While it took nearly 80 hours of testing and help from our industry experts, we have finally sifted the competition down to only the best dehumidifier for everyone: the Keystone KSTAD50B Energy Star Dehumidifier. Out of the 43 units we’ve put it up against, only a couple managed to duke it out against this model, but more on that later. Size always matters when it comes to dehumidifiers because its efficacy in a room of a particular size is proportionate to the size of the unit itself, and our top pick makes sure that it will suck out moisture from every edge of up to 3000 square feet of space. Aside from its size, the KSTAD50B has other bells and whistles that any user would surely appreciate, but it may be a little too much for someone living in a small space like a downtown apartment.
For anyone with a bigger area to condition and deeper wallets, the Frigidaire FAD504DWD packs some good value, making it a good step up from our top pick for the best dehumidifier. It has Energy Star certification like our top pick and a 50-pint capacity, but does feature increased mobility and portability with handles at both sides, the top, and then has easy rolling casters that makes moving it around a breeze. However, it is bigger by 2 inches in every dimensions than the top pick, and it’s not the quietest dehumidifier out there.Our top and step-up picks were catered towards the largest demographic, like those who need a capable single unit for a relatively large area, but the Eva-dry Edv-1100 Electric Petite Dehumidifier fills a nice hole for those who need a tiny area dehumidified. It does away with noise-generating compressors and uses the Peltier effect created by its thermoelectric cooler. It collects up to 8 ounces per day as per the manufacturer’s spec sheet and while slow compared to the larger picks, it’s good enough for its size.
- Types of Dehumidifiers
- What Size Dehumidifier Do I Need
- How We Picked
Types of Dehumidifiers
In case there are any gray areas when it comes to your understanding of dehumidifiers, allow us to fill you in. An appliance can be called a dehumidifier if it draws out moisture from the surrounding clean air in order to control the level of humidity in a particular room. It can do this in a variety of ways, the most common of which is through refrigeration.
Other dehumidifiers operate using a silica-gel-based technology that are ideal for small spaces like closets, boat cabins, and large bags, while thermoelectric dehumidifiers use a Peltier heat pump that heat one surface and cools a surface on the other side which is where water vapor from the air condenses due to the temperature difference. Unlike mechanically driven dehumidifiers, thermoelectric varieties are much quieter but are limited to smaller designs because of their relatively poor Coefficient of Performance, that is, the bigger they get, the less efficient they are at cooling the condensing plate.
What Size Dehumidifier Do I Need
Large Capacity Dehumidifiers: These are typically models that can remove more than 75 pints of moisture per day. If you are living in a humid environment and in a large house, buy these. They will also run with lower noise levels than lower capacity dehumidifiers.Medium Capacity: 40 to 75 pints of moisture per day. If you live in a small to medium-sized apartment (up to 1500 sf), this would be sufficient.Small Capacity: Less than 40 pints. Best suited from removing dampness in a small room. Whole House Dehumidifiers: These are the most powerful, but also the most expensive. Get these if your living area is more than 3,000 sf and you are living in a relatively humid environment that tends to be prone to mold growth.
How Many Pints in a Gallon
Per industry convention, dehumidifiers are described based on the number of pints. This is a unit of measurement that can be confusing, as there are really three types of pints.US Wet Pint or Liquid Pint: One wet pint equals 0.125 Gallon (1/8 of a gallon) or 473 ml. This is the pint that is industry standard and what the product descriptions are referring to. The history of this is it was actually originally derived from the British wine gallon (hence the name ‘wet pint’), which measured 231 cubic inches. US Dry Pint: One dry pint equals 0.145 Gallon or 551 ml. This is not used commonly. It was also derived from the British – the corn gallon (hence the name ‘dry pint’), which measured 268.8 cubic inches.
UK Imperial Pint: One imperial pint equals 0.15 Gallon or 473 ml. The British in 1842 proposed a new measure of gallons – the imperial gallon – which measured 277.42 cubic inches. The UK hence moved to using this unit of measurement, but the US continued using the old measure – hence the disparity.For our purposes though, we just need to know that the pint measurement on dehumidifiers refers to the wet pint (0.125 Gallon or 473 ml).
Do You Even Need One?
