If you’re considering on getting a dehumidifier for your home or workplace, there are a number of factors to consider. This article is going to help you decide which will be the best dehumidifier for your needs. Along with a buyer’s guide with some useful tips on buying the best humidifier, I’ll be reviewing several great options. We’ll be looking at three categories of products. Depending on where you use your humidifier and the size that you need, one of these categories should best describe your requirements.
We’ll start with a review of the most popular dehumidifiers, after which I’ll provide a comprehensive guide on how to set about choosing a suitable model. If you’re not sure what to look for, when buying a dehumidifier for your needs, this will be of considerable help to you.
Although basements vary in size, they all have one thing in common. A basement will usually be the area in any home where the most moisture collects. Since many basements are used as a laundry room, the importance of using a large-capacity humidifier, for damp to wet conditions, becomes even more important. So we’ll be reviewing dehumidifiers capable of removing moisture from 50 pints per day up to models capable of removing over 100 pints per day.
While these are listed as being the top humidifiers for a basement, you could use them for any large area, even a whole house dehumidifier, for environments with particularly high humidity. Prices can range from a little under $200 all the way up to more than $650. Pricing will depend on the size, features, and general quality of the product. Some brands will always more expensive than others, depending on their reputation and popularity.
1. hOmeLabs 4000 Sq. Ft. Dehumidifier 70 Pint
The hOmeLabs dehumidifier range consists of three models, 30 pint; 50 pint and 70 pint. The largest, 70 pint (9 gallon) hOmeLabs dehumidifier is perfect for a large basement – up to 4,000 sq. ft. Obviously, a dehumidifier with this kind of capacity is going to be a fairly bulky appliance. None the less, the hOmeLabs 70 pint dehumidifier has an ergonomic design and has casters for portability.
Measuring 15.4 X 11 X 24.3 inches, the hOmeLabs 70 pint model is perfectly in line with others in this class. It weighs a very reasonable 40 pounds and won’t be an eyesore in the room. So it’s just as suitable for a living room as it is for a large basement. Like most of the best dehumidifiers in this review, it has an Energy Star rating. So it’s economical to use.
The hOmeLabs dehumidifier has a large, 1.6 gallon water tank which is easily accessible form the front of the machine. It also has an outlet for a drain hose. So you have the option for self-draining. An easy to follow touch pad control panel, with an LED display, makes everything simple and logical. You have a 24-hour timer, defrost mode, and a turbo setting for rapid moisture removal. At, the maximum setting, it provides a very impressive 188 CFM air circulation rate. You have the option of a custom humidity setting for anything from 35% to 85% relative humidity (RH). It also has a reminder for filter cleaning, which is quite handy.
The hOmeLabs dehumidifier is designed for easy cleaning and maintenance. Accessing the filters is a breeze. Neatly concealed handles and casters make it just as easy to move. It also has an auto-shutoff mode, which adds to your hassle-free use. If the power goes out, there’s no need to worry, the dehumidifier will automatically reset itself when the power supply is restored.
As one of the best dehumidifier for a large basement, the 70 pint hOmeLabs model is real winner. With an average 4.6-star rating on Amazon (from more than 2,000 customer reviews), it’s abundantly clear that people really love this appliance. It also has an, above average, 2-year warranty. Most appliances of this nature only have a 1-year warranty.
2. Vremi 70 Pint Portable Dehumidifier
The Vremi 70 pint portable dehumidifier compares favorably with any of the best dehumidifiers for a large basement with one distinct difference, the price. It’s unbelievably cheap, yet has the quality and features to match any of the high-end dehumidifiers which cost a good deal more. I don’t think many can pass up a deal like this.
The Vremi 70 pint model looks and functions like any of the best dehumidifiers in this review. It stands 24.3 inches tall, with a width of 15.4 inches, depth of 11 inches and weighs 40 pounds.
The touch control panel includes all the features one would look for – continuous auto mode, with the option to set your humidity level between 35% and 85%. It has a high circulation, turbo mode, which boosts the fan up to 188 CFM. Along with this, it has auto restart and defrost. The Vremi is rated for temperatures from 41°F to 95°F.
The 1.6 gallon water tank and a hose connector for continuous draining is on a par with any of the best dehumidifiers in this class. It has handles and casters for easy mobility and access to the filters and water bucket as easy you’ll find. The Vremi 70 pint dehumidifier also ranks among the best as far as electricity consumption goes, with an Energy Star rating.
