EASY TO USE & RENEW: Just place your mini dehumidifier and go! This helps to keep small spaces up to 333 cubic feet dry and odor-free. 

MINI DEHUMIDIFIERS THAT GO A LONG WAY: Our mini dehumidifiers may be small but they are powerful! The units absorb up to 6oz of water over 20-30 days before needing to renew the silica gel beads. 

SMALL, SLEEK, ECO-FRIENDLY DESIGN: Our portable, small dehumidifiers are made without toxic chemicals and are completely child and pet safe. Their sleek, renewable, eco-friendly design allows you to re-charge them anywhere. Their size is optimal for cars, closets, boats, cabinets, gun safes, and even gym bags! 

100% CORDLESS DEHUMIDIFIER: No cables or batteries required. Just plug in your dehumidifier into a power strip and watch the indicating silica beads dry up for re-use.

SATISFACTION GUARANTEED: Our dehumidifiers are of top quality, super durable, and extremely reliable. All Eva-Dry products come with an industry-leading, 5-year warranty guarantee so you can protect against moisture and mold.


This mini yet powerful dehumidifier is optimal for all of your small spaces up to 333 cubic feet.

Optimal Use:

The E-333 is optimal for all of your small rooms and spaces including closets, under sinks, cabinets, pantries, cars, boat cabins, bathrooms, and even gun safes! 

Design Technology:

Engineered with non-toxic crystallized silica gel technology, the Eva-Dry mini dehumidifier will quickly and efficiently absorb up to 4 to 6 oz of moisture from the air, without any leaks or spills.

Wireless & Eco-Friendly:

This renewable dehumidifier is 100% eco-friendly, making it safe for the environment! It requires no batteries or cords for use, and works for up to 10 years!

How The Mini Dehumidifier Works:

As the device absorbs the humidity, our moisture indicator beads will turn from orange to green, indicating that it’s time to renew the unit for 10-12 hours. Repeat the process for up to 10 years!

Our Eva-Dry Promise:

Protect your valuables and small spaces with our E-333s and enjoy dry, odorless, and healthy environments for up to 10 years! Contact our customer service if any issues arise with your product.

Other Uses:

  • Bathrooms/Laundry Rooms: Eva-Dry absorbs excess moisture from vapor-related activities, and helps dry fabrics faster. 
  • Bedrooms: While absorbing excess moisture you are also reducing dust activity, and consequently the risk of allergies. 
  • Basements: Protects stored clothing and tools from damage caused by excess moisture. 
  • Offices/Supply Closets: Protects electronic equipment, supplies, and paper from damage caused by excess moisture. 
  • Gym Lockers: Absorbs odors and dries wet gym clothes faster. 
  • Musical Instruments: Prevents damage caused by excess moisture. 
  • Gun Safes: Prevent rust to guns and expensive ammunition and other damage caused by excess moisture. 
  • Safety Deposit Boxes: Protect your valuables and documents from damage caused by excess moisture.

Related Mini Dehumidifier: The E-250

Weight 24 oz
Dimensions 6.25 × 1.25 × 4.75 in

Power Source


Usage in Motion

Suited for spaces up to



Product Demo


  1. mickie gold

    I use Eva-dry for my closets for over 20 years. Very happy to recommend the E333 renewable!
    I also use it under the kitchen and bathroom sink.
    Thank you.

  2. Denise Mathison

    I bought two, one for each of my lower level bedrooms that are 1/2 under ground. They worked great – lasted 3 years. About to order a few more.

  3. David Dick

    I put my E-333 model into use over two years ago in November of 2017, and I must say I’ve been pleased at how it keeps the air in my gun safe nice and dry. During the humid summer months I need to recharge the unit about once a month and is very easy to do. But in the less humid months of winter I need to recharge only every other month. This is a fine product for small places, such as a cabinet or safe, and I am very pleased with it. And in case it matters, my E-333 is of the older style, where the hook is shaped differently (an “open hook”) as well as being removable.

