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When you grow marijuana, the first three things that you need to consider are that you are giving your plants proper air, water and lighting. However, once these three are sorted, you’ve got to look beyond the basics and start looking at improving the efficiency of your overall process of growth. Growing indoors gives you the advantage of tweaking climatic factors and humidity is one such element that can help improve the quality of your plants significantly. Over the course of this article, we shall be looking at the best dehumidifiers for grow tents and grow rooms which can help your cannabis plants grow in a better manner.
In addition to reviewing the best options that you have when it comes to buying dehumidifiers, we shall also attempt to understand the role of humidity in the plant’s life cycle and how dehumidifiers can help you improve your plant’s growth as well as overall produce. We shall also be looking at some factors that you need to consider before you buy the dehumidifier of your choice, as well as answer some frequently asked questions about these devices. Before all of this, let us first begin with the most basic question of it all.
What is Humidity and Why is it Important to the Plants?
Understanding humidity can get quite complex if we get in the technical details. However, for simplifying our understanding, humidity can just be understood as the amount of moisture content present in the air. Humidity is beneficial for the growth of marijuana plant in different ways during the different phases of the plant’s life cycle. When the plant is young and still growing towards maturity, it requires a high humidity so that it can easily absorb water from the air and need not put pressure on its roots.
However, once the plant matures, growers need to ensure that the humidity levels are lowered because a mature plant is one which is preparing to bloom or is already producing flowers. At this stage in its life cycle, the plant needs lots of nutrients. Nutrients are mixed with water and are provided via the soil – hence the roots are the ones which absorb these nutrient-rich waters. Hence the humidity needs to be lowered with the help of dehumidifiers and this ensures that the plants are not taking in water from the moisture but from the roots instead – thereby providing a smooth flow of nutrients.
Top 10 Best Dehumidifiers for Grow Tents and Grow Rooms
Now that you know what dehumidifiers are and why they play such a major role in the life cycle of the marijuana plants, let us cut straight to looking at some of the best dehumidifiers for grow tents which you can buy off the internet right now in just a matter of a few clicks:
1. Pohl Schmitt Electric Dehumidifiers
- Capacity: 500 ml
- Size: 11.22 x 6.34 x 5.28 inches
- Warranty: 1 year
When it comes to grow rooms and grow tents, finding a high-quality dehumidifier is a necessity, especially when you are dealing with sensitive plants like cannabis. The Pohl Schmitt Electric Dehumidifiers is one of the most popular options that you can considerably get your hands on.
This powerful and high-efficiency and dehumidifier is everything your grow room needs to maintain static environmental settings for optimal yield and quality of the plants. The product offers up to 2200 cubic feet coverage, which is fairly amazing for the price you pay.
It is programmed to seamlessly remove up to 10 ounces of water per day from the room it is kept in. This compact humidifier is designed to meet all your needs. You can seamlessly use this to promote a better environment and get rid of the excess humidity that most people complain about.
Despite the 500 ml capacity, this dehumidifier is extremely lightweight and weighs 17 ounces, which is comparatively a lot lesser as opposed to the other options. This enables you to create an environment with optimal moisture settings.
One unique feature of this product is that it’s integrated with the Peltier technology that enables smoother operations of the product without any complications. Aside from the air around, it also keeps the furniture and clothes fresh instead of them feeling sticky all the time.
Last but not the least; you get superior performance with minimal energy consumption, which means that you wouldn’t have to worry about longer power bills by the end of each month.
- Compact and portable design
- Lightweight yet durable construction
- Can get rid of 10 ounces of water per day
- Integrated with Peltier technology
- Less power consumption
- Not ideal for larger spaces
2. Letsport Upgraded 68oz Dehumidifier
- Capacity: 4.3 pounds
- Size: 10 x 7 x 15 inches
- Warranty: 1 year
If you have a small grow room that needs optimal humidity and a controlled environmental setting, the Letsport Upgraded 68oz Dehumidifier is another compact yet modern dehumidifier that you can consider investing in.
Unlike all the other options, this one features a sleek design with a well-curated control panel and other functions that make this a viable option for you to consider looking into. The upgraded design and function of this product enable you to keep the humidity levels below 35%.
The product is designed with a 68 oz. water tank and runs on the efficient Peltier technology that keeps your machine working fine for extended periods. Also, the product is ideal for rooms measuring between 450 to 480 sq. ft.
Since this dehumidifier functions without a compressor, you wouldn’t have to worry about the constant whirring noise that many other similar products make. Also, it comes with a UL-certified adapter for superior functions.