So why is the Vremi 70 pint dehumidifier so much cheaper than all the others? There doesn’t appear to be any real answer to this. It’s certainly not lacking in the quality department and has everything you’d find on the expensive alternatives. It has an, above average, 2-year warranty and customer response has been very positive. Personally, I can’t find any reason to pay more. The Vremi has it all at an incredibly reasonable price.
3. Frigidaire 50-Pint Dehumidifier
Considering that this is a highly respected brand, I feel that the Frigidaire 50-pint dehumidifier is not at all that expensive. It’s one of the smaller basement humidifiers, but is very capable with some great features. The Frigidaire 50-pint dehumidifier is an elegant looking appliance and is refreshingly quiet. I’d say that this is an excellent dehumidifier to use anywhere in the home.
This Frigidaire model is compact enough to be considered as a portable humidifier, measuring 12.19” X 15.96” X 24.25" at a weight of 44 pounds. It has swivel casters and a handle at the top that slots away when not needed.
It’s great for damp to wet conditions, removing 50 pints per day (relative humidity 35% – 85%). It’s also one of the best dehumidifiers for cold conditions and will function perfectly when the ambient temperature is as low as 41°F.
I like the versatility and convenience of the water tank and a drain hose. While the tank is quite small, it’s quick and easy to empty. The water tank has a handle and a splash-proof design, making for the ultimate in easy emptying. There’s a warning when the tank is almost full and the machine will shutoff automatically when it reaches the maximum tank capacity. If you prefer the convenience of a continuous drain, simply connect a drain hose to the outlet.
The Frigidaire is super easy to use with simple electronic controls and a 24-hour timer. At only 51dB, it is quiet enough to use anywhere. Even though this dehumidifier has powerful air circulation, it won’t have any noticeable effect on your electricity bill. The Energy Star rating makes it a very economical dehumidifier to use. The washable filters are also a money saver.
As one of the most popular 50-pint basement dehumidifiers on the market, there are a lot of customer reviews to give us an indication of what people think about the Frigidaire 50 pint dehumidifier. On Amazon alone, there are over 6000 customer reviews, with an average of 4.1-stars. This rating is actually better than one would think because of the amount of opinions given. Many of the 1-star reviews seem to be related an error report on the electronic display. Though when the error occurs, it seems to be mostly about an incorrect voltage supply from the power outlet. So it’s actually protecting the machine from damage that can result from incorrect voltage, which will happen occasionally from the utility supply. In most cases, you should be able to switch the dehumidifier off and then back on to reset the error report. So I don’t see this as a big deal, certainly not worth a 1-star rating. If it weren’t for this basic misunderstanding by users becoming confused over a basic error reading, I think the Frigidaire would probably rate very close to 5-stars on average.
I have a lot of respect for the brand and think that this is certainly one of the best basement dehumidifiers in its class.
4. Tosot 50 Pint 3000 Sq. Ft. Energy Star Dehumidifier
We’ll be reviewing the Tosot 50 pint dehumidifier, which is quite capable to serve any room, or basement, up to about 3000 square feet. There is also the option of a smaller (30 pint model), or a 70 pint version for a large basement. The 70 pint Tosot has a further option of a model with a pump. This means that the drain pipe doesn’t rely on a gravity feed and can be used with a drain that is higher than the pipe outlet, like a sink. So I have no doubt that amongst these, you’ll find the right size dehumidifier for the whole basement, or any other room in your home – large or small.
All the dehumidifiers in the Tosot range look great. The 50 pint variant measures 14.8” X 11.4” X 24” and weighs 49 pounds. Quality casters make it easy to move about. It has a fantastic water bucket with a swivel handle and baffles that prevent splash. The drain bucket holds approximately 2-gallons which is about a third of the 6-gallon per day moisture removal rate for this dehumidifier. This means that, if you’re experiencing high humidity, you’ll be emptying the bucket approximately every 5-hours. A warning light alerts you when the reservoir needs to be emptied. If you find that you’re emptying your dehumidifier more often that you’d like, there’s always the option of connecting the self-drain hose. This will provide a hassle-free, continuous drain operation.
The Tosot 50 pint basement dehumidifier has an Energy Star rating, so you won’t be using much electricity and it’s exceptionally quiet at only 48dBA. Despite being quiet and economical, the fan packs quite a punch, with an air circulation of 206 CFM at the highest setting. The filters are easy to clean with warm water and this needs to be done about every 250 hours of operation. It has super-easy touch pad controls with a digital display and, if there’s a power outage, the Tosot will reset automatically when the electricity supply is restored. Functions include continuous run, 3 fan speeds, a timer and timed delay, as well as automatic defrosting in cold weather.