While the question of whether or not a dehumidifier has a place in your home is up to you to answer, there are a few points of interest that are worth a look. Residents of coastal regions suffer high humidity, which consequently cause accelerated growth rates in mold and mildew compared to inland regions. So if you live close to the beach, you can expect to experience sticky hot days indoors in any season. A dehumidifier gives you a degree of control on the moisture in the air, well, at least inside of your home so you do not have to suffer stifling afternoons when lounging indoors.
Old houses, especially those mostly made of wood, are prone to rot and mold growth. You would typically notice the odors that come from a moist area in an aged home, which could even become a health hazard if left untreated. Putting a dehumidifier in the vicinity can improve the conditions of an old room, and it even removes the odor by drawing all that mold-causing moisture out of the air.
Even if you live away from coastal regions, all the evaporation that occurs during the summer can increase the humidity in your home. With this year being touted as one of the hottest years to date, you can expect a spike in humidity during the stuffier seasons.
Homeowners will want the safest conditions when it comes to their children, and that includes getting the best air quality they can for playrooms and nurseries. Dust mites thrive in humid conditions and while it is their droppings that cause respiratory problems, reducing their rate of reproduction through dehumidification is an ideal option for parents.
If you are the type to get sluggish, have swollen sinuses, or suffer brain fog when it gets particularly humid, having a dehumidifier at home or at work may just do you some good. For everyone else, getting one is all up to you–though, indubitably, there are many benefits of dehumidifiers even if you aren’t sensitive to humid conditions.
Big City Living
There is a good chance that you live in a downtown apartment if you’re based in a bustling metropolis, and that means tiny living quarters with less-than-ideal ventilation. That said, you can always live with the limitations of a studio apartment or those a bit larger, granted that you keep the risks associated with humidity in check. Apartments do not typically include a laundry area and a place for you to dry clothes you might wash, and the tiny size of apartment bathrooms can be paradise for mold spores looking to proliferate.While you can always leave the doors open and air the bathroom out, it may not be an option for people who can’t stand the odors from bathrooms creeping into the living area. This is a great scenario for a dehumidifier to step in–and you don’t even need a large one. One of our specialized picks, and even our budget pick is an ideal humidity solution for downtown apartment tenants. The smaller ones in particular can sit comfortably atop a bathroom cabinet or mirror, where they can collect moisture out of a small room fairly quickly.
How We Picked
Unlike with humidifiers, there are not that many categories to discuss when it comes to their counterparts. For the best dehumidifier roundup, we would typically look at models that provide great potential results in terms of portability, moisture collection, tank capacity, drain hose length (if applicable), energy consumption, and overall build quality.We also curated the best dehumidifier models on Amazon, Top Ten Reviews and ConsumerSearch for the ones with the most accolades awarded by consumers and managed to secure the best and brightest of the bunch.
One dehumidification process is found most anywhere that an air conditioner resides. Have you ever wondered why older window air conditioner units constantly have water dripping out their behinds? Some of that is water drawn from the air inside the room that is gathered by a condenser coil and drained outside. There is a good chance that you do not need a dehumidifier in a room that already has an air conditioner installed, but it is likely that you might need one where an AC unit is not practical; case in point: bathrooms.
There is also another process similar to that which air conditioners use, called mechanical/refrigerative dehumidification. A refrigerative dehumidifier uses a cold evaporator coil to condense water and collect it in the device’s tank which you then throw out when the tank is full. Its difference with standard AC units is that the evaporator and the condenser are placed in the same path where it routes air from the intakes. We included these models in our deliberations because while they are less effective in colder climates, they will inevitably be when summer rolls around.
Other units use a process that involves absorption through use of a desiccant material. Think of them as those little packets of desiccant you find in a box of fresh new shoes, only that they are for your entire bathroom (and elsewhere at home, for that matter). They work by drawing air into the unit, and then passing it through a desiccant layer, effectively absorbing the moisture. What is appealing about these units is the reusability of the desiccant beads. You can typically leave the layer to “recharge” through applying heat or leaving it out in the sun. They are also very quiet since they require little to no moving parts to work, work in lower temperatures and can achieve humidity levels below 35%. Absorption is also a common dehumidification process, so we included models that use it for its low cost and practicality.
All but the largest, clunkiest models were considered in this review, and while there were promising candidates in the larger-sized category, their prices do not come close to being worthwhile for the average homeowner. If you need a ballroom-sized area dehumidified, you are best left with purchasing those that augment your HVAC system anyway.
