- Updated April 16, 2019
- Posted by: Shannon Ward
Mold and mildew are the worst “guests” that can make an appearance in your home, high humidity being the growing ground that favors their appearance. If you have a crawl space, know that it most likely harbors mold and mildew because this environment is characterized by dangerous levels of humidity. Worst of all, even insects and termites might be attracted by the conditions in the crawlway, so it is imperious for you to handle lowering humidity levels before it is too late.
Top 12 Crawlspace Dehumidifiers Comparison
1. Thermastor Santa Fe Compact 2
As its footprint is very small, you can confidently install it in the tightest crawlspace without a problem – it measures 12 inches in width, 12 inches in height, and 21 inches in depth. It might come at an exorbitant price, but the upfront investment is worth making when you take into consideration its high humidity removal capability and the fact that it doesn’t actually consume a lot of energy when it runs. Due to the fact that it features an integrated pump, it expels the collected water immediately, its operation being highly convenient due to this aspect. It can operate in environments where the temperature ranges from 40 degrees Fahrenheit to 95 degrees Fahrenheit, low temperatures not affecting its internal components. Furthermore, the manufacturing company backs it with a 5-year warranty on parts, labor, and the sealed system.
High humidity will surely be an issue of the past from the point you start using it on as it is able to remove as much as 70 pints of moisture per day. Furthermore, it delivers a generous area coverage of up to 1600 square feet, thus being ideal for large spaces where moisture is too high, the danger of mold or mildew appearing being imminent. Furthermore, as it can even operate in low-temperature conditions, you won’t notice any performance drops regardless of how the environmental conditions shift.
As it comes with an 8-foot drain hose which allows continuous draining, convenience is a given with this dehumidifier as you don’t have to empty any bucket or perform other time-consuming routine maintenance tasks. It produces a mere 63 decibels when it runs, so you can breathe easy knowing that it won’t present a nuisance even if you are in its proximity. The manual controls are quite intuitive, meaning that you won’t have any difficulties figuring out how to operate it and change settings to your liking.
Mention Worthy Features and Specs
- You can turn off the dehumidifier mode and use it as an air circulation device when needed.
- Automatically restarts with the settings you have selected when a power outage occurs.
- Features a washable pre-filter and a MERV-8 filter which tend to eliminate dust, making the air indoors safer to inhale.
- Features a 9-foot power cord that eliminates the need for any extension cords.
- Boasts a durable powder coated stainless steel housing construction.
In terms of energy efficiency, this is one of the more forgiving selections on the market when it comes to your wallet, boasting a high water removal efficiency of 5 pints per kWh. As it delivers an energy factor of 2.4 liters per kWh, it has even received the Energy Star certification that makes it one of the few products in its niche to be recognized for its low power consumption. Thus, while you might be required to spend a hefty sum of money upfront, as time passes you will make up for your losses due to its efficiency when operating.
What We Like
- Integrated vertical/horizontal exhaust outlets
- Automatic restart after power outage
- Ducting options for divided spaces
- Energy Star certified
As it can perfectly withstand operating in low temperatures of 40 degrees Fahrenheit, it is one of the most reliable devices. Easy to install and use, and coming at a reasonable price considering its capabilities, this is our top recommendation to anyone in need.
2. Dri-Eaz F413 Revolution
Ideal for placement in small spaces due to its design, the F413 is one of our top recommendations to those who want to make sure that mold and mildew won’t ever be an issue in the building they live in. it might come at an expensive price, but this isn’t an issue considering the large area coverage it provides and the hefty humidity removal efficiency it boasts. As it is built with durability in mind, you are sure to use it for years to come without having to worry about repairs or replacements. Additionally, it comes with all the standard features for a product in its niche, like automatic restart and automatic moisture level upkeep.
Due to the fact that it measures only 12.5 inches by 21.5 inches by 12.5 inches, you can rest assured knowing that it will fit in the tightest of spaces. Add to this design aspect the fact that it weighs only 61 pounds, and you have an easily transportable device at your disposal. But this isn’t what impresses the most, but rather the rotomolded polyethylene construction of the housing that ensures outstanding durability in case it gets kicked or knocked over.
As it is able to provide a constant and reliable operation is spaces of up to 7000 square feet, the sky is the limit to how and where you can use it. The F413 is able to remove up to 17 gallons of moisture per day, so you can rapidly say goodbye to any issues you might have been confronted with. Even better, due to the fact that it features a built-in automatic pump, you need not tend to empty any reservoirs or other annoying maintenance tasks as the moisture is released into the drain of your choice immediately as it is picked up.