Aside from the low energy consumption, the product also comes with the much-coveted automatic shut-off feature that allows you to save a lot on power bills. The one-button control also makes the work a lot easier, meaning that you wouldn’t have to stand there confused about what to do next.
The adapter that you get with the product is flame retardant, making it safer for prolonged usage. Also, you do need to be mindful of the settings based on the environmental settings around you, which further makes them a viable purchase for you to look into.
- Durable and modern design
- Single-button control
- Compressor-less functions
- Automatic shut off function
- Flame retardant adapter
- Doesn’t offer optimal coverage
3. VIVOSUN Electric Mini Dehumidifier
- Capacity: 2200 ml
- Size: 16.2 x 11 x 6.9 inches
- Warranty: 1 year
When talking about high-quality dehumidifiers for grow rooms and grow tents, there is nothing that beats VIVOSUN Electric Mini Dehumidifier. The brand has been around for quite some time now and offers a range of products for users to choose from.
The compact and portable design of this mini dehumidifier is what makes it a superlative purchase, especially if you are short on a budget. This is one of the few options in the market that come with external handles that make it easier for you to move around.
As for the capacity, despite being a mini version, it comes with a 2200 ml capacity and the tank easily slides out to enable easier cleaning results. Also, it can absorb and eliminate up to 700 ml of moisture every day, which is ideal to keep your grow room in the best condition.
The exterior of the machine comes with touchscreen control that enables you to make maximum use out of the product without any complications. The LED indicator light showcases when the product is switched on and when it isn’t.
Also, the whisper-quiet technology with air refresh function with the Peltier technology cooling keeps the surroundings in the best condition to ensure that your plants grow without any complications.
The dehumidifier comes with the much-needed automatic shut-off function that prevents unnecessary power consumption when the product isn’t in use. Also, you get the timer function with this that enables you to set the timer and forget the rest.
- Backed with Peltier technology
- Large water retaining capacity
- Comes with handles for easier portability
- Touch control panel
- LED light indicator
- Won’t be ideal for outdoor grow tents
4. Yyrijop Dehumidifier
- Capacity: 2000 ml
- Size: 16.02 x 10.43 x 7.2 inches
- Warranty: 1 year
It isn’t mandatory that you only have to be reliant on the more expensive dehumidifiers in the market. If you are on a budget and want a good-quality and large dehumidifier under $100, the Yyrijop Dehumidifier is one of the best picks.
The product is available in two size variants that you can choose from depending on your needs inside the grow room. The product is designed for high-efficiency dehumidification, which means that you can get the maximum humidity out of the room without complications.
The dehumidifier is designed with the ultimate Peltier operation with whisper-quiet technology that functions at 37 dB, allowing you to run day and night without any complications. Also, the product is backed with the coveted automatic shut-off function that allows you to save a lot on power bills.
The multi-application area of the product allows you to place it anywhere that you want it to work and its functions aren’t just limited to the grow tent or grow rooms, which is one of the primary reasons why it is such a popular option for you to get your hands on.
The energy-saving function of this product consumes only 40W per hour, which is a lot less as compared to the functions that you see on this product. This makes it an environmentally friendly purchase that you wouldn’t regret splurging out on.
The product comes with a simple and easy-to-use interface with a single button that allows you to program it according to your needs. The space-saving design makes up for all you need accordingly as well. Also, it is quite lightweight and weighs 4.8 lbs.
- Lightweight and portable design
- Low noise function
- Backed with Peltier technology
- Low power consumption
- Available in two size variants
- Doesn’t function across a larger space
5. SEAVON Dehumidifier
- Capacity: 800 ml
- Size: 10.04 x 6.42 x 4.57 inches
- Warranty: 1 year
With so many different types of dehumidifiers available in the market, the SEAVON Dehumidifier is an option worth considering, especially if you have a smaller grow tent or grow room around. The best thing about this product is that it is a highly efficient dehumidifier that you can get your hands on.
The small product comes with a maximum capacity of 800ml, which might not seem like a lot but is more than enough for a grow tent. Not only does it get rid of the excess humidity, but the product also cleans the air surrounding you, which is a benefit.
The small and compact dehumidifier uses the coveted Peltier technology, which means that you wouldn’t have to complain about the constant buzzing or whirring noise. It produces just around 30-35 dB noise and nothing that will annoy you.
Also, the mini dehumidifier comes with the smart power automatic shut-off function that switches itself off when it’s not in need, saving power. You can also avail of the clock assistance with the product, which is another benefit.
