Best Dehumidifier for Basement In 2021

What's worst in the basement? The stale and damp air that is hard to breathe or the smelly, musty mold smell? While we equally dislike both, there is a cleaning device that would be able to get rid of both issues. In this post, we will introduce you to the best humidifier for basement that is damp and filled with mold. We will also share a few tips on choosing the right models, where to place the dehumidifier, and how long to kept it from running. Whether it is a crawl space, finish or unfinished basement, nothing is impossible for the moisture sucking machine.

How Long Do I Need to Run a Dehumidifier In Basement?

It is encouraged to keep a dehumidifier in a basement to reduce the humidity because of poor ventilation. We recommend running the dehumidifier for at least 12 hours a day depending on the dampness condition. The higher the humidity level, the longer the device should be kept running so more moisture can be captured. To avoid overflowing on the dehumidifier bucket, look for a unit with an automatic shut-off feature. This would stop the dehumidifier from work once the water bucket is full. Alternatively, if the unit supports continuous drainage option, you will not have to check on the dehumidifier regularly.

Who is this for?

If you have a basement that stinks, infested with mold, mildew, and other microorganisms, a dehumidifier would come in handy. It is also suitable for people or young ones that have COPD, allergies or breathing difficulty. If you live in a humid environment all year long, a dehumidifier would also work at any corner.

2020 Best Dehumidifier for a Basement

DehumidifierOnline Price (Amazon)CapacityCoverageScore
Tosot 70 Pint Dehumidifier

70 pints (45 pints DOE 2019)4500 sq. ft. (418 m2)4.5
Vremi B07JMZJX4B 70 Pint Dehumidifier

70 pints (45 pints DOE 2019)4500 sq. ft. (418 m2)4
hOmeLabs HME020031N 70-pint Dehumidifier

70 pints (45 pints DOE 2019)4500 sq. ft. (418 m2)4.5
Friedrich D70BP 70-pint Dehumidifier

70 pints (45 pints DOE 2019)4.5
Danby 70-Pint Dehumidifier

70 pints (45 pints DOE 2019)4500 sq. ft. (418 m2)4.5
Keystone KSTAD70C 70-pint Dehumidifier

70 pints (45 pints DOE 2019)4500 sq. ft. (418 m2)4
How Do We Measure?
Capacity PintCapacity Obviously the bigger the dehumidifier's capacity, the more moisture per day it would be able to take in. While a small basement typically does not need anything above 30-pint, it's good to know it is there. So if the particular model has high capacity and is priced right, it will score well in our ratings.
Continuous PumpDrainage system Basement is not the place most will hang out often thus the dehumidifier will often be left unchecked. That is why a continuous pump is a very important feature as it allows the dehumidifier to pump out the water straight to a drain hole. A must-have feature as you will not have to empty the water tank or worry the dehumidifier would stop working because the reservoir is full.
TimerTimer Another must-have feature here on the list as it will prevent the dehumidifier from working pass the exceeded time. Typically one will set and leave it running for a couple of hours every day to extend the device service lifespan. Some timers can also be set to turn on the machine at a specific hour.

Tosot is not the most well-known brand in the world but makes no mistake, it produces some of the finest dehumidifiers out there. First of all, its durable design will withstand long operation hours without fail. It can undoubtedly cover up to 4500 square feet of room size. The drainage tank is huge and even if is filled with water, removing it is easy. Finally, features like autonomous shut-off, auto defrost, continuous drain are all available.

Tosot 70 Pint GDN70BA-A3EBA2D is a premium dehumidifier for those that have an endless mold problem in their basement. It is however slightly more expensive close to $300. Pump hose, as usual, is an additional purchase that will further increase the cost. Not to mention the overall dimension is bigger than most models listed here. Something you should be aware of.

What's cool:

  • Solid build quality that would be durable enough for continuous operation.
  • Powerful enough to stop mold from thriving in the basement.
  • Big drainage tank with grabbing handle and see-through indicator.
  • Energy Star rated and whisper-quiet operation at low speed (48 dB).