Customer response to the Tosot Dehumidifiers has been a big thumbs up. People love the quiet operation and effectiveness of this product. It is very effective for high-humidity areas, like a basement. This makes it a great dehumidifier to use anywhere in your home, no matter what the climate.
5. Aprilaire 1850F Large Basement Pro Dehumidifier
If you need a dehumidifier for an extraordinarily large basement, or your whole house, the Aprilaire 95 pint dehumidifier should be the answer. They advertise this model, very conservatively for areas up to 3,000 square feet. Though, when you compare the specs to similar models from other brands, you should realistically expect it to handle an area of around 6,000 square feet or more.
I can’t help thinking that quoted figure of 3,000 sq. ft. may be an error. What you can be sure of, is that this is most certainly the king of home and basement dehumidifiers. It is designed and built in the US to the highest industrial standards.
This machine is built to last, with corrosion-free aluminum coils. Yes, it is expensive. But you are most certainly getting what you pay for. This is a high-quality product with exceptional capabilities and will probably outlast any comparable dehumidifier by a long shot. It doesn’t have the slick, elegant design like the others. Instead, this is a practical, incredibly durable appliance. The boxy design doesn’t take up much space, when you consider the high capacity 90 pint moisture removal capacity. It measures 27.5” X 12.5” X 17” and weighs 70 pounds. So it’s a heavy machine, manufactured using heavy-duty materials. It is fitted with strong casters, so you won’t have any problem moving this robust heavy machine.
Designed for low maintenance and ease of use, the Aprilaire 1850F is fitted with a continuous (self-drain) hose. There is no drain tank, so you need to have a drainage point to remove the water that is collected. The control panel, which is conveniently situated on the top or side of the machine, is superb and offers the ultimate in automated, hassle-free operation. A single touch button allows you to toggle through the modes and up / down arrows allow to set your humidity or 24-hour timer with perfect precision. All the information you need is presented on a comprehensive LCD screen.
Unlike the regular domestic dehumidifiers, the Aprilaire 1850F doesn’t have easy access to the filters. Instead of plastic clips, they’ve opted for a more durable approach, using metal screws. So it may not be as quick to access the filters, but it sure is going to last forever. Fortunately, the large industrial-grade filters only need cleaning (or replacing) once a year. This is economical and very convenient.
There are few electric appliances that offer this level of buyer confidence. Even though, you’re paying a lot more than you would for others that do the same job, you’re buying for keeps. The industrial grade design and build is evident in every inch of this magnificent machine. The exceptional 5-year warranty is clear evidence of the quality that you’re getting. This is probably one of the most reliable dehumidifiers that you can get.
Crawl Space Dehumidifiers
A crawl space, requires a very compact dehumidifier. Though small in size, these dehumidifiers need not be less effective than larger machines. Though a compact dehumidifier with the same capacity as a larger unit, is going to cost more. It requires more sophisticated engineering and components. Because access to a crawl space is never easy, it’s important that these dehumidifiers be more reliable. You don’t want hassles when it’s a not easy to get at the machine. So you should expect to pay more for a good crawl space dehumidifier.
1. Aprilaire 1820 Crawl Space Pro Dehumidifier
Like the larger Aprilaire 1850F (reviewed above), the 1820 crawl space dehumidifier is built to the highest industrial grade standards. It has the same, virtually indestructible aluminum coils and robust over-all design. It goes without saying that this is going to be one of your more expensive options.
But, like with any Aprilaire dehumidifier, the 1820 is worth every cent for its durability, reliability, and outstanding performance. Perfect for use in a crawl space, the Aprilaire 1820 is only 25 inches long, with a width and height of 12.5 inches. It is a little on the heavy side though – 50-pounds.
Despite the compact design, this dehumidifier handles up to 70 pints of moisture per day. It has a convenient continuous drain and the filters only need to be cleaned once a year.
The control panel can be mounted to the top or side of the dehumidifier, so you have easy access. It has all the automated functions that you could hope for, with easy to use touch pad controls and an LCD screen. You can control your relative humidity with perfect accuracy. Advanced sensors constantly measure both RH and temperature for a perfect environment 24/7. Something I find particularly handy, considering that a crawl space is hard to access, is the Wi-Fi smartphone app. You can check up on your dehumidifier from anywhere at any time.