How We Tested
We tested all candidates for the best dehumidifier inside my 216-square-foot living room, which is typically classed as medium sized, with standard 8-foot ceilings. While the house was built in the early 2000’s, signs of aging walls and ceilings take hold around the rooms. The living room hasn’t yet developed any indications of water ingress, but humidity definitely spikes during particularly hot summer noons in Florida. Testing for each unit begins at exactly 12 noon, ending at 3pm for a total of 3 hours of moisture removal testing. Since dehumidifiers provide simple results, we came up with just three questions that would give us conclusive outcomes after the testing period.
1. Can you live with the noise output?Using a mini digital sound level meter, we recorded decibel readings while the units ran at their respective high settings every hour and averaged it out for each of the units. As a benchmark, 50 decibels is considered quiet, while the loudest tolerable level is around 70 decibels. Sound level measurements were done at the beginning and before the end of the testing period.
2. Moisture Removal Rate after eight hours in a room with one personWe inspected the appliances’ respective moisture collection features after the three-hour testing period to record each of their moisture collections rates. It’s a simple test that yields concrete evidence of each device’s performance level. While the water level test applied only to units that featured collection tanks, we determined the level of moisture collection in desiccant-based dehumidifiers using their respective indicator methods, such as color changes in the desiccant layer.With an average temperature of around 90 degrees F (32-34 degrees C) at noontime in the Floridian summers of 2015, my area provided a pretty realistic scenario (at least in the US) for these dehumidifiers to work in. Furthermore, no one was allowed into the living room during the testing period except me in order to provide the most consistent testing environment in terms of humidity level. One measurement would be taken every two hours during the test period. We would begin with a high Relative Humidity(RH) of 75 percent and then using a Honeywell HCM-350 humidifier when RH levels do not quite match the test conditions. We would also leave units running for 16 more hours for a total of 24 hours of testing.Desiccant-based dehumidifiers and smaller units aren’t well suited for use in a living room, so we reserved them for testing in a 45-square-foot bathroom with a shower. This provided a great high-moisture environment for small dehumidifiers to work their magic. Testing was also done during noontime at 90 percent RH to emulate real-world scenarios.
3. Accuracy of HygrometerUnits that featured display panels for humidity levels had their hygrometers tested against a Vicks Humidity Monitor, a top-rated hygrometer that bested 12 other units in a survey. Readings were done every half hour to determine accuracy the humidity indicators.
While maintenance is something you will be doing with a dehumidifier, there really isn’t a lot you can do to measure the convenience of maintaining a dehumidifier apart from my subjective observations. That said, we still included the ease of maintenance and user-friendliness of each unit in our deliberations.
We managed to sift through 43 dehumidifiers to end up with a handful of units that impressed us with concrete results, and the Keystone KSTAD50B Energy Star Dehumidifier remained one of the best performers for the price. Our pick managed to drop RH to a good 66 percent within a 2-hour period, and ended up with 55 percent after 8 hours. The unit could potentially hold RH levels of 45 percent if left on 24/7, a testimony by one of our staff members who owned the unit for a year. After 6 hours, we had to empty its condensate collector tank though after reaching the bottom RH level, the tank would fill up at a slower rate. The hose hook-up for constant drainage is also a nice touch if you intend to use this in a basement or garage, so you can leave it on for days.Speaking of leaving it on for long periods, the unit came with an auto defrost feature that automatically thaws any frost buildup in the compressor. This is a welcome feature that, while present in most refrigerative dehumidifiers, works as expected on this model.
Power consumption is always a concern, and we were happy to find that the unit sipped power during the whole day of testing. On the whole, the unit used a little over 12kW over a 24-hour period, clocking in at 520 watts per hour. You wouldn’t run a dehumidifier all day, every day for a month, so the cost to run this model wouldn’t even be noticeable in your monthly electric bill.
In terms of size, the 50-pint model is smaller and lighter than the 70-pint model, making it sit well in living rooms and even whole apartments. Being a little over 23 inches tall and about 11 inches wide the unit isn’t as portable as tinier models you can just place on a table, but the included casters help to make it glide smoothly along the living room.Our pick uses the traditional refrigerative/mechanical process of dehydrating air and despite its size and method of operation, it remained exceptionally quiet at 55 decibels all throughout our usage.