- Small and compact design
- Removes up to 300ml water per day
- Backed with Peltier technology
- Automatic shut off function
- Round the clock assistance
- Power cord gets hot easily
- Capacity: 8oz
- Size: 6.5 x 8.5 x 5.3 inches
- Warranty: One-year manufacturer warranty
While the one that we saw above was a great dehumidifier for a grow tent, this one right here is one of the best dehumidifiers for grow tents. A perfect fit for a 4×4 grow tent, the Eva-dry Edv-1100 is a nice little dehumidifier for growers who want a device that fits in their grow tent and makes sure all the moisture is removed off the air inside it. Portability is one of its best features as it is tiny and lightweight – weighing in close to just one pound!
This dehumidifier comes with a special “Peltier Technology” which makes sure that it produces minimal sound. Many growers complain of dehumidifiers being quite loud. However, this one takes care of that problem really well. Coming to its actual feature of dehumidification – this device has a capacity of 8oz and also consumes very little electricity while operating. There’s an indicator which will tell you when the bucket is full and needs to be emptied. Moisture, molds, mildew and odors – all of them are taken care by this Eva-Dry dehumidifier. This one is a good fit for areas up to 1100sq.ft. but we recommend using it for much smaller areas because that’s where it performs the best in.
- Makes very little noise
- Easy to operate – simply plug and play
- Very light in weight and easy to move around
- Removes moisture, molds and mildew with ease
- Some growers might want a larger capacity
- Capacity: About 6-8 oz
- Size: 5.5 x 2.5 x 5.5 inches
- Warranty: 5-year manufacturer’s warranty against defects
Another product from Eva-Dry on our list of the best dehumidifiers for grow tents and grow rooms – but this one’s a little different than all that you’ve seen so far. All the dehumidifiers that we’ve seen so far on our list are electric in nature and need to be plugged in to a power source to function. This one, however, is non-electrical in nature. This dehumidifier from Eva-Dry is one of the best dehumidifiers for grow tents and functions on a renewable silica gel technology – meaning you need not put any power source into it.
There’s an indicator window on this dehumidifier which eventually turns from orange to green over time. This means the capacity is full. Then you need to plug it to a well ventilated area for about 12 to 14 hours and then you can use it again. This dehumidifier can last growers for up to 10 years, as claimed by the company. Out of those 10 years, there are five years that you can get a manufacturer’s warranty against defects – which is also pretty cool. This is a dehumidifier meant only for small or very small places and can cover about 500cubic feet of area. It is simple and easy to operate, there’s no noise and there are no spills as well.
- Completely non-toxic
- Simple and easy operation
- Portable and can be carried around with ease – best suited for grow tents
- Can be kept in small spaces
- Growers have reported that larger beads take a much longer time to dry when plugged in
- Capacity: Capacity not specified but carries 750gm beads
- Size: 4.5 x 4.5 x 6.5 inches
- Warranty: Details not specified
When it comes to renewable-use dehumidifiers, this Dry-Packs dehumidifier just stands out because of its unique build and style. This metallic dehumidifier carries 750gms of beads which make it a great option to dehumidify small spaces such as vaults and grow tents. You can also use it in tool bags, laptop bags etc to keep your devices safe from humidity. The manufacturer claims it can offer you a lifetime of dehumidification.
What is the best feature about it, which makes it one of the best dehumidifiers for grow tents of about 2×2 ft or smaller nursery units is that it is very small – so small that you can keep it practically anywhere without causing much of a hassle. Once the moisture is fully captured the beads turn green and then you need to recharge it for about 2-4 hours. All in all most users who have used it have found it to be pretty effective for small spaces.
- Small in size – great for small grow tents
- Can also be used in bags, safes and cabinets
- Lightweight and easy to move around
- Charges fast and can carry quite a bit of moisture
- The manufacturer needs to make more details available about the product
9. Frigidaire FAD505DWD Dehumidifier
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- Capacity: 50 pints
- Size: 24.65 inches x 11.32 inches x 16.08 inches
- Warranty: Full 1-year parts & labor warranty, limited 5-year sealed system warranty.
For those looking for a really great humidifier – one of the best humidifiers for grow rooms, the Frigidaire FAD505DWD ticks all your boxes! This is a great humidifier as it can remove as much as 50 pints of moisture from the air in the room. This makes it suitable for a large room which can be as big as 1500 to 3000 sq. ft. Moreover, for those with a larger need, there’s a 70 pint variant of the same which is also available. The moisture removal capacity of this dehumidifier has been much appreciated over the years. Growers have found this to be one of the best devices to help ensure that your grow room is maintained well.
