Type in, “dehumidifiers for hydroponic systems“, and you’re bound to be bombarded with an assortment of devices to choose from.
The problem – not all dehumidifiers are made equal.
False advertising, faulty and ineffective products – all part and parcel of buying products nowadays, especially online.
It’s risky business, that’s why we here at Climatebiz want to give you (our readers) the best possible chance of purchasing a dehumidifier that’s truly worthy of your investment.
To do so, we’ve sifted through the vast number of dehumidifiers out there and hand-picked the 10 best ones (at different price points) currently on the market, so that you don’t have to.
What Is A Dehumidifier?
A dehumidifier is an electric or non-electric system that absorbs the humidity out of the air and stores it as water. These devices usually operate within a confined space such as grow rooms, grow tents, basements, bedrooms, bathrooms, etc.
Why Are Dehumidifiers Important For Hydroponic Systems?
In order for you to appreciate the need for a dehumidifier, you need to have a basic understanding of what humidity is.
What Is Humidity?
To put it simply, humidity is the measurement of the presence of water vapor in the air. The more water evaporates in a given area, the more water vapor there will be, and the higher the humidity level.
How Does That Apply To Dehumidifiers For Hydroponic Systems?
Based on the above, it stands to reason that hydroponic systems – particularly in enclosed areas – are more prone to higher humidity levels because of the increased presence of water. Think for a second, about the amount of water present in a Deep Water Culture, Aquaponic, or NFT hydroponic system – it’s quite a lot.
The continual feeding of plants using an aqueous, nutrient solution is bound to give off water vapor, certainly enough to justify the use of a dehumidifier.
What Is The Result Of An Imbalance In Humidity Levels?
Greenhouse Product News put it best – basically, too much humidity in a greenhouse or any indoor area for that matter will cause big trouble. Condensation dripping from ceilings can spread diseases, invite unwanted critters, and promote algae growth.
Other effects include the following:
- Your grow space becomes the perfect environment for bacteria and molds.
- Flowering plants can begin to suffer from bud rot or botrytis.
- Transpiration or exchanging of air between your plants will be affected.
- Your plants will close their stomata, this will clog them up.
- Nutrient uptake will decline.
- Your plant yield will decrease.
How Do I Know If I Need A Dehumidifier For My Hydroponic System?
Warning signs, people. Always look out for warning signs.
Warnings signs that indicate the need for a dehumidifier in your hydroponic system grow space:
- Condensation droplets on the ceiling or walls of your grow space
- Water puddles on your grow space floor (look for signs of algae growth)
- Leaves becoming excessively damp
- Plants will begin to wilt
- Powdery mildew
Top 10 Indoor Dehumidifiers For Hydroponic Systems
hOmeLabs Dehumidifier – Suitable For Grow Rooms
|Area coverage||4,500 ft2|
|Absorption capacity||50 pints (per day)|
|Water tank size||12.8 pints|
|Item weight||40 lbs|
|Item dimensions||(LxWxH): 15.4 x 11 x 24.3 inches|
They say first impressions count, so let’s start off strong, shall we?
hOmeLabs have come out with a variety of fantastic dehumidifiers suitable for medium to extra large grow rooms.
This particular model, covering 4500 ft2 is perfect for those of you out there looking to cover very big grow spaces.
It comes with a 1.6-gallon water tank and it’s capable of removing up to 50 pints (70 Pint 2012 DOE Standard) from the air per day depending on the size of your room. The device also comes with a number of easy-to-use modes such as auto shut-off, defrost, restart, and turbo mode.
Despite its size and weight, this dehumidifier is nice and portable. This is thanks to its built-in wheels and handles.
Lastly, for those of you who are energy conscious, you’ll be pleased to know that the 50-pint model joined the ranks of Energy Star’s most efficient list for 2020!
- 0.8-gallon water tank capacity, and removes up to 22 pints of moisture from the air per day.
- Covers a large area – 1500 ft2
- Touch panel control with restart, auto shut off, and turbo mode.
- Energy Star certified
- You won’t be able to replace the plastic base.
Inofia 30 Pint Dehumidifier – Suitable For Grow Rooms
|Area of efficiency||1,056 ft2|
|Absorption capacity||30 pints (per day)|
|Water tank size||4 pints|
|Item weight||24.9 lbs|
|Item dimensions||(LxWxH): 12.2 x 8.2 x 17.3 inches|
This device by Inofia is truly one of the best dehumidifiers for hydroponic systems.