With microclimate control devices like these, you would have to do a little maintenance every once in a while. The KSTAD50B is no trouble to maintain, since the condensate bucket and the air intake filter are all you really have to clean out. The filter slides out from the top-front of the appliance, and is much like a window AC filter that you can clean out and reinstall into the unit. The bucket slides out easily, collects 2 gallons of water max, and the unit features a full-bucket alert that shuts off the unit to prevent spillage. The previously-mentioned hose system gives you options in terms of drainage (just press the Cont. button to enable the drainage mode), but it has a caveat that’s worth a little pondering.
For overall fit and finish, the KSTAD50B has a robust design that does not try to look like something more than it actually is. It’s a functional appliance that has easy-to-use functions fit for any medium to large area of the home. Don’t expect to be able to fit in your small apartment bathroom, though.
Flaws but not Deal breakers
Nothing is perfect, and the KSTAD50B definitely has its drawbacks. We mentioned a hose hook for continuous drainage. Well it doesn’t include a hose, which can be a problem for apartment dwellers who haven’t had the need for a hose in the first place. You can always score one from a hardware store, but do make sure you know your desired hose length beforehand.
It’s quite large, but that only means it’s going to work well in large living rooms and whole apartment units. It has no place in small bathrooms, but will likely fit in large bathrooms connected to master bedrooms in larger homes. The included casters are also a nice touch so you can just push it around.
The bucket also has a design that may be of concern to some. While you might think to set the bucket down on its bottom, it isn’t flat as you might expect. That said, you can always just pour the condensate out immediately after removal to prevent spillage and whatnot.
Lastly, the price may put off small apartment owners who don’t need this kind of dehydrating horsepower, but for the base price, the benefits you get over years of usage will be worth the extra bucks. If you only need a small bathroom dehumidified, check out some of our other picks; you might just find the right one for you.
Second (and Third, and Fourth) Opinions
Reviewers who have been owners of dehumidifiers for many years (having bought the KSTAD50B to replace their 8-year old units) and lauded it for being quiet and exceptionally energy efficient.
The 70-pint model was reviewed on TopTenReviews, receiving the Gold Award. We used the smaller 50-pint model and after testing, their claim of having to empty the condensate reservoir more often than other models were true enough.While the 70-pint model only achieved the second-best rank in ConsumerSearch, it was only bested by our Step-Up pick, the Frigidaire FAD504DWD. Even though the site only put it in second place, they still state that it is still one of the best when price-performance ratio is the priority.
All in all, buyer reviews and site rankings only led us to a conclusive answer cemented by hours of testing and data recording done on our side.
We alluded to the Frigidaire FAD504DWD a while ago as one of the top-performing home dehumidifiers, and it’s not bold by any stretch if price is no concern. You get higher performance achieved by its slightly increased power draw compared to our pick, though that isn’t saying much when talking about dehumidifiers.Noise tests yielded quiet sound levels of 54 decibels at the end of the test period, making it slightly quieter than our pick. There was a gnawing vibration coming from the water bucket, which was caused by the container being just a bit too light without water inside it. We found that the same was true with our unit, but found out that this was normal for the unit. The solution was simple: just tie a bungee cord or similar rope material to keep it tightly inside the slot. This rendered the vibration a non-issue, since you can just move the rope a couple of inches up whenever you needed to empty the bucket.
On the topic of noise levels, the fan on the unit may continue to run despite already reaching the set humidity level. Frigidaire’s reason for this is to keep the humidity level even in a large area, which makes sense. The fan will also shut off when the machine is satisfied that the whole area’s RH is sufficiently controlled. It also doesn’t make much noise, and power consumption is too low to be concerned with.
After running it for five hours, we had to dump the water bucket. This was in a controlled environment with 75 percent RH to work with. Like our pick, it began to fill slower as the target RH was within reach. It also has an outlet into which you can screw a garden hose coupling, though it did not come with the hose, similar to the Keystone KSTAD50B.
The step-up pick features electronic controls that display the target RH level, complete with fan speed control, a filter reset button, timer, power button, and humidity control buttons. After the test period, our hygrometer matched the 45 percent RH level we set on the unit. While to be expected for a medium-sized dehumidifier at this price range, it’s more than we can say about other models that would take over a day and a half (by our calculations) to reach the set RH level.
The unit comes with plastic casters that come standard with things like office chairs. They are removable so if you have a permanent home for this machine, you can just plop it on there.
As mentioned, there is a hose hook-up at the rear of the machine. The caveat here is that for the drain to work smoothly, you must make sure that the drainage is at a lower elevation relative to the machine’s drain hole. If the drainage sits higher than the drain outlet on the machine, it may spill water on to the floor.