The bucket that is a part of this dehumidifier has a capacity of two gallons and there’s a full-tank alert system which will notify you when the tank is about to get full so that you can throw away the water. This dehumidifier from Frigidaire is one of the best dehumidifiers for grow rooms – especially for those growers who not only want to take care of the moisture in their room, but also the molds and mildew in the air. Moreover, it also comes with a washable mesh filter which is easy to clean as well as maintain. Finally, there’s a 5 year warranty on the entire device along with a one-year warranty on parts and labor.
- Removes 50 pints of water from the air – great for grow rooms
- Perfect fit for rooms between 1500 to 3000 sq.ft.
- Comes with a full-tank alert system which will let you know when the bucket is about to be full
- Filter is easy to clean
- 5 year warranty
- Loud noise when the compressor begins to age/fail
- Thermal protection could be improved
10. HomeLabs Small Dehumidifier
- Capacity: 9 ounces / 250 ml per day
- Size: 6.5 x 5.3 x 8.5 inches
- Warranty: Limited 2-year manufacturer warranty
HomeLabs is a trusted brand name when it comes to household consumer electronics products. This is one of the best dehumidifiers in the markets for growers who are looking forward to buying a small and lightweight device which they can keep inside their grow tent to ensure that their marijuana plants are getting an optimum environmental condition for growth. The tank in this dehumidifier has a capacity of 18 ounces (about 500ml) while the dehumidifier can extract moisture up to 9 ounces per day – meaning you have to dispose the water once every two days (if you use continuously).
Not only can you use this dehumidifier inside your grow tents, but you can also use it in your kitchens and bathrooms where you might want to ensure that there’s no moisture in the air. This is perfect for rooms up to 150sq.ft. There’s an auto shut-off function on this dehumidifier which will automatically turn off the device and glow a light on the top which indicates to you that the tank is full. This is a very lightweight dehumidifier too, as it weighs just about 2 pounds.
- Tank capacity of 18 ounces, can dehumidify 9 ounces a day – great for grow tents
- Lightweight and hence easy to move around and carry
- Easy cleaning
- Warranty of two years
- Auto shut-off ensures the device does not get damaged and you know when to empty the tank
- Not suitable for large areas/rooms, but one of the best dehumidifiers for grow tents
Ultimate Buyer’s Guide to Dehumidifiers – How to Buy The Best Dehumidifier for Growing Marijuana?
Now that you know which the best options are when it comes to buying a dehumidifier for growing marijuana, you must also know what all to look for before you make a final purchase. These are some of the factors that you need to mind and you can use these points as a checklist to ensure that you are getting only the best quality products which suit your needs.
The first and foremost thing that you need to keep in your mind is that you must always make sure that the dehumidifier you are buying is big enough for the area in which you are growing. Don’t buy a small dehumidifier for a big grow room or a big dehumidifier for a small grow tent – this needs to be ensured that the size of your growing are and the area covered by your dehumidifier match well. Then there’s also the capacity of the tank as well as the dehumidification capacity – these are two different things that people often confuse. The tank capacity is generally larger while the dehumidification capacity is the amount of water that the dehumidifier can take out of the air in a day.
Always ensure that all safety standards are followed and there’s no risk of fire in the dehumidifier of your choice. Noise is another concern as dehumidifiers tend to make some noise (getting a non electric/renewable dehumidifier will solve this problem but they’re usually not as powerful as the regular electric dehumidifiers so there’s that). One more thing that you must know is that filters of a dehumidifier need frequent cleaning – make sure that the dehumidifier you are getting is easy to clean and maintain. Also check if you are getting any extra filters along with the device as they are always quite helpful. Your dehumidifier also needs to be portable enough to easily be moved around. The warranty that you get also matters – always ensure that you are getting the maximum possible warranty.
Frequently Asked Questions (FAQs) About Dehumidifiers
Now that you know which are some of the top options that you have in the markets when it comes to buying the best dehumidifiers for grow rooms and grow tents, let us look at some of the most commonly and frequently asked questions about dehumidifiers. These are some doubts that you might be having as well so do go through these answers to get a clearer picture:
1. Is it compulsory to own a dehumidifier to grow marijuana?
No, you can grow a marijuana plant without using a dehumidifier as well. However, if you own a dehumidifier it will help you ensure that your plants are growing in a much better way. This is especially important if you are growing weed in a tropical climate where humidity is naturally very high and there’s a lot of naturally occurring moisture in your air which can be harmful for your plants.