What's not:

  • One of the bigger and heavier models in the list. Not a big problem if you plan to place it in the basement.
  • Noise can be clearly heard that may not be a big deal if you are not spending time beneath.
± 249 p
 Online price*

This might no be an official 70-pint model, Vremi B07JMZJX4B 70 Pint Dehumidifier is no slouch. For start. standard features are all here including drain direct access, automatic shut-off, defrost and timer. It is also a high capacity model that will suck in a great deal of moisture and release clean, vaporless air out. As such, it can cover up to 4500 sq. ft. of basement space, killing off mold food source. Say goodbye to all musty mold problems from continuing spreading across the basement.

Despite Vremi clean looking design, it is very easy to use without leaving out practicality like casters and handles. However, it can be a tad noisy in both comfort and turbo mode. Price is also not the cheapest but is still feasible. Consider this if you need a dehumidifier that looks good and performs well.

What's cool:

  • Clean and minimalist design unlike any other dehumidifier here.
  • 70-pint capacity that can cover even the extremely damp condition.
  • Dedicated controls for every function including filter wash indicator.
  • Auto shut-off, defrost, continuous drainage feature are all here.

What's not:

  • Slightly expensive as pump is not bundled in the package.
  • Loud in both comfort and turbo mode. Not a big deal if no one is in the basement.
± 279.99 p
 Online price*

Don't have a huge basement yet need a dehumidifier that is intuitive to use and will work straight out of the box, hOmeLabs HME020031N is your answer. The modern exterior not only will enhance your gloomy basement, the outer filter is also very easy to clean on a monthly basis. Right at the top, you will find a control panel that allows quick adjustment on timer, continuous mode, filter (cleaning), and turbo mode. It can cover up to 4,500 square feet whether it is unfinished, finished basement, or crawl space.

hOmeLabs HME020031N 70-pint dehumidifier is great to operate without a pump as it has a large water tank. If you plan to use it with a continuous drainage option, you can but keep in mind that the pump is not included in the package. The drain host fitting is not super tight but it will still work by twisting it deeper.

What's cool:

  • High-performance model with built-in handles, casters wheels, permanent filter, and digital display.
  • Adjustable humidity with separate timer controls, continuous mode, filter indicator and turbo mode.
  • Large reservoir with clear indicator. Support continuous drain as well.

What's not:

  • Will take its own sweet time in defrosting especially in winter.
  • Drain hose connector is slightly flimsily built.
± 249 p
 Online price*

Yet another sleek, modern dehumidifier for wet basement. Friedrich 70 Pint Dehumidifier might not be the new kids on the block, it is still highly functional and comes with everything you need. However, there are two things that make it stand out. First, the washable slide-out filter can be easily taken out for cleaning. Then there is a 6-foot power cord plus casters that allow you to slide the dehumidifier centrally in the basement. All in all, if you want to breathe comfortably in a basement free from allergens, this would be the right call.

Friedrich D70BPA 70 Pint is highly flexible in clearing out the water. You could either opt for the condensate bucket (manually), built-in drain pump, or continuous drainage outlet. The only downside to this particular model is the track record. There are users who complained about the compressor durability but so far our test unit is doing A-OK.

What's cool:

  • Highly reliable model that you could leave it running for days without having to check back on it.
  • Digital display is able to show current room temperature and humidity levels.
  • Easy to clean, slide-out filter.
  • Support 3 Drainage options (removable 16 pints bucket, built-in drain pump, continuous drainage).

