% of their weight. The gels turn from orange to green when full and will hold onto the moisture until it’s released via the heat produced by plugging the unit in. Once all the water’s gone and the gels are orange, the dehumidifier can be placed back in its original spot (like a musty closet).

What Other Reviewers/Experts Had to Say

The Eva-Dry Renewable dehumidifier has a 4.2 average rating on Amazon, with more than 20,000 of the nearly 33,000 reviews being five stars. “Its rapid, effective, and energy-efficient design has been a welcome change, as it quickly removes excess moisture from the air with no leaks, spills, or unpleasant odors,” says Florida resident and five-star reviewer CZDM.

Negative reviewers said the unit didn’t perform as advertised, with some showing pictures of hardened spices or other signs of excess moisture in areas where they had placed an Eva-Dry dehumidifier.

“[I] put [it] back in the closet, this time adding another dehumidifier bag that I bought from Home Depot, and in two weeks that bag was full of water, but this little unit still shows the same orange window like the day I received it,” says one-star customer reviewer Shaun Meyer.

Eva-Dry Dehumidifier vs Pro Breeze Dehumidifier

Pro Breeze produces and sells air conditioners, heaters, air purifiers and dehumidifiers, like Eva-Dry. The brand doesn’t have a cordless, renewable option like Eva-Dry, though it has several small dehumidifiers. I’ve used the Pro Breeze Electric Mini dehumidifier, and think it’s another great choice for small spaces.

Right off the bat, the Pro Breeze has a larger capacity than the Eva-Dry renewable, capable of holding up to 8.45 ounces of water, while the Eva-Dry can hold anywhere from 4 to 6 ounces.

The Pro Breeze is good for spaces up to 205 square feet, which is actually smaller than the Eva-Dry’s 333-square-foot coverage area. Still, I think there’s a case to be made for the Pro Breeze because it’s more efficient at its job.

You’ll feel relief from the humidity much quicker with the Pro Breeze than the Eva-Dry, because the electric unit is more powerful at sucking in water vapors than the crystallized silica gel. So if you’re looking for a dehumidifier because it’s uncomfortable in a room or RV/camper, go for the Pro Breeze. If you’re just looking to keep excess moisture from ruining a small area like a closet or safe (or you’re on a tight budget), the Eva-Dry is your pick.

By the way, consider complementing your dehumidifier with a compact air purifier like the Blueair Air Purifier to eliminate other airborne nuisances.

Final Verdict

There are very few products that I outright recommend to virtually everyone, but I can’t think of a single person (minus those in climates where excess humidity simply isn’t a concern) who shouldn’t buy the Eva-Dry Renewable dehumidifier. The cordless, compact, renewable and energy efficient. Most importantly, it’s incredibly effective at its job, at least in my experience, with two of them across two different apartments and one home.

It’s not ideal for making huge rooms more comfortable, but it can prevent excess moisture from ruining clothes, firearms, or collectibles sensitive to water vapors.

Where to Buy the Eva Dry Dehumidifier

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The Eva-Dry Renewable dehumidifier is available on Amazon for less than $25. It is also available at Home Depot for the same price.