Mention Worthy Features and Specs
- Delivers real-time temperature and relative humidity display so that you may track conditions.
- In the event of a power outage, it will automatically restart when the power comes back on.
- Features a filter that prevents dust and impurities from damaging internal parts, while ensuring cleaner air for you to breathe.
- In order to make maintenance work and cleaning easy, it provides fast access to internal parts.
Finally, we look at the warranty that accompanies this product as it is a good indicator of its overall quality. The manufacturing company provides an impressive lifetime warranty for the housing, which shows that it knows there isn’t anything that can happen to the outer shell of the device as it is made with a quality material – polyethylene. For the compressor and coils, a 6-year warranty is provided, which vastly exceeds industry standards. Lastly, there’s a 1-year warranty granted for parts and labor so that you are covered regardless of the situation that emerges.
What We Like
- Superior low-grain performance
- Compact design makes it a perfect fit for the crawlway
- Stackable and easy to transport
- Durable and rugged rotomolded housing
If a wide area coverage is what you need, then this Dri-Eaz entry is the right choice to go with as it can handle removing excess moisture in areas of up to 7000 square feet. Furthermore, as it eliminates up to 80 pints of moisture per day, it is sure to reduce humidity at a healthy level in no time.
3. AlorAir Storm LGR Extreme 190PPD
Boasting a heavy-duty waterproof design and able to cover areas of up to 2300 square feet so that it handles the large space underneath your home, the Storm Extreme is a rather reasonably-priced entry that promises to remove 190 pints per day in conditions of extreme dampness. It features the Hot Gas defrosting system which ensures ice won’t build up on the coils even in extreme weather conditions where temperatures go as low as 2 degrees Celsius. It features a 20-foot drain pipe to automatically expel the moisture it collects for a convenient operation. For it to function without danger of damage, the temperature must span from 33.8 to 104 degrees Fahrenheit, while the humidity should range from 35 to 95%. It produces less than 58 decibels when it runs, so you won’t hear it from inside your home. It even features a washable G3 filter that prevents airborne particles from congesting the interior components so that maximum airflow supply is granted. All these details alongside the 1-year warranty on parts and labor, and the 5-year warranty for the compressor, evaporator, and condenser make it an option worth taking into consideration.
What We Like
- Washable G3 filter prevents airborne particles from congesting the interior components of the system
- 20-foot long drain pipe provides a convenient manner to dispose of the collected moisture
- Can operate in harsh conditions due to its heavy-duty, waterproof build
- Backed by a 1-year warranty on parts and labor, and a 5-year warranty for some of the sealed system’s components
One of the more accessible entries price-wise, the Storm LGR Extreme is suitable for crawlways up to 2300 square feet in size, the 190 pints per day maximum moisture removing capability recommending it even for the harshest conditions possible.
4. AlorAir Sentinel HDi90
This model is specifically designed for crawlways and basements measuring 2,600 sq. ft. and it is powerful enough to collect 90 pints of water in 24 hours. It boasts an air flow rating of 310 CFM – 530 CFM. It comes with ducting options for divided spaces, a fact that increases its versatility and functionality. The Hot Gas defrosting system that it features ensures a quick and efficient clearing of the ice from the coil when there are low operating temperatures. It has a power consumption of only 5.5 amps per day. In addition, the epoxy-coated coils provide protection in corrosive environments, maintaining the heat transfer ability of the coil over its entire lifespan. Among its most important features, we must mention the humidistat and the timer that allow you to customize its operation. You must also know that it comes with a water full protection that prevents water spillage.
What We Like
- Condensate pump draining
- Quick access to pump and main board
- Sound pressure level 55 dB(A)
- Energy Star certified
What We Dislike
- On the expensive side
- Some customers complained that reaching customer service and receiving the needed help was quite bothersome
If you have really high humidity issues, this is the right device as it can remove up to 90 pints of moisture per day. Best of all, it can withstand operating in temperatures as low as 33 degrees Fahrenheit, so you can confidently rely on it regardless of how harsh the environment is where you intend to place it.