Its absorption capacity of 30 pints of moisture per day in spaces of up to 1,056 ft2 makes it the perfect option for those of you looking to control humidity levels in a large-sized grow room.
One of the standout features of this small dehumidifier is its auto shut-off function. When its 4-Pint (0.5 Gal.) water reservoir is full, it’ll let out an audible alert for you to empty it. Alternatively, you can make use of the accompanying drain hose (6.56-ft) for it to self-drain via gravity.
- Built-in humidistat
- Quiet (sleep mode)
- Automatic/Manual drainage
- Auto error-detection
- Water tank could be bigger
Pro Breeze Electric Mini Dehumidifier – Suitable For Grow Tents
|Area of efficiency||250 ft2|
|Absorption capacity||1.12 pints (per day)|
|Water tank size||3.2 pints|
|Item weight||5.16 lbs|
|Item dimensions||(LxWxH): 6.6 x 9 x 12.69 inches|
Looking for a smaller dehumidifier that won’t be hit your utility bill too hard? This electric mini dehumidifier by Pro Breeze uses thermoelectric (Peltier) cooling that is energy-efficient.
It isn’t terribly noisy either. If you have your grow area within earshot of your living space, you’ll be able to run it throughout the day and night without it causing much of a disturbance.
Lightweight and portable, you’ll be able to move it around your grow space without much hassle.
What’s more, this little guy punches above his weight, with one very popular comment on Amazon stating, “I have this guy in a room almost double the recommended size but it still makes an impact to [sic] the humidity levels.”
- Compact & portable
- Auto shut-off
- Doesn’t operate well below 41F temperature.
SEAVON Dehumidifier – Suitable For Grow Tents
|Area of efficiency||240 ft2|
|Absorption capacity||0.75 pints (per day)|
|Water tank size||1.68 pints|
|Item weight||2.55 lbs|
|Item dimensions||(LxWxH): 6.2 x 4.9 x 10.1 inches|
Dehumidifiers for hydroponic systems don’t need to be expensive to be effective. This compact dehumidifier from SEAVON proves just that. It’s easily one of the best, most affordable dehumidifiers on the market for those of you looking for a more budget-friendly option.
Its size and effectiveness make it suitable for 5×5 grow tent spaces. What’s more, you’ll be able to place your tents in close proximity to your living space thanks to its use of ultra-quiet Peltier technology – noise is below 35dB
When it comes to energy usage, this little guy only uses 0.54kW of electricity after running for 24 hours, so you won’t need to split hairs about your utility bill spiking.
Lastly, SEAVON dehumidifiers come with a 60-day free exchange and refund service, along with a 1-year warranty.
- Compact and lightweight
- Auto-shutdown when the water tank is full
- Doesn’t work when the outer temperature is below 41oF
- Can’t be used in areas with high humidity
Colaze Mini Dehumidifier – Suitable For Grow Tents/Small Grow Rooms
|Area of efficiency||480 ft2|
|Absorption capacity||1.69 pints (per day)|
|Water tank size||3.8 pints|
|Item weight||5.08 lbs|
|Item dimensions||(LxWxH): 14.21 x 7.87 x 7.8 inches|
This compact and portable device by Colaze is a great dehumidifier for hydroponic systems in grow tents or small rooms.
It features an auto-shutoff function – when the water reaches its highest point, the RGB light turns red and the dehumidifier shuts off. Additionally, the dehumidifier comes with overcurrent protection, so when the current exceeds the built-in 4A current, it’ll stop working to avoid damage.
For those of you looking for that something extra, this device doubles up as a night light. It loops 7 different lights automatically which we’re sure your little green friends will enjoy!
- Doubles up as night light
- Overcurrent protection
- May not be powerful enough for some
Ivation Mid-Size Dehumidifier – Suitable For Grow Tents
|Area of efficiency||168.9 ft2|
|Absorption capacity||1.25 pints (per day)|
|Water tank size||3.31 pints|
|Item weight||4.4 lbs|
|Item dimensions||(LxWxH): 8.6 x 6.3 x 11.8 inches|
The key to this dehumidifier’s superior performance lies in its use of Peltier technology. Ivation’s mid-size dehumidifier.