As is to be expected from a brand renowned for producing high-end industrial grade dehumidifiers, the Aprilaire 1820 is not cheap. You’re paying top dollar for an appliance that will keep you in good standing for many years. Add to this, the ultimate in convenience and incredible features, the Aprilaire makes perfect sense for the buyer who never wants to compromise. It is also covered by their incredible 5-year warranty.
2. AlorAir Basement/Crawlspace Dehumidifiers
There are many reasons why the AlorAir dehumidifier is perfect for a crawl space. Not least of which is the great compact design and excellent reliability. It’s also one of the best dehumidifiers for colder climates with advanced defrosting without any disruption caused by downtime whilst defrosting. There are number of models in the AlorAir Sentinel product range. I’ll be reviewing the smaller HD55, which has a moisture removal capacity of 55 pints per day.
There are also a number of 90 pint options, which include a model with a pump for the self-drain hose and one that can connect to ducting. A rugged industrial design makes this a durable and reliable dehumidifier that should fit into any crawl space with ease. Dimensions: 17.7” X 11.8” X 11.8”, weight: 59.5 pounds.
The coils are protected by a tough epoxy coating which increases durability and prevents Freon leaks, thereby improving reliability. The ultra-efficient Hot Gas Valve (HGV) defrosting is perfect for cold areas (as low as 36°F) and this also means there’s no need for the dehumidifier to stop working whilst running a defrost cycle.
This is one of the quietest dehumidifiers with a noise level below 52dBA. The air circulation isn’t all that much, at 130 CFM. I suppose, a powerful fan might not be all that essential in a crawl space. You have all the manual and automatic functions that is required from a crawl space dehumidifier and the convenience of a continuous drain pipe. An optional remote control is available (sold separately) and the obvious benefit is that you don’t need access to the unit to adjust your humidity, timer, or any of the other functions. The slide filter housing makes for easy access and there are no plastic clips to cause problems over time.
At a fairly reasonable price, for an industrial grade machine, the AlorAir Sentinel dehumidifiers are excellent value for money. The advanced defrost technology can be of huge benefit for some. An Energy Star rating also makes this a very economical dehumidifier.
3. Drieaz F515 PHD 200 Compact Dehumidifier
Although quite expensive, the Drieaz F515 is an incredibly reliable, very compact crawl space dehumidifier with outstanding performance. Capable of removing 74 pints per day at a temperature of 80°F and RH of 60% and up to 120 pints per day (90°F & 90% humidity). There are few more reasons for considering this as one of the best crawl space dehumidifiers, as you’ll see read the review.Of all the crawl space dehumidifiers reviewed here, this is the only model a continuous drain pump as a standard feature. This means that it doesn’t rely on gravity for self-drain pipe. It also has a hanging kit and a ducting kit as optional extras.
Both of which can be extremely useful in a crawl space. Though I would have preferred to see a remote control, as this is another important aspect when considering a dehumidifier for a confined space.
Rugged build quality is the order of the day. With an aluminum frame and Polyethylene enclosure, the Drieaz F515 dehumidifier is built to last. I’ve read about a few computer issues occurring. But these are not the norm and will be covered under warranty. For the rest, it’s as tough as they come. A weight tag of 63.2 pounds certainly gives us indication that heavy-duty materials have been used in its construction. The unit measures 17.63” X 12.5” X 12.5”. This is very compact when look at its capabilities.
Apart from the absence of a remote control, the functions are perfect for a crawl space dehumidifier and it has full-function LCD screen. That is, if you’re able to access the machine to see what’s going on. It has a very effective fan, although I don’t have exact CFM specs for this model.
For a commercial grade, US made, dehumidifier, you will always have to pay a little extra. There are many who see the value on spending this kind of money a dehumidifier that is work hard for years and remain perfectly reliable. All of this can be said for the Drieaz F515, it’s an incredible product and definitely worth paying more for.
Commercial dehumidifiers are defined by their high capacity and improved duty cycle. They are, therefore, able to work harder for longer. A very durable design and high levels of moisture removal are the two main distinguishing factors when comparing a commercial dehumidifier to one that is intended for domestic use.
1. AlorAir Commercial Water Damage Restoration Dehumidifier
In the realm of the best commercial dehumidifiers, the AlorAir Storm LGR Extreme is very affordable. Despite being cheaper than many similar machines, it’s a very capable, large capacity dehumidifier with some great design features.
The waterproof design of this dehumidifier allows it to be completely immersed and continue functioning normally. You can dunk it into a pond with no consequence. It also has HGV defrosting which is great for cold weather (as low as 28°F) and eliminates downtime. The durable epoxy-coated coil is another example of the heavy-duty nature of this dehumidifier.