What's not:

  • No see-through water indicator on the bucket.
  • The reliability records are not the greatest but those could be due to the earlier batch models.
± 234.59 p
 Online price*

Truth to be told, Danby DDR070BDWDB is our favorite choice on the list. Why? It is inexpensive, considerably compact for a dehumidifier, and of course the 70-pint capacity for up to 4,500 sq. Ft. of basement size. It is also very easy to use with a complete set of humidity and fan speed controls. Danby dehumidifier also works very well at low temperatures, particularly in winter. Perfect for continuous drainage option or if you decided to stick with the classic bucket method, auto shut-off will ensure there is no over-flowing.

Given its slightly smaller body nature, the water tank is not the biggest in its class. It is also slightly noisy but that's not the main complains. The dehumidifier can get heat up pretty quickly that might not be everyone's liking. While the heat plays little part in the room temperature, a hot and stuffy basement could do without this feature.

What's cool:

  • Excellent for wet basement with its swift mositure capturing.
  • Able to operate low temperatures with its automated de-icing feature.
  • Smart dehumidifying that automatically adjusts humidity based on room temperature.
  • Captures moisture in its large 16 pints bucket or the convenience direct-drain system.

What's not:

  • Known to generate a bit of heat that will have an impact on the basement temperature.
  • Hose connector is ironically hard to connect without applying some pressure.
± 292 p
 Online price*

Keystone KSTAD70C does not have an outstanding exterior that will wow you at first sight. In fact, last we checked there is no official website at all. So why this is one of the best dehumidifiers for basement? It's simple. For less than 200, you'll get a 70-pint coverage with the exact same features as every other dehumidifier here. All the controls, displays are at the same spot with the same functionality. There is absolutely no learning curve at all on this device.

Keystone 70-pint dehumidifier downside? the bucket is slightly hard to insert back. Other than that, everything about Keystone is exactly what you should expect from a dehumidifier. simple and straightforward to use with a single click of a button.

What's cool:

  • The cheapest model here bundled with all the necessary features.
  • Covers large basement up to 4500 square feet of room space.
  • One of the better auto-defrost function that we ever tested.

What's not:

  • The bucket can be hard to reinsert back after emptying.
  • If you are going to the drainage route, the hose outlet does not fit quite well without some tweaking.
± 229.99 p
 Online price*
** MRSP (Manufacturer's Suggested Retail Price)/ RSP (Retail selling price) is provided by cleanairprice.com. Accurate at the time of posting.
^ Annual filter cost is calculated based on filter price and 12 hours of usage. Pricing could vary depending on air quality, usage frequency, and speed.


What Type of Dehumidifier Do I need for My Basement?

There are four types of dehumidifiers in the market with different technologies. Mechanical/ refrigeration, Absorption/ Electronic desiccant, Thermoelectric, and Ionic membrane. Mechanical/refrigerant is the most common type of dehumidifier used in the basement. It is effective, reliable and can operate in long hours without fail. It works by pulling the moisture into the machine via the compressor. In condensation form, the collected water will drip down to a bucket or flow out through a drainage pump. Even in cold temperatures, most of the mechanical/ refrigeration models come with auto defrost mode. This will ensure the dehumidifier has a smooth and uninterrupted operation, especially during winter.

What Is The Best Dehumidifier For a Damp Basement?

We all know that the dehumidifier is great for an unfinished, finished basement, or crawl space. Any of the above choices would be ideal for a damp basement but there is a caveat. You would need to account for the basement room size and dampness condition. The larger the basement or higher the humidity, the bigger capacity dehumidifier is needed. See the 4 different dampness categories below.

  • Moderately Damp with 50-60% humidity - A 30-pint dehumidifier can cover up to 300 sq. ft. while a 70-pint model can go up to 1,500 sq. ft.
  • Very Damp with 60-70% humidity - Again 30-pint for 300 sq. ft. and 70-pint for 1,500 sq. ft.
  • Wet with 70-85% humidity - You will need at least 40-pint for 300 sq. ft. of space and 90-pint for 1500 sq. ft. of space.
  • Extremely Wet with 85-100% humidity - The mother of all dampness. You will need at least a 40-45 pint capacity dehumidifier and a 90+ pint capacity model for 1500 sq.ft.

