Eva-Dry – E-500 : Dehumidifier Review post image

Eva-Dry – E-500 : Dehumidifier Review

Small is the new big! The Eva-dry E-500 Wireless Mini Dehumidifier is a compact humidity control system that is suitable for a wide range of applications. This lightweight unit is renewable and continues to run even when there is a power outage.

This energy-efficient unit is designed to consume minimum power and it is therefore a suitable choice for people who want to save money. Are you looking for a unit that can pull a lot of moisture from the air within a short time? This unit is incapable of pulling a lot of water within a short time and it is therefore unsuitable for large spaces.

If you have identified the E-500 as a suitable choice for your dehumidification needs and you are looking for details about its performance and features, then you are in the right place. We have thoroughly researched to provide you with reliable information that will enable you to make a firm decision on whether this is the right dehumidifier for your needs or not.

In addition, we have explored its strengths and weaknesses to help you get the real picture of this compact unit. To start with, we will explore its features.

Description of the E-500 by Eva-Dry

The Eva-dry E-500 is a renewable humidity control system that pulls water from the air to create an environment that is free from excess moisture. This unit is suitable for kitchens, closets, boats, safes, and automobiles to mention a few. Excess moisture can cause your possessions to rot and produce a bad odor. By pulling excess moisture, this unit prevents your valuables from rotting or corroding therefore helping to protect them and ensure that your room is dominated by fresh air.

This dehumidifier is designed to remove excess moisture without producing noise. In case you are looking for a unit that will not fill your room with horrible sounds, then this unit may be the right choice for you.

Unlike most dehumidifiers that employ a compressor for their operation, this unit utilizes silica gel technology to pull moisture from the air. This renewable technology allows the unit to run without requiring a source of power. The E-500 is suitable for spaces that are as large as 500 cubic feet.

What happens when the system reaches its capacity? This unit has a capacity of 6-8oz. When the maximum capacity is attained, the color of the indicator window changes from blue to pink. This window is made up of indicator crystals. Depending on the conditions of the space where this unit is positioned, it can run for four to eight weeks before it reaches its capacity.

To renew a unit that has attained its capacity, you only need to power it for around 10 to 12 hours. The renewing process should be carried out in a well ventilated place. The change from pink to blue is an indicator that the unit is ready for use.

Can it flood the floor when it has attained its capacity? This unit stores the captured moisture in its beads and cannot spill water on the floor. Unlike most humidity control systems, this unit does not require you to empty any reservoir. It can therefore run for many days without requiring your attention. According to the manufacturer, this unit is durable and can run for up to ten years. In addition, this dehumidifier has low maintenance needs.

Although this unit works well for small spaces such as safes, electrical compartments, cabins, galleys, et cetera, we have noted that it does not deliver impressive performance in open spaces. In case you are looking for a unit that you can use for capturing moisture in an open space, then you may need to consider another option. This unit works best in enclosed spaces. In addition, it pulls moisture at a very slow rate.

Technical Specs

Dehumidification capacity (in pints)-
Air Flow (CFM)-
Noise level-
Cord Length-
Power (in W)-
Digital Hygrostat-
Tank Size (in Pints)N
Timer ? Y/NN
Remote controlN
Dimensions8 x 2.5 x 5.5 inches
Weight1.8 pounds
Maker (model)Eva-dry (E-500)
Warranty5 year manufacture warranty


  • Low power needs. This unit has low power requirements. It only requires power when it is being renewed.
  • Silent operation. This unit does not feature a compressor and it therefore pulls moisture without producing any noise.
  • Very cheap. It is not going to achieve wonders, but is a good quick fix!


  • Unsuitable for open spaces. This unit is suitable for pulling moisture from enclosed spaces. It performs poorly in open spaces.
  • Pulls moisture at a slow rate. This unit does not pull a lot of moisture from the air in a week. It can take up to four weeks to dry a small space.

Users' feedback

Users quotes on Amazon.comI purchased this about a month ago for a beer keg refrigerator that kept collecting standing water on the bottom. I would use towels to soak up the half inch of water from the bottom of the fridge, but when I would open the fridge to check it again a week later, the water would always be back. Since I put this de-humidifier into the fridge a month ago, the fridge is still completely dry, and the beads have yet to change color at all, so I haven't yet had to "recharge" the dehumidifier. It's done just what I needed it to do. I'm very pleased with this purchase. ---UPDATE--- To my surprise, it was over 7 months before any moisture appeared in the bottom of the fridge again. I plugged in the Eva-Dry for about a day and a half (until I could see pink beads again), and put it right back in the fridge, which has been dry ever since (1 month and counting)."

Users quotes on Amazon.comI have 5 of these Eva-Dry rechargable dessicating dehumidifiers. Here in humid NC, using the larger in 4x8 closet works well. Takes some time, but definite measurable difference of 10-15% or so on humidity gauge after a couple of days. Need to recharge once a week here where even with the air conditioning on, indoor rel humidity is over 50% most days. The larger EDV-500 has a much better hook which fits through the holes in the Eva-Dry EDV-500 plug, a feature that is not very well documented! Also, there are occasional specials: recently a 2 for 1 sale on the EDV-500 with free shipping. Only reason for not giving this product a 5 star is that as stated in other posts, the recharge process gets the unit very hot and it doesn't always sit well in an outlet without support. I too had one unit fall, and was fortunate the case stayed intact but the little beads could make for a real mess if the unit broke open! But the real mess this thing avoids is dealing with drying chemicals that collect water and the dissolved dessicant. When that tips over, it is a wet mess, so the EDV-500 and EDV-300 avoid that type of mess. PS - where in the world did someone get the idea to label this "wireless" in the Amazon description? Very misleading!"

Conclusion: E-500 by Eva-Dry

In case you are looking for a suitable dehumidifier for your small space, then the E-500 may be a suitable solution. This unit runs silently and has low power needs therefore making it a suitable choice for people who want to save money.

Although this unit runs silently and can run for weeks without requiring user’s attention, we have noted that it is unsuitable for open spaces. In addition, we have observed that its rate of absorbing moisture is low. But who would complain for such a cheap price?

Our rating:


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