Rated for 85 pints per day (190 PPD at full saturation), it has the capacity for a relatively large commercial space. It also has a pump to assist the continuous drain function. This machine won’t become bogged down by extreme humidity.
Full automatic controls are a given and the bypass air design for the humidity sensor prevents short cycles and makes for easier maintenance. The inclusion of a remote control for all functions is yet another convenience. It is compact enough for a commercial dehumidifier, measuring 22.8” X 13.7” X 17.3”, though it weighs a hefty 75.5 pounds. The fan is very impressive with a 210 CFM rating. Considering the high-powered fan, the noise level is more than acceptable at less than 58dBA. Economy is also good (5.4A at 115V). A washable G3 filter adds to these savings even more. The filter also has easy access for hassle-free service.
Although the AlorAir Storm LGR Extreme is cheaper than most similar commercial dehumidifiers, it has the features and abilities to compete with the very best. Quality appears to be of a very high standard, I haven’t been able to find any complaints raised as to its reliability. The staggered warranty agreement is also quite satisfactory: 1-year general warranty, 3-years for the refrigerant system and 5-years on the compressor.
2. COLZER 232 PPD Commercial Dehumidifier, 232 Pints 29 Gallons
The Colzer 29-gallon commercial dehumidifier has won me over on so many levels. From its very reasonable price to the huge capacity and great design, this is a superb product. If I were to find anything to complain about, it would be the bulky size and heavy weight. But this can be expected for such a heavy-duty, large capacity commercial dehumidifier. The great design certainly makes it easy to maneuver this big machine when needed.
Like I said, this is a big beast of a machine, weighing a staggering 105.8 pounds. It stands 38” in height, with a width of 23” and a depth of 22”. So it’s larger than most. But then again, it has a whopping 232 pints per day capacity, so it can handle a very large area, up to 8,000 sq. ft.
If you take into account that this dehumidifier is capable of controlling the climate in a large warehouse, its size and weight become more acceptable. It is made easy to move, thanks to large 8” rear wheels and swivel casters at the front. It also has a loop handle to assist you in moving it more easily.
The control panel, with an excellent LCD display is one of the best. You have fully automated and customizable control functions that are easy to use. A rapid 10-minute dehumidifying function is a great extra. It has a standard, gravity feed continuous drain. So it won’t pump the water, but there’s no need to constantly empty a water bucket.
Despite its big size, this is quite an elegant machine and very practical. When you look at the very large capacity of the Colzer commercial dehumidifier, it is exceptionally cheap, costing about the same as machines with half the capacity. It’s easy to use with an intuitive, full function control panel.
3. Dri-Eaz LGR 7000XLi 29-gallon Compact Portable Refrigerant Dehumidifier
As is so often the case, the very best is going to be the most expensive. So the Dri-Eaz LGR 7000XLi is far from cheap. It’s way more expensive than any of the other commercial dehumidifiers featured in this review. Though it is probably the most indestructible, making it a firm favorite amongst contractors who require a reliable machine that can be bashed about a bit and come out the other end working perfectly.
The polyethylene housing is so tough, that Dri-Eaz offer a lifetime warranty on the exterior housing of this dehumidifier. Along with this, it’s incredibly powerful with a bunch of useful features.
Generally rated for 130 pints per day, it will handle 235 pints at maximum saturation. This combined with an incredibly powerful 325 CFM fan and a pump that can’t be beat. Continuous drainage is no problem, even if the water requires a lift of more than 10’.
All this durability and power comes with a weight disadvantage. Then again no commercial dehumidifier is lightweight or compact. So the weight tag of 107 pounds is to be expected. The size (20” 20” X 33.5”) also comes as no surprise. It’s made wonderfully portable, thanks to large rear wheels and a handle that allows you to tilt and push or pull the Dri-Eaz dehumidifier with a perfect center of gravity.
It has digital controls to rival the very best and an optional Hydro Track Remote Monitoring System. Sold separately, this wireless remote system allows you to monitor the system anywhere. Sensors for humidity and temperature, at both the air inlet and outlet, allow for the best humidity and temperature control. It can also accommodate a ducting for the exhaust heat.
Many may feel that the Dri-Eaz LGR 7000Xli is simply too expensive to be considered. Though if you require the best heavy-duty commercial dehumidifier, you won’t easily beat this one. Lugging it about is made easy with huge wheels and an excellent handle. Though, best of all, it will cope with the rigors of daily transporting for those who require this kind of durability. The warranty also suggests a good deal of confidence in the product. It has a 1-year general warranty, a very impressive 6-years for the compressor, and an even more impressive lifetime warranty on the body.