5. Aprilaire 1820
The 1820 model is able to remove up to 70 pints of moisture from the air per day, but there are two other options which can suit greater needs, both products being manufactured by Aprilaire, one of the products being able to eliminate up to 95 pints of moisture, while the other one removes up to 130 pints. However, do note that they come at higher prices. The Aprilaire 1820 makes an appearance in our top not only due to its high efficiency in terms of humidity control but due to the fact that it is easy to use and quite feature-rich. It allows you to set the humidity level to be reached, and when moisture exceeds that precise level, it automatically starts functioning to keep the situation under control. It features an interactive display that makes it quite user-friendly. It is almost maintenance-free as you will only be required to tend to filter cleaning or replacement once per year. Furthermore, the manufacturing company backs it for 5 years.
What We Like
- User-friendly interface granted by the interactive display it features
- Compact design makes it a perfect fit wherever you want to place it
- Almost maintenance-free – you are only required to clean or replace the filter once per year
- There are other two dehumidification capacity size options to choose between
What We Dislike
- One of the more expensive entries on the market
- Can get a bit noisy
A hassle-free dehumidifier that will make all of your worries regarding the potential appearance of mold disappear by maintaining a healthy humidity level of your choice, the Aprilaire is one of the best selections you could go for. Sure, it might come at a bit of an expensive price, but seeing the performance it delivers, it’s safe to say that it is worth every cent.
6. Dri-Eaz F515 PHD 200
There are countless aspects to praise when it comes to this dehumidifying device, and we will start off with its compact size. It measures only 17.6 inches in height, 22 inches in length, and 12.5 inches in width, and it weighs a mere 65 pounds, so placing it in the hard to reach space is not a big issue. It can operate without problems as long as the temperature does not run lower than 45 degrees Fahrenheit, or higher than 100 degrees Fahrenheit. The mesh air filter it features ensures that not only will humidity drop to healthy areas, but that harmful contaminants will be removed from the air as well. It produces a maximum of 60 decibels when it runs, so it is unlikely for its operation to ever bother you. furthermore, it is Energy Star rated for its low energy consumption during use.
What We Like
- Mesh air filter ensures that even the impurities lurking in the air will be handled and removed by the dehumidification device
- When operating, it produces less than 60 decibels
- 180 maximum cubic feet per minute rating
- Energy Star certification proves this is a low energy consumption product
What We Dislike
- On the expensive side – not the most affordable selection to go for
- Some customers reported leaks after a period of use
It might not be the most attractive selection when it comes to pricing, but this Dri-Eaz product is still worth taking a second glance at as it delivers exactly what it promises – that it will lower humidity levels considerably, making the space you live or work in a truly healthy and safe environment to be in.
7. BaseAire AirWerx55
Despite its quite compact size, the BaseAire AirWerx55 is able to remove a hefty amount of moisture from the air. Per day, depending on the environmental conditions – temperature and humidity – it can draw anywhere from 55 to 125 pints of moisture. As it can cover areas of up to 1300 square feet, you needn’t worry it might not handle the space you place it in. It is Energy Star listed to 2.47 L/kWh, so energy efficiency is granted with it. It measures 19.2 inches in length, 12.2 inches in height, and 13.3 inches in width, so fitting it in the tightest of crawlways won’t be an issue.
Due to the fact that it produces less than 45 decibels when it runs, you won’t hear it from inside the house, so it won’t present a distraction. It produces a hefty 130 CFM when it runs, the optimum humidity range it can handle spans from 30 to 95%, while the optimum temperature range spans from 1 degree Celsius to 40 degrees Celsius. Even though it doesn’t feature a built-in pump, it allows continuous gravity draining due to the 6.5-foot long drain pipe it comes with, so there is no work required on your part to remove the moisture it collects.
The epoxy powder coating on the coils helps prevent the Freon from leaking to extend the product’s lifespan and preserve the heat transferability of the coils. It features a touch control panel that makes it easy to track conditions and the drying process, and that provides humidistat settings to allow you to set the humidity level you desire to reach and maintain. In terms of backing, the manufacturer has it covered on parts and labor for 5 years after you make the purchase, so you won’t find yourself spending money on repairs anytime soon.
What We Like
- Digital display shows temperature and humidity to let you track environmental conditions and the efficiency of the drying process
- 2.4 L/kWh rating ensures energy efficiency is one of its strong points
- Backed by a 5-year warranty on parts and labor
- Generous 130 CFM airflow
One of the more reasonably priced entries on this market, the AirWerx55 is perfect for the tight and damp space underneath your home as it boasts a compact design and it is able to remove anywhere from 55 to 125 pints of moisture per day.