On the whole, the Frigidaire FAD504DWD offers more moisture draw from larger power requirements, while efficiently using that extra power. If you want a workaround for the constant fan cycling, you can try adding an outlet timer so you can tightly control when the fan turns on. It isn’t perfect, which isn’t saying a lot when describing home appliances, but the pros definitely outweigh the cons.
Our top and step-up picks were catered towards the largest demographic, like those who need a capable single unit for a relatively large area, but the Eva-dry Edv-1100 Electric Petite Dehumidifier fills a nice hole for those who need a tiny area dehumidified. It does away with noise-generating compressors and uses the Peltier effect created by its thermoelectric cooler. It collects up to 8 ounces per day as per the manufacturer’s spec sheet and while slow compared to the larger picks, it’s good enough for its size.
Noise testing yielded almost zero noise, since the machine does not use any moving elements apart from a small DC brushless fan. It relies on a thermoelectric cooler that has a ceramic plate sandwiched between one heated side with a heat sink, and another, much cooler side. The cool side catches moisture from the air drawn in by the fan, which then drips down into the small condensate tank.
It’s an ingenious principle, but does it work well? For small areas that you don’t spend too much time in, yes. But it is less efficient in areas larger than a small bathroom or large closet. You can probably use it in a small nursery.In a small 45 square-foot bathroom, the unit managed to extract just shy of the 8-ounce measurement on the spec sheet. After a day of use, the RH level dropped from 90 percent to 82 percent in the small bathroom test. While it may seem inefficient, for the price, size, and almost zero noise production, it works well for where it’s designed to be. That said, it’s not a miracle product by any stretch. Some of our staff actually owned one of these units and reported that after a year of constant use, the fan gave out. It may be easy to just throw the unit away, replacing the fan is not that hard.
As seemingly complex as its operating principle may be, the control scheme on this small dehumidifier is comparatively barren. Humidity controls are completely absent, and apart from an on switch and a couple of status indicators, there is not much else to do on the device. This is by no means a con, since it’s convenient to just turn it on and leave it running on your bathroom counter anyway. One caveat is that the machine has an internal setting that will stop it from working when the RH level is between 40 and 50 percent, which is the average level that is comfortable. This is a deliberate limitation by the manufactures to help the machine remain simple but still functional since most people will have the setting at those levels regardless of whether it has a tunable humidity level setting or not.
The overall finish of the Edv-1100 features a glossy plastic construction and a semi-transparent purple condensate whose color is similar to watered-down grape juice. The funnel sits on top of the bucket, which allows the collected moisture to slide right down into the container. With its relatively simple design and small size, our budget pick can hit the right spot for RV owners, studio apartment dwellers, nurseries, or those will medium to large bathrooms or walk-in closets.
Best Small Dehumidifier
While we discussed some of the units that might catch the eye of the usual homeowner, the Eva-Dry E-333 Renewable Wireless Dehumidifer may be worth a gander. It’s a small dehumidifier effective in areas up to 333 cubic feet, and uses desiccant to draw moisture from the air. That said, it’s ideal in small, confined spaces like safes, small closets, large sports bags, and the like. It’s main selling point is the renewable nature of its dehumidifying element. While the manufacturer says you “recharge” the unit, you don’t recharge anything so much as you’re drying out the desiccant using electricity.
Working like a big bag of desiccant beads, the E-333 did not do well in the bathroom test but the beads did turn pink (indicating the beads are wet) after the test period, and our hygrometer read a 5 percent RH level reduction of 85 from the starting 90 percent. It’s not mind-blowing performance, but considering that the test area is well above the stated optimal size, we can conclude that this will do well in smaller enclosed areas where a regular dehumidifier is simply too big, and bags of desiccant beads are too small. Compared to the DampRid FG83LV hanging dehumidifiers, which are disposable and each lasting up to 60 days only, the renewable aspect of the Eva-dry E-333 is certainly more attractive despite being twice the price as its disposable competitor.
Best Dehumidifier for Garages
Lastly, there is the special mention that goes to the the Frigidaire FAD301NWD Energy Star 30-Pint Dehumidifier. It’s smaller than our top and step-up picks, has mechanical controls, but has Energy Star certification and rolls around like the more expensive models. Our tests concluded that the unit is more suited toward garages and similarly-sized area like workshops or very large bathrooms.This unit gets very loud, clocking in at 59 decibels, something many homeowners cannot tolerate. The noise it generates is one of the main things that made us set this aside as something you would use in an already noisy environment like a shop or garage.