  4. Gwen Simshauser

    I originally found these at Costco 2 1/2 yrs ago. I bought two 2-packs calculating that was how many needed for the 10’x20′ cargo container I had my household stored in. The four units would last 4 weeks and would need to recharge. They worked much better than those messy crystals in the buckets that you had to pour down the toilet to get rid of. The Eva-Dry E-333 were reliable and so clean. Within the last year I upgraded to the E-500’s to give me more peace of mind that over last winter I wouldn’t have any mold and mildew issues. I also had something to swap out with during recharge periods. I recently was able to purchase a new home and move everything out of the container. Happy to say I did not have any mold or mildew issues, and the wood furniture was not warped or damaged. I am now going to use these in my garage and upstairs inside my home to make sure over the winter I don’t start anything nasty. These are a great product.

  5. Kelly O’Neil

    I use this dehumidifier in my gun safe and it works great. As others have said, it’s so easy to recharge, since you just plug it in for a few hours. It’s worth every penny I paid for it.

  6. Ronnie

    Product works good. No issues

  7. joseph strupek

    Works great have two in my gun safes and bought one for my grandson for his gun safe. Easy to recharge

  8. C. McIntyre

    I have 2-3 of these.

    They work great. I keep one in my gun safe and then one in a room that gets a little musty.

    I like how to recharge, you just plug them in for 8-12 hours. That is far easier to me than the metal cased units that you need to put in the oven.

    Overall, as my safe and gun selection increases, I’ll continue to add these. I’m strongly considering getting one of these for each of my ammo cans-if they made a half size model, I’d definitely have one in each ammo can.

  9. DCR

    Bought this for use inside a safe, so far so good.

  10. AuroraBorealis

    Keeps my car dry and fresh, which is very important living in the rainy Pacific Northwest. Refresh time is quick – all you need is an outlet. Filled up faster than I expected (became saturated a few weeks after putting it in my vehicle) but when it only takes a few hours to refresh that’s not such a big deal.

  11. Dan Cochran

    Works Very Well to help my Filament Dry in my container,, Over time it will even help Brittle PLA become more Dry over time.
    One Day I plan on a few more.

  12. Derfman

    So far so good. Bought this for a large gun safe I purchased to store guns, pictures, and other valuables. Working well so far! Basement is quite dry overall, and this is lasting a long time. Time will tell, but is working well so far.

  13. V

    so easy to have and use. recharging is relatively quick as well

  14. Amazon Scott

    I use this in my Sentry fire resistant safe that I use to store back-up hard drives. There are a lot of reviews for fireproof safes regarding moisture problems, so the mini dehumidifier fit the bill. All you do is plug in the unit for several hours until the beads change color – it heats up inside and dries out the beads. I have to plug this in about every 4-5 months to reset the unit so it will absorb humidity again.

  15. R.E.M.

    I have this a month or two and it seems to do what as advertised.

  16. Are Em

    Works great in our 3D printer

  17. Lindsay Pando-Bare

    So far so good, I did a grow with this before it needed to get recharged and yes it does get hot so do keep an eye on it.

  18. Natus

    Works great so far. Seemed to do its job because I had to recharge it in about a week.

  19. jggmc06

    Use them everywhere. Best way to save money plug and reuse

  20. Patrick Thompson

    This thing works great so far I’ve had it about 3 months now only had to recharge it once I keep it in my gun safe I do highly recommend this product for safes

  21. Amazon Customer

    Must have for gun safe. Works as advertised.

  22. Cameron Graham

    Keeping 52 gun gun safe at 36% humidity all winter Good bang for the buck

  23. Handyman

    I bought this for my gun safe. Seems to work very well. I really like the fact that it can be used over and over.

  24. Amazon Customer


  25. Madeline Audrey

    I use this little dehumidifier in my tiny bathroom. Even though I have a fan in the bathroom it still would get mildew spots from the steam. I’ve had this in the bathroom for a couple months now and I haven’t noticed any new mildew spots. I have to plug it in every week or two since there is so much moisture in the bathroom, but that is a very easy process. I love the size and ease of use!

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