8. Ebac CD30E
Quiet and energy efficient, the CD30E was bound to rank high in our top as it not only boasts one of the most well thought out designs but because it does a more than an impressive job when it comes to lowering humidity in this obscure space. Furthermore, the asking price is reasonable considering what it offers, so there are quite a few benefits to acquiring it.
It measures 12 inches in height, 14 inches in width, and 22 inches in depth, which makes it perfect to fit in tight spaces. As it weighs a mere 55 pounds, the installation process won’t be much of a hassle either as maneuvering it isn’t all that difficult. The sturdy carrying handles allow you to move it around with ease when you need to. Another appealing design trait is the fact that it boasts a durable heavy-gauge steel housing which is epoxy-coated, so it is bound to pass the test of time.
Performance-wise, there’s nothing bad that we can say about it as it is able to remove a staggering 17 pints of moisture per day in environments where humidity levels are at 80%. As it features a built-in pump, the water collected drains freely out of it, so there’s no need to worry about this aspect as long as you direct it to go down a drain or outside. It’s convenient to run, all it needs from you being to set the adjustable humidistat as you please and let it operate according to your pick. In sensitive scenarios where humidity raises above your selected setting dangerously, the alarm goes off so that you know to manually adjust its operation and remedy the situation.
Mention Worthy Details
- Rubber feet keep it a little above the ground.
- Carrying handle for easy moving if and when needed.
- High airflow of up to 170 cubic feet per minute.
- Reasonable maximum noise output of 47 decibels.
- Comes with a wall mounting bracket and the needed installation accessories.
Low Temperature Operation
One of the most important traits when it comes to moisture removal devices that are supposed to be placed in the crawlway is for these devices to handle operating in low temperatures. Evidently, the Ebac scores well when it comes to this aspect too, being able to deal with temperatures as low as 33 degrees Fahrenheit without flinching. What helps it be so efficient in such a cold environment is the reverse cycle defrost system which melts away any frost as soon as it builds up.
What We Like
- Adjustable alarm humidistat
- Electronic defrost timer
- Sound pressure level 47 dB(A)
- Durable all steel construction
What We Dislike
- Some customers have complained about its durability
- Customer support failed some customers who were in need of instructions on how to fix issues with their dehumidifiers
As it features a built-in humidistat which endorses convenient use, and it is capable of operating in areas of up to 1000 square feet, it makes for a perfect choice. Furthermore, it comes with an integrated pump which eliminates a good portion of maintenance work, allowing you to enjoy more free time.
9. Fral FDK70
With a capacity to remove as much as 104 pints or 13 gallons of moisture from the air each day, this Fral entry is your go-to option if you want to cover a wide and damp area. It is intended for use in spaces of up to 2000 square feet, so it is indeed perfect for crawlspaces or even basements.
It can withstand operating in low-temperature conditions, its internal components not being damaged by ice all that easily. It measures 21 inches in width, 20 inches in height, and 25 inches in depth, and it weighs 110 pounds, so it’s best that you find a permanent spot to place it. It’s low on energy consumption and it stays quiet while it operates. In addition, the manufacturer provides a 5-year warranty on parts and labor, so you won’t have to spend a buck on repair or replacement procedures while the warranty is active.
What We Like
- Low power consumption – rated at 650 watts
- Boasts a quiet operation which ensures it won’t be a nuisance – only 46 decibels
- Compact design – measures 21 inches in width, 25 inches in depth, and 20 inches in height
- Backed with a 5-year warranty
What We Dislike
- Comes at a spicy price
- Doesn’t have the most durable build
Although there are plenty of other selections to go for, if you need a moisture removal device for a 2000 square feet area, this Fral entry is your go-to choice. It’s compact, comes with a great warranty, and can remove up to 104 pints of moisture per day, so there is no need to doubt its performance.
10. Thermastor Santa Fe Advance 2
As it can remove up to 90 pints of moisture per day, you can confidently rely on it to clear high humidity levels in a matter of days. It provides an optimum operation in spaces of up to 2200 square feet, and as it can run in environments where the temperature ranges from 49 to 95 degrees Fahrenheit, you can basically use it wherever you want without worrying that internal parts might freeze, for example. It features a MERV-8 filter that captures microscopic allergens, protecting internal components from the damage they might cause and cleaning the air in the meanwhile as well. as it is highly energy efficient, drawing little power to run, it has even received the sought-after Energy Star certification.