Learn more about the right dehumidifier for different room sizes here.

How to Choose The Right Dehumidifier?

Dehumidifier is a simple appliance that exists with just one sole purpose. However, there are many variants in the market that would play a role in determining the pricing of the unit. While obvious the better specification and more capable it can be, there is no point in picking a full-fledged model when you only need a small unit. Vice versa, picking an underpower dehumidifier will not be sufficient to cover a large basement. Without further ado, let's go through some of the key features in picking the perfect dehumidifier. Take note that some of the features we are about to introduce below may or may not be applicable to your condition.

  • Pint capacity - The higher the numbers, the more moisture a dehumidifier will be able to capture per day. Very important features you need to take into consideration. If you have a fairly small basement, consider getting a smaller 30-pint dehumidifier.
  • Bucket size - Size does matter. If you plan to manually remove and empty the water, a bigger reservoir is a must. It will reduce the frequency of you having to clear out the water.
  • Continuous mode - Having it connected to a drainage floor will give you peace of mind on not having to emptying the water tank. Perfect for those that barely visit their basement.
  • Supportive features - Anti-frost, auto restart, timer, washable filter are some of the must-have features. Having all these will greatly enhance the usability of a dehumidifier.
  • Low-temperature operation - A must-have feature as the basement can reach close to freezing temperatures (33°F) during winter. Good news is most dehumidifier has no problem operating in harsh condition.
  • Power consumption - Dehumidifier is a big energy hogger. It can cost more than 100 dollars in electricity bills a year. If possible, go for energy-efficient models that are Energy Star Rated.
  • Noise level - Even though it is not as critical as the above features, the humming motor noise (above 50 decibels) can be very distracting. If you are staying in a basement with a dehumidifier turned on, make sure there is the option to set the fan speed to low.
  • Branding reputation - Never go for an unknown brand. Some brands just offer better services than others. They have quality products, more service centers, and easier warranty claims when needed.

Do I Need a Dehumidifier for My Basement

Whether it is crawl space, finished or unfinished basement, there is a likelihood a dehumidifier is in need. However, not all underground storage is tormented with moisture problems. If your basement does not hold any of the excessive moisture signs below, there's a good chance a dehumidifier is not needed. If there is, you will need to take immediate action to rectify the problem. The longer you wait, the more damage it will cause over time.

  • Humidity level greater than 55 percent - It's simple. Get a cheap hygrometer ($5-10) and see if the basement humidity level exceeded 55%. Anything above that is not good for you or your home.
  • Stale yet damp - If you feel the surrounding air somehow feels damp yet uncomfortable to breathe in. Other symptoms are your skin feels dry or cracked.
  • Mold and its musty smell – Mold thrives on warm and high humid environment. As you step foot in the basement, there will be a clear, rotting, stench smell that can be nauseating for some. Try and spot if there are any mold patches on the wall, pipes, floor or ceiling. If there is, you have a serious mold issue.
  • Clear rust, rot, and decay – If you notice exposed metal parts objects are rusting, or there are clear rot on wooden items, dampness is the blame. There are many different types of rot and colors. Regardless of the types, decaying wood products will appear soft and unusable if the moisture lingering problem stays.
  • Coughing and sneezing - Mold, mildew, and dust mites are few of the allergens in a basement. If you are experiencing all kinds of allergy symptoms, the basement could be filled with airborne microbes.
  • Condensation and ice build up – This is a clear indication on the high dampness level in a basement that can't get out. Also, check if there is fogging on basement windows.
  • Peeling or cracking paint on the wall – If you notice there are more and more cracks on the painted surfaces, try touching on the basement wall. If it feels damp, you have yourself a confirmation.

Kingston Kay

Growing up in New Orleans; one of the highest relative humidity in the United States, Kingston Kay knows a thing or two about humidity. Besides reviewing dehumidifiers for living, you will find him gyming in the basement.

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