Eva-Dry E-333 Renewable Mini Dehumidifier

Last updated date: June 14, 2021

DWYM Score

8.8

Eva-Dry E-333 Renewable Mini Dehumidifier

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We looked at the top Dehumidifiers and dug through the reviews from some of the most popular review sites. Through this analysis, we've determined the best Dehumidifier you should buy.

Update as June 14, 2021:
Checkout The Best Dehumidifier for a detailed review of all the top dehumidifiers.

Overall Take

Unique in its design and operation, this dehumidifier is best for small spaces like pantries and closets. It uses moisture beads to collect water from the atmosphere, and you'll only need to recharge those beads when they've gathered all the moisture they can hold.


In our analysis of 27 expert reviews, the Eva-dry E-333 Renewable Mini Dehumidifier placed 3rd when we looked at the top 10 products in the category. For the full ranking, see below.

From The Manufacturer

This mini dehumidifier has been design to adsorb moisture from small enclosed areas (maximum area: 10'x 10'). It will help protect clothes and valuables from the damaging effects of mold/mildew and moisture rot. It is 100% renewable and needs no power to operate. Just hang the eva-dry unit in a closet, or you can place it in other small enclosed spaces, and it will start to adsorb moisture. There are no batteries required or cords to plug in, the unit works without power. There is an indicator window with special "moisture meter crystals" that change from orange (when dry) to green (when wet) to indicate when the unit needs to be "renewed". The unit will adsorb approximately 8 to 10 ounces of moisture (depending on humidity levels this should take between 3 - 8 weeks). Once the moisture has been adsorbed it cannot leak or spill. This unit uses a specialized engineered crystallized silica gel that is odorless, non-toxic and completely safe. When the indicator crystals turn Green it is time to "re-new" the unit. Simply remove the unit from where it is adsorbing moisture and plug it into a power outlet.

Expert Reviews

Expert Summarized Score

8.0
3 expert reviews

User Summarized Score

8.2
3,131 user reviews

What experts liked

Of the three smaller models we tested, the Eva-Dry E-500 removed the most moisture from the air, reducing the relative humidity by about 19% in about 1 hour and 40 minutes. The E-500 is especially portable because it doesn't require power to operate; it uses desiccant silica beads (like those silica packets that sometimes come with things you've just bought) that passively absorb moisture.
- Reviewed
The smallest and cheapest unit on our list, this Eva-Dry unit is also our only desiccant pick – one that uses a special material to absorb water rather than secrete it into a container.
- Digital Trends
Reviewers say the Eva-Dry Electric Petite Dehumidifier does an admirable job reducing humidity in laundry rooms, bathrooms, and even RVs.
- The Spruce

What experts didn't like

Unlike entirely non-electric dehumidifiers, the Eva-Dry does use electricity sometimes.
- Reviewed
Of course, that means that this unit only works for very small spaces, but that may be exactly what you need. The unit is ideal for closets, pantries, and other tiny areas you want to keep as dry as possible. Note that you do have to plug the model in occasionally to help dry out the absorbing crystals.
- Digital Trends
At its low price, the Eva-Dry doesn’t boast a lot of extra features.
- The Spruce

Our Expert Consultant

Vicki Liston 
Home Improvement Expert

Vicki Liston writes, produces, and narrates “On The Fly…DIY,” an award-winning home improvement and DIY show of unique project tutorials for the casual DIY’er.

Home improvement and all things DIY have been Liston’s passion since she bought her first house in 2007 and she started making video blogs in 2014. She’s performed hundreds of DIY projects, from small ones to major, wall-smashing renovations and can teach you how to make a trendy DIY barn door for cheap. The proceeds earned from “On The Fly…DIY” are donated to no-kill animal shelters and rescue organizations. You can find her show on Prime Video.

An Overview On Dehumidifiers

Humidity can cause serious problems, especially in poorly insulated rooms like basements. Over time, moisture can cause mold to build up, potentially affecting the health of you and your family. It can also cause wood to swell or deform, possibly impacting the entire structure of your house. The right dehumidifier can pull the moisture from even large spaces, with the water filtering directly into a drain.

Our resident home improvement expert Vicki Liston recommends starting off your dehumidifier journey by measuring the humidity in the air with a hygrometer.

“Anything over 50% and you’ll want to dehumidify,” she says. “Between 50-60% is considered ‘slightly damp,’ 60-70% is ‘moderate,’ 70-85% is ‘very damp,’ and 85-100% is considered a ‘wet’ environment.”

Mold can develop in high-moisture areas if that moisture is left unchecked.

Once you’re in the market for a dehumidifier, you have some criteria to think about. Room size is one of the most important factors when you’re buying a dehumidifier.

“Most models will specify the ideal environment for their units to operate within based on your humidity level and square footage measurements,” says Liston. “There’s a spectrum of possibilities, too — a 1,000-square-foot space with moderate humidity is going to require a different sized dehumidifier than a 500-square-foot area with very high humidity.”

You’ll need a way to hook your dehumidifier up to a drain so that you won’t have to empty it every day or so. If you’re concerned about moisture in a small area like a pantry or closet, the Eva-Dry is an innovative concept that uses moisture beads to soak up the moisture. Its small size also means it won’t take up too much space.

You should also consider noise level, especially if your dehumidifier is in a space of the home where people spend time. You won’t want your dehumidifier to interfere with nightly TV watching or your quiet reading time. Dehumidifiers have varying noise levels that should be part of your buying decision.

Lastly, consider your monthly utility bills in your choice. An Energy Star-rated dehumidifier will save you money in the long run, while also keeping your home environmentally friendly. You’ll get the same efficiency with a fraction of the energy use.

The Dehumidifier Buying Guide

  • The top concern for any dehumidifier purchase is effectiveness. Some models do best in medium-size rooms, dropping humidity from 65 to 70% down to between 45 and 50%. This level is low enough to keep mold at bay while still being comfortable. Best of all, these models tend to hold that level consistently throughout the day. Other dehumidifiers are efficient in larger rooms, controlling humidity in areas up to 2,000 feet. Meanwhile, the Eva-Dry only works well in small spaces like closets and pantries, where it reduces relative humidity by 19% in less than a couple of hours.
  • When it comes to capacity, it looks like 70 pints is the gold standard in dehumidifiers. Most major appliance brands boast a capacity of 70 pints. The Eva-Dry is different from the others in that it uses desiccant silica beads to absorb the moisture. Simply wait for the crystals to turn green and plug the unit in for eight to ten hours in a well-ventilated area. At that point, you can reinsert the crystals and start soaking up humidity again.
  • If you want to add a new dehumidifier without seeing your electricity bill increase, go with a model that has an Energy Star-rated. The Eva-Dry is also worth considering if you’re concerned about moisture in small areas of your house since it only needs to use power while the moisture beads are renewing.
  • Setting up and using your dehumidifier will require some work, regardless of the model. However, some dehumidifiers feature large buttons and legible text that make them easier than average. The text is typically easy to see in dim lighting. Best of all, many of these models have a timer so that you can set a schedule for your dehumidifier to run.
  • As your dehumidifier pulls moisture from the room, it gathers into a bucket that will need to be emptied. With certain models, you can set the unit up near a drain to allow it to dispose of water on its own. Without this, you would have to empty the bucket every 12 to 24 hours.
  • Unless your dehumidifier is in an unused basement or closet, chances are noise level is an important factor. Look for a model that is listed as running quietly.
  • When it comes to cost, you can’t beat the price on the Eva-Dry. Since the Eva-Dry only works well in small spaces, though, you may need to choose between the others, which all fall in a slightly higher price range.