After a power outage, it automatically restarts and picks up from where it left off. It features a separate fan control that ensures continuous operation even when it is not removing moisture from the air. The onboard humidistat it comes with presents a convenient manner to customize environmental conditions as you please. Additionally, the manufacturing company covers it against defects for 6 years.
What We Like
- MERV-8 particle filter prevents dust and other particles from damaging internal parts
- Energy Star certified for its low power consumption
- Automatically restarts in case of a power outage
- Backed by a lengthy 6-year warranty
What We Dislike
- Does not feature a timer
- Not the quietest model out there
Perfect for spaces of up to 2200 square feet, and able to normalize humidity levels in a matter of days due to its high moisture removing capabilities, this Thermastor entry is one of our top recommendations for those who are on a budget as it does not only perform exceptionally, but it comes at a cheap price too.
11. Fral FDK54
One of the more reasonably priced options on this market, the FDK54 from Fral will undoubtedly fit perfectly in any crawl space. Able to operate even in improper conditions as it can withstand temperatures as low as 33 degrees Fahrenheit, this is a moisture removal device you cannot go wrong with. Over a 24-hour period, it actually removes as much as 10 gallons of moisture from the air, so a significant increase in air quality will be noticeable in a matter of days.
Obviously, we cannot overlook its great area coverage of 1600 square feet which recommends it for use in larger spaces. Although it really packs a punch, it is quite silent when operating, which is a major plus. Furthermore, it features a digital humidistat that you can set in 1% increments to program what humidity level you desire the indoor space to reach.
What We Like
- Energy Star certified for its superior efficiency in terms of energy consumption
- Lightweight – weighs only 68 pounds, making it easy for you to install it
- Backed by a 5-year warranty
- Consumes only 510W when operating
What We Dislike
- Asking price is high
- In the long run, it will suffer from performance loss
Although it is not the cheapest product in this niche, Fral is still an investment worth making considering that it can remove up to 10 gallons of moisture per day. Furthermore, it boasts a hassle-free use due to the digital humidistat it comes with.
12. HORIZON TITAN XG 60
For smaller spaces, you could use a more compact moisture removal device with an equally satisfying performance as the larger previous models. Therefore, this one could be an excellent choice for you that can handle humidity levels of 95% without any effort. The machine can absorb moisture from spaces measuring 400 sq. ft. and it can collect 60 pints per day if the humidity is at a maximum of 60% or 120 pints per day in humidities of 90%.
Unfortunately, it does not include an integrated pump that would evacuate moisture at a higher point, it only comes with a hose that can throw water at ground level. Among the features of the HORIZON TITAN XG 60, we mention the washable filter, the 52dB quiet operation, and the digital control that makes it very easy to use.
What We Like
- Built in washable screen filter
- Digital control panel for intuitive use
- Sound pressure level 52 dB(A)
- Energy Star certified operation
What We Dislike
- Not the best feedback in terms of durability
- Some customers reported leaks from the condenser coil
Although it does not boast the best area coverage out there, what no one can deny regarding the operation of the Horizon is the fact that it is able to remove up to 120 pints of moisture per day when it is placed in a highly humid space. Overall, its performance is undeniable in terms of quality, so we recommend you purchase it.
Do You Really Need One?
Everybody knows that crawlspaces are extremely damp, even if they should not be. Moisture can lead to dangerous mold growth that will affect your health and it can damage the supporting structure as well. In most cases, even a well-insulated space can become a home for mold and mildew and that is a dangerous situation that should be solved immediately. The worst part is that chances are you will notice the moisture problem when it has already affected your house in a serious matter. That is why a dehumidifier is in demand for keeping moisture under control.
How We Tested
Evidently, the aspect of the greatest importance is the efficiency of the device when it comes to lowering humidity levels and normalizing them. To test all products and see just how well they perform from this point of view, we first tested humidity levels indoors with the help of a humidistat, and then let each device run for 2 hours. After the time passed, we tested humidity levels again to see what difference was made by the use of each dehumidifier, and compared results in order to rank the products according to their performance quality.
Even though it will mostly be out of your way, it is still important to check the noise output as it can become an issue at a given point. This is why we took it upon ourselves to test each product and see what is the noise level produced when it operates. We tested this parameter with the help of a decibel meter that was placed 1 foot away from the device, comparing the results to see what models are quieter when they run.
In order to figure out how big of a difference using these devices will make when the electric bills arrive, we tested each of them to see how much power they draw in order to remove 10 pints of moisture. This is the best way to determine energy efficiency, a factor of great importance to any customer as no one desires to end up with an energy draining device that is too expensive to run, especially those who deal with extreme dampness and need to rely on it constantly.