2. What happens if there’s high humidity?
While humidity is good for the growth of marijuana plants to some extent, having too much humidity would mean you risk rupturing certain cells and portions of your plants because they will have more water than they could carry! Having high humidity also makes it harder to have the nutrients travel up the plant’s body via the roots because most of the moisture the plant needs, it gets from the environment. If the humidity was low, then the plant would rely on the roots and therefore absorb the nutrients along with the moisture.
3. Is very low humidity bad for the plants?
Yes, very low humidity is also bad for the plants because that would mean you would have to constantly provide water via the roots which will add undue pressure on the roots as they will keep exerting themselves. This could be avoided in the early stages of plant’s growth cycle by ensuring the humidity levels aren’t very low.
4. How big should my dehumidifier be?
This depends solely upon your growth setup. If you are using a grow tent that is too big – then you need to get a dehumidifier which can dehumidify a larger volume of air. However, if you’re using a small grow tent then you would be ok using a smaller dehumidifier too. The best dehumidifiers for grow rooms need to be more powerful and the biggest in size because it is easier to dehumidify a tent compared to dehumidifying an entire room.
5. Is it legal to use dehumidifiers to grow marijuana?
While using dehumidifiers is totally legal in any case, you might end up having some legal troubles if you are growing marijuana in a region where it is illegal to grow weed. Make sure you’ve confirmed it with your local law enforcement agencies that growing weed is allowed in your area – and that you are growing the permissible quantity of weed as well.
6. How much do dehumidifiers for growing marijuana usually cost?
Dehumidifiers are priced in differently based on their build and the kind of dehumidification that they offer. The most basic ones are the silica-gel based dehumidifiers which are just bags that can be kept in a place which suck in the moisture. These are generally the cheapest and cost under $25 – while there are others which use a more mechanical method for dehumidification, which can go as high as North of $100. However, an average price point for getting small-sized dehumidifiers for growing marijuana plants indoors is somewhere between $40 to $75. The price might vary depending upon the dehumidification process and the brand but this is the general price range.
7. At what stage of growth do plants need higher humidity levels?
Plants generally require higher humidity levels during the first half of their growth cycle. This is because during the second half, plants need a higher nutrient intake as the flowers bloom in the second phase. Nutrients go up the plants via the roots and when there is enough moisture in the air around the plants, they don’t take up as much water from the roots as they ought to. Hence, the need for using a dehumidifier is much greater during the later half of the growth cycle, which makes sure that the plants are growing at an appropriate pace.
8. Are there any other uses for dehumidifiers apart from growing plants?
Dehumidifiers are a great thing to have when you are growing plants indoors. They ensure that the plants don’t get oversaturated with water content – while also making sure that all the nutrients are taken up via the roots. However, there’s more to dehumidifiers than using them just for growing plants. They can be used for a better sleep in humid conditions, they can be used for kitchens and cabinets, where humidity might end up damaging things, particularly perishable things. They are also a good item to use in smaller bathrooms, which ensure that the humidity levels in there are minimized faster.
9. Are silica-gel based dehumidifiers as good as the mechanical ones?
Silica-gel based dehumidifiers are generally preferred by those people who wish to use them in a smaller area. These dehumidifiers work really well in kitchens, under the sinks, and in closets – where you want to make sure humidity doesn’t have a damaging effect on perishable items and on clothes/etc. Furthermore, these are also well-suited to be used in bathrooms, as pointed out in the FAQ above. Mechanical dehumidifiers are typically more effective for larger areas – especially when you plan on dehumidifying a room (or basically anything larger than a small bathroom). If you are planning on growing more than 2 marijuana plants at a time, we recommend going for these mechanical ones.
10. Where to buy the best dehumidifiers for growing marijuana?
Dehumidifiers can be purchase at pretty much every major departmental store across the US. You can easily find them in the markets and get them. They aren’t even a costly purchase. However, if you are looking for a specific model or are planning on getting a particular feature – we suggest you browse through Amazon once and buy from there. Not only do you get a wider range of products on the Amazon web store, but you also get much better deals and discounts there – you also get a much better returns policy.
We hope that this article helped you find the best dehumidifier for your grow tent or your grow room. Dehumidifiers are something of a luxury in the world of growing weed – they’re an added bonus to ensure your yield is increased and that you get a good quality of marijuana after the process of growth is over. We hope that by this point in the article, you have a fair idea about what to expect from the best dehumidifiers for grow tents and grow rooms and know what all to look in it before you buy it. If there are any more queries and questions or if there’s something you feel we haven’t talked about, do let us know over email or comments and we shall get back to you. Till then..
…Happy Growing! 🙂
I’m an avid gardener and cannabis enthusiast. You can usually find me in my garden caring for my plants or at my computer crafting helpful blogs for my readers.