4. AlorAir Storm Elite Commercial Dehumidifier
The AlorAir Storm Elite industrial dehumidifier is a step up from the AlorAir commercial dehumidifier. Not only does this model have a more rugged design, it has a much larger capacity.
Capable of removing 125 pints per day (80°F @ 60% RH) and 270 pints per day at maximum saturation, this is a large capacity commercial dehumidifier for certain. To this end, it is also a large and heavy machine, 24.2” X 24” X 36.6”, weighing 110 LBS. To assist in moving this heavy dehumidifier, you have the advantage of large wheels and soft-grip handle.
Like the other AlorAir model in this review, the Storm Elite has an ultra-durable epoxy powder coated coil and a heavy-duty condensate pump. This means it has very reliable continuous drainage under any circumstances. A memory function allows it reset in the event of a power failure.
The smart digital controls are wonderful. You have all the automated functions, like defrost, timer and continuous run with sensors, in an easy to follow format. Service is made as simple as possible. The guys at AlorAir claim that it will take only 10-seconds to access the internal service components.
As a tough and capable commercial dehumidifier, the AlorAir is a real gem. For such a competent, large capacity machine, it is very reasonably priced and is certainly durable enough to be a dependable work horse. The warranty is good too: 1-year general warranty, 3-years on the refrigeration components, and 5-years for the compressor.
How to Choose a Good Dehumidifier | What to Look For
Depending on where you live, humidity can be a greater or lesser problem. Too much humidity in the air will cause your woodwork to rot, metal to rust, and increase the growth of mold and mildew. Odors are another related issue. Humidity can also affect the reliability and lifespan of electric equipment.
Mold spores are of particular concern for many people considering a dehumidifier. Allergies related to mold and dust mites are common. Furthermore, certain types of mold can be a general health risk.
Humidity may also cause plaster to degrade and paint to flake. So the importance of using a top quality dehumidifier for your environment, is quite obvious.
What Size Dehumidifier Do You Need?
The first thing to consider, when looking for a dehumidifier, is its capabilities which will mostly be related to the size of the dehumidifier.
The smallest (mini-capacity) dehumidifiers remove approximately 12 – 25 ounces of moisture per day. Whilst these dehumidifiers are not capable of maintaining the best relative humidity in for a large area, they are great for smaller bathrooms and crawl spaces.
Small-capacity dehumidifiers (20 – 30 pints moisture removal per day) can handle small to mid-sized rooms. These dehumidifiers are great for areas that are damp but not wet.
Medium-capacity dehumidifiers remove around 40 – 50 pints of moisture per day. Whilst these dehumidifiers are also designed more for damp conditions and not wet areas, they will handle a large space.
Large-capacity dehumidifiers are designed for both damp and wet conditions, for large areas. These will be capable of removing anything from 70 – over 200 pints per day. The larger machines can be bulky and heavy, weighing upwards of 100 pounds.
Generally, a larger dehumidifier will have a larger tank. However, this will vary between he different models and brands. A tank can be anything from 10 – 75 pints. A smaller tank will obviously need to be emptied more regularly, but won’t be as heavy as a large one. So it’s really about personal preference which tank size is going to your best option.
Some dehumidifiers, particularly large-capacity models, don’t use a tank at all. They have a drain hose that you can run to a suitable drainage outlet. While this means that you have a bit more work to do when installing the dehumidifier, you’ll never need to worry about emptying the tank.
While most continuous drain dehumidifiers use a gravity feed for the drain pipe, some will use a pump to lift the water to a drainage point higher than the point where the pipe is fitted to the machine. Many of the smaller machines offer the option of using a tank or drain pipe.
Best to go for dehumidifiers that have automated controls. Most will measure the relative humidity in the air and adjust accordingly. You will usually be able to set the level of dehumidification that you require. So you can choose to have normal, dry, or very air. These dehumidifiers will usually have a timer so that you can set cycle times.
Dehumidifiers can be quite noisy. So, depending on where you use it, you may want to check on the noise level for the dehumidifier that you choose. Larger models can have noise levels of between 55 and 68dB. At the top end of this scale, the noise can be a louder than a normal speaking voice. This would obviously not be ideal for a bedroom. Though some are designed to be exceptionally quiet and should not disturb you when asleep.