The crawlway can get pretty cold, so it is important for the dehumidifier you place in it to withstand the environmental conditions in order for it to function properly. At a steady 40 degrees Fahrenheit temperature, we checked each and every product to see if it operates just as well as it does in regular temperature environments, and we checked for frost to not build up inside either.
|Product||Humidity removal||Noise output||Energy efficiency||Low temperature operation|
|Overall score: 10/10|
|Overall score: 9/10|
|Overall score: 8.3/10|
|F515 PHD 200||10/10||10/10||10/10||9/10|
|Overall score: 9.8/10|
|Overall score: 9.5/10|
|Overall score: 8/10|
|Overall score: 9.3/10|
|Overall score: 9.5/10|
|Overall score: 8.8/10|
|Overall score: 8.3/10|
Advantages of Crawlway Dehumidification
Given the narrow design, these spaces require a special type of dehumidifier that will fit and will be powerful enough to absorb all the air humidity. While basement or industrial models can be too big and bulky for the space available and the regular room units are not powerful enough, the crawlway moisture removal device is a perfect choice. Most moisture removal devices are compact, rugged and will be able to retain mold from affecting the walls of your home, thus, damaging its structure.
In addition, they will also protect your health. In fact, it is important to know that what is hidden in your crawlway will eventually end up in your home. We all know that our homes are filled with invisible mold spores that float through the air. You might think that it is a long way to your bedroom, but mold spores travel very fast and it won’t be long until they will reach your entire house. These tiny particles are the main cause of allergies and other health issues. However, in order to prevent these problems, it is recommended to install a quality moisture removal device in your encapsulated crawlspace. As mentioned before, by installing such a device, you can improve the air quality in your home. Plus, by controlling moisture you can reduce or prevents symptoms of allergies, such as eye irritation, headaches, and respiratory problems, as well.
Crawlway vs. Basement Dehumidification Devices
Once you start seeing mold signs in your house, you must take immediate action and invest in a dehumidifier that can deal with large areas like the crawlway. At a closer look at the market, you will notice that there are two types that are advertised to work in both basements and crawlways. These two types are very similar and you can count on each one of them, considering that they are very much alike.
They are pretty much the same size, being designed for large areas like cellars, garages, crawlspaces, and basements. Also, they have a high absorbing power that enables them to deal with excessive humidity cases.
In addition, you must make sure that the one you choose can operate in low temperatures so a defrost feature is mandatory. Also, take into account that you will hardly reach it to empty the tank so it is best to go with a model with a pump that evacuates the moisture on its own. The only noticeable difference between the two types is the shape, more exactly the horizontal position of the device. This one must be shorter in order to fit shorter areas but this is only required if your crawlway is very small in height. Otherwise, you can go with a basement unit without any worries.
Where Does the Moisture Come From?
There are quite a few factors which contribute to high humidity in the crawlway, and the bright side is that you can take proper measures to combat them if you know what to look for, thus fixing moisture levels to prevent the devastating consequences which will ultimately unfold if you are not careful.
- Outside air: Vents and openings are the sources through which outside air enters the crawlway, raising the relative humidity inside as condensation can form due to discrepancies in temperature. During spring and summer, it is all the more likely for outside air to be the main culprit as it is high in humidity, inevitably transporting the excess moisture inside.
- Standing water: Always check to see if there are puddles in the crawlway as their presence might indicate a more severe problem which needs rapid tending to. What you must do if this situation emerges is check for leaky plumbing or drainage problems around the house.
- Ground moisture: Evaporation is the culprit here, moisture in the ground being released into the air and ultimately raising humidity levels. You must check the foundation walls as well, as they can release moisture as well. If you suspect that the walls of the foundation are the problem, you should add a coat of waterproof paint. When it comes to the ground, you can cover it with plastic sheets to diminish the release of vapors into the air .
TIP: To obtain the best results, we recommend that, in addition to adding a dehumidifier to this area, that you install a vapor barrier as well. basically, you should seal it off from the outside so that the aid inside remains healthy, clean, and dry.