Humidity levels after 8 hours dropped from 75 to 65 percent in the living room test, which is good considering its price and size. Running it after a day yielded an RH level of 43 according to our hygrometer. With a lower resulting RH level, it’s a perfect candidate for the top pick position. It’s just that it made a racket that was barely tolerable to a point where we concluded that considerate apartment dwellers will not want to be the cause of the racket their neighbors are suffering.Apart from that, many of the features found in more expensive units are here. Hose outlet (sans hose), removable 30-pint bucket, plastic caster wheels, continuous function, and a vent that blows warm air out the top. Controlling the unit is a simple affair: just turn the knob to the desired humidity level and leave it there. You get next to no accuracy when setting it though, since the increments of the dial are akin to those you find on a car thermostat. It would have been ideal to have detailed markers instead of just bars. The lowest setting is 35 percent, according to Frigidaire, and if you turn the knob up all the way the machine will go into continuous drain mode.
With all the cons we found, our overall findings still amount to a recommendation as long as you use it in an environment where the racket it produces doesn’t really matter.
One of the units that nearly made the cut to be an official pick for the best dehumidifier is the Friedrich D70BP 70 Pint Dehumidifier, which had many of the features in our top and second picks. It even had its own trump card: a built-in water pump that would direct water 15 feet in any direction. Its flaws are few but off-putting, beginning with all the vibrations coming from the different parts of the machine. They are so strong that the bucket begins to rattle when empty and, while the pump is very good, it is louder than the fans and rattling combined. The unit also uses the strongest fan setting every time you turn it on, and will not remember previous strength level settings. Price is also a concern. With all these cons, it’s hard to recommend a product at that price range unless you can overlook all the cons listed.
The NewAir AD-250 25 Pint Portable Dehumidifier was also one contender, with its great portable design and efficiency. Its price is one of its major downfalls along with the lack of humidity level control (it only had an on and off switch), so it was generally up to you to judge whether to turn it off or leave it on. It produces too much noise that becomes unbearable after prolonged exposure, too. With a hefty starting price tag, though, you’d be hard pressed to give it a look if you see it next to other units in the same price range at the home appliance aisle.
It’s striking design made us take a look at the DeLonghi DD70PE Dehumidifier, but upon close inspection and extensive usage testing, we proved the truth behind the saying “Looks can be deceiving”. While it features great LCD controls, easy setup, and great dehumidifying power, the drawbacks made us set it aside and wait for another iteration. It’s noisy, cycles too frequently (which exacerbates the noise issue), and forgets previous settings, just to name a few issues. The price is also a little too much for what you get.
One up-and-coming model for the best dehumidifier is the Comfort Aire BHD701H Dehumidifier, with a 70-pint capacity and a robust design similar to our top pick. It features auto-restart, auto shut-off, and a bucket-and-drain combo common in other units in its category. We decided against it being an official pick solely since it outputs so much heat that it becomes uncomfortable during noon-time testing. It is also fairly noisy, just like the DeLonghi DD70PE.
The EdgeStar DEP501EW looked to feature high portability in a medium-sized form factor: a characteristic that would definitely have given it an edge. However, the unit had a few drawbacks that bumped it down our list. One concern is that there is no drainage system apart from the bucket, which meant that what’s supposed to be an advantage actually shoots it in the leg for customers who want something a bit more flexible. It’s ironic, but the reality is that not everyone has the time or consistency to keep removing the bucket, especially when you place it somewhere out of the way like a basement. It’s reasonably priced.
Wrapping it up
Humidity, when unchecked, destroys properties and ruins your health. If your region forces you into situations where you need to control RH levels, our picks can help keep your home bone dry when you need it to be. So, verdict for the Best Dehumidifier? When looking for a great dehumidifier with the top price-performance ratio so far, the Keystone KSTAD50B is a good candidate with a robust design to boot. If you can fork out a little bit more for a little performance increase, the Frigidaire FAD504DWD should not disappoint. Only need to keep your bathroom or large closet dry? The petite but effective Eva Dry Edv-1100 can cover the bases, but if you need just your gym bag dried up the Eva Dry E-333 while not the best dehumidifier can keep the moisture away pretty well.