Ratings Criteria Explained
|Humidity removal||Models with higher humidity removal ratings per day received higher scores as these products are capable of resolving dampness problems fast, regardless of how severe the situation is.||Horizon Titan XG 60|
|Coverage||It is preferable for the device to cover a wider area as it can comply to the needs of different types of spaces you might want to use it in. Thus, the bigger the area coverage, the higher the score received.||Dri-Eaz F413 Revolution|
|Power consumption||No one wants to spend a fortune on operating household devices, so we made it a point to rate products according to the amount of energy they consume to run.||Thermastor Santa Fe Compact 2, Dri-Eaz F515 PHD 200, AlorAir Sentinel HDi90, Horizon Titan XG 60, Thermastor Santa Fe Advance 2, Fral FDK54|
|Operation in low-temperature conditions||The crawlway is a space where temperatures are bound to be extremely low most of the year, so it was important to rate our picks according to their durability in low-temperature conditions.||Ebac CD30E, Horizon Titan XG 60, Fral FDK54|
|Design||The crawlway is a tight space, so it is important for the moisture removal device you place there to be as compact as possible. Evidently, models that boast a more compact design received a higher score.||Dri-Eaz F413 Revolution, Dri-Eaz F515 PHD 200|
|Warranty||The length of the accompanying warranty shows for how long you can depend on the manufacturer to repair or eventually replace the product for free when it becomes defective, evidently being best for the agreement to span on as many years as possible.||Dri-Eaz F413 Revolution|
✔”I’m super satisfied that I paid the extra money and actually got a dehumidifier that works, it is one of my best acquisitions yet!”
✔”It was really easy to set up for continuous drain and it really keeps quiet despite the high moisture removal, I really like it.”
✔”When the door is closed in the room I put it in, I can’t even hear it running! Way better than my old one, I had to turn it off during the night or when I was working, really noisy.”
✔”I have had it for about 8 weeks now, and the hygrometer shows steady, normal humidity levels ever since.”
✘”Had it for 3 years and it just stopped working. Expected more of it, to be honest, now I have to get it fixed and it’s going to take quite a while.”
✘”I don’t recommend running the automatic feature, it might be a bigger headache to start and stop its operation yourself, but it helps prolong its lifespan, so it’s worth it.”
✔”Humidity used to be in the 70-80% range before I got it, how it has never went past 55%.”
✔”Drainage has always been perfect, never had other operational issues with it either.”
✔”I monitored its activity since I got it with my humidity monitor, I can say for a fact that moisture levels have been constant and normal ever since.”
✔”It might be expensive, but it beats residential models when it comes to moisture removal, that’s for sure. Worth the money if you have high humidity issues.”
✘”It leaked directly on the floor, I paid too much money for it to have this issue, honestly.”
✘”The legs are hollow, I find the design to be a bit poor considering the asking price.”
✔”It made impressive overnight improvements in my damp basement, took me by surprise.”
✔”I had a few issues with it at first, but customer support was really helpful, they guided me to a proper setup and use.”
✔”Was skeptical at first, but I now have it for 4 months and I can say that I’m pleased to have bought it.”
✔”It’s effective and keeps quiet, unlike my old dehumidifier that made screeching sounds all the time.”
✘”It didn’t service me as I expected, honestly, was a bit disappointed.”
✘”Mine broke down after 11 months, I got it fixed, but I didn’t expect it to be prone to issues so fast.”
✔”I like the solid build and the compact design, it’s really worth the money asked for it.”
✔”It’s quiet and doesn’t run that often to keep moisture levels at 50%.”
✔”It took only 2 hours for it to lower humidity from 72% to 50%.”
✔”I kept mine working 24/7 for the past 3 weeks, power consumption isn’t all that high and humidity hasn’t been high ever since.”
✘”The lowest humidity setting it provides is 40%, I’m really disappointed by this.”
✘”Quite costly considering that it’s not the best product out there.”
✔”Took out all the water in the crawlway in less than 2 months, considering the damage it had to deal with, it really did an impressive job.”
✔”Easiest setup and operation I ever dealt with, no headaches in the process.”
✔”Now humidity is in the 40% range, and it used to exceed 80%, it was a wise decision to use it.”
✔”Customer support is exceptional, they really provide you with all the help you need throughout the installation process and whenever you have operational issues.”
✘”I find it to be disturbingly loud, honestly.”
✘”Had to return the first one I got, it didn’t work.”
✔”Six hours after I set it up, humidity dropped 20%.”
✔”I really like the fact that it drains the moisture directly, I don’t have to work on emptying it myself.”
✔”I added it to my heat pump system, it helps maintain a constant 55% moisture level.”
✔”I installed it myself, was one of the easiest tasks I ever had to do.”
✘”It’s a little noisy, but it’s not a big deal necessarly.”
✘”Controls are positioned ineffectively as it makes it hard to reach them.”
✔”I used it in the crawlway and the basement, did a perfect job in both spaces, lowering humidity in a matter of hours.”
✔”Stays so quiet I sometimes forget about it completely.”
✔”I like the digital controls it features, it’s one of the most intuitive devices I acquired in quite some time.”
✔”I really love the automatic drainage, no need for me to put any effort into emptying what it collects throughout the day.”
✘”I don’t like the bulky design, doesn’t appeal to me.”
✘”Was hard to maneuver, had to call in a friend to set it up.”
✔”I installed two of these a couple of months ago, and not only did they tend to regulate moisture in the crawlway, but humidity levels dropped slightly indoors as well.”
✔”Build quality is great, I can see it running impeccably for years to come.”
✔”Works great, removes moisture just as I expected.”
✔”After 6 months of service, I can say that this is a smart purchase as it got rid of the musty smell in the basement completely.”
✘”Internal parts are really cheap, I thought I would save money on this purchase, but I don’t think this will be the case.”
✘”I tried calling their sales department regarding the remote, but I couldn’t get in touch with them.”
✔”It’s been doing its job fine for the past 4 months since we got it, we’re happy with the purchase.”
✔”I used it in the basement too, it made a big difference in air quality.”
✔”I run it constantly and there’s barely a difference in the utility bills, now that’s what I call energy efficiency.”
✔”I thought it wouldn’t do a great job as it is cheaper than most products, but I can say that it has truly impressed me, mold hasn’t reappeared since I got it.”
✘”Mine makes an annoying humming noise for about a week now, really bothersome.”
✘”I find the design to be quite cheap, fits the asking price, I guess.”
✔”It’s been working well and serving its purpose for the past year, I cannot complain about it.”
✔”Stays really quiet, I love this about it.”
✔”Perfect for my damp basement, mold hasn’t been an issue since I have it.”
✔”Well built and it remove excess humidity fast, in only a few hours after setting it up it made a huge difference.”
✘”I had a bit of a hard time setting it up, didn’t expect it to be difficult from this point of view, honestly.”
✘”It worked fine in the beginning, but then it suddenly started displaying an error code.”
F.A.Q. If I already have mold in the crawlspace, how should I proceed with the installation of the dehumidifier?
In case mold has already made an appearance, you first have to remove it, and then install the dehumidifier. The role of this device is to maintain proper humidity levels by removing excess moisture, so it is intended for upkeep, not for the elimination of pre-existing mold.
Will the appliance prevent mold from being a reoccurring issue?
Yes, as aforementioned, the role of the moisture removing appliance is to prevent the apparition of mold by maintaining proper humidity levels. If you eliminate the pre-existing mold and install the dehumidification device, this issue will not reoccur ever again.
Is it important to look into the noise output of the moisture removing appliance?
Considering you most probably live in an adjacent room to the crawlspace, yes, it is important to look into the noise output of the device. If it is near rooms like your home office, bedroom, the nursery, or living room, you will be inevitably bothered by the noise output of the appliance. For the moisture removing device to not present a nuisance, we recommend you go for a model which produces less than 60 dB when it runs.
How much moisture should the appliance remove per day?
The question to this answer strictly depends on your specific needs. There is no way to say that a certain capacity dehumidifier is more appropriate for you without checking how severe your humidity problems are first. However, if we were to give you a piece of advice, we would recommend you go for one that is capable of removing at least 50 pints of moisture per day as it is indicated to go for bigger rather than smaller from this point of view.
Finding a dehumidification device is not necessarily the easiest thing to do as the market for these products is filled with many “duds”. To make sure that you won’t end up spending your cash on a dehumidifier that won’t actually deliver the performance it promises, we recommend you check the comparison table at the beginning of our article once again and make a pick from the ones we put at your disposal as these products are all tested and guaranteed to work great.
Let us review some of them once again. The Thermastor Santa Fe Compact 2 ranks first as it can handle reducing air moisture in spaces of up to 1600 square feet. Furthermore, it can work even when the environment is extremely cold, and it comes with an integrated pump which makes operating it a lot more convenient as the moisture is automatically drained. If our first pick is a bit too spicy for your budget, however, we recommend you opt for the Fral FDK54 as it not only comes at a cheap price, but it provides a generous performance in terms of moisture removal, eliminating up to 10 gallons of excess humidity from the air per day.