Peltier technology works with almost no moving parts. As such, Ivation has managed to design a dehumidifier that’s small, lightweight, low on energy, yet powerful and effective.
What’s more, this technology ensures that your device will run quietly, making it the perfect dehumidifier for hydroponic systems within your living space.
- Silent operation through Peltier Technology.
- Low energy consumption
- Could do with a timer function
Vremi Dehumidifier – Suitable For Grow Rooms
|Area of efficiency||1,500 ft2|
|Absorption capacity||22 pints (per day)|
|Water tank size||6.4 pints|
|Item weight||33.1 lbs|
|Item dimensions||(LxWxH): 16.1 x 10.4 x 19.9 inches|
This dehumidifier from Vremi sports a sleek, minimalist design along with built-in wheels and handles that make it easy to manoeuver around your grow space.
An absorption capacity of 22 pints per day across a maximum area of 1,500 ft2, makes this dehumidifier from Vremi tailor-made for large grow rooms.
It sports a sleek, minimalist design along with built-in wheels and handles that allow you to easily manoeuver it around your grow space.
For those of you who are maintenance averse, you’ll be pleased to know that the filter only requires cleaning once a month.
Lastly, this dehumidifier comes with a drain hose outlet (hot note included).
- Perfect for large spaces
- Energy Star certified
- Drain hose outlet
- Auto shut-off and defrost
Waykar Dehumidifier – Suitable For Grow Rooms
|Area of efficiency||2000 ft2|
|Absorption capacity||34 pints (per day)|
|Water tank size||5.28 pints|
|Item weight||28.8 lbs|
|Item dimensions||(LxWxH): 23.3 x 14.2 x 11.5 inches|
This big boy by Waykar covers a space of up to 2000 ft2 and is capable of removing 34 pints of moisture per day.
While it’s a fair bit more expensive than most of our other entries, its features justify the price tag:
- Intelligent control -The device has the ability to run in accordance with the humidity level that you desire. You can set and forget your humidity level. It will sense your rooms humidity and control dehumidification to maintain your pre-set levels.
- Auto drain- The unit comes with a 6.56 feet drain hose that you can attach to the drainpipe hole to continually drain dehumidified water.
Support-wise, all of Waykar’s dehumidifiers come with 30-Day money-back guarantees. They also provide a 1-year warranty with the option to extend to a 2nd-year.
- Intelligent control
- Auto drain
- Solid warranty
hysure Dehumidifier – Suitable For Small Grow Tents
|Area of efficiency||215 ft2|
|Absorption capacity||0.63 pints (per day)|
|Water tank size||1.47 pints|
|Item weight||2.68 lbs|
|Item dimensions||(LxWxH): 6.42 x 4.21 x 10.51 inches|
hysure’s ultra-quiet (33dB) and energy-saving dehumidifier is perfect for those of you in need of an unobtrusive dehumidifying unit that won’t hit your wallet too hard.
It uses no chemical substances, making it an environmentally friendly dehumidifier for hydroponic systems.
Finally, this dehumidifier is backed by a 30-day money-back guarantee, a 24-month warranty, and professional customer support.
- Compact and portable
- Energy saving
- Money-back guarantee and warranty
- May be too small for some
Eva-dry E-500 Renewable Mini Dehumidifier – Suitable For Grow Tent
|Area coverage||Up to 500 ft2|
|Absorption capacity||0.5 pints|
|Water tank capacity||N/A|
|Item weight||1.8 lbs|
|Item dimensions||(LxWxH): 5.5 x 2.5 x 5.5 inches|
We at Climatebiz place great value on products that are both efficient and eco-friendly. That’s why this mini dehumidifier from Eva- Dry is a must on our list.
This compact, portable device uses non-toxic crystallized silica gel technology to quickly and efficiently absorb up to 6 to 8 oz of moisture from the air, without any troublesome leaks or spills.
Additionally, it doesn’t require cords, batteries, or a constant supply of electricity to operate, making it very energy-efficient.
Instead, when the beads turn from orange (dry) to green (wet), you know it’s time to dry up the silica gels in any power strip until they change their color again.
ATTENTION: These units can heat up when plugged in. The safest way to recharge them is to use an extension cord and place them on a concrete floor or on another non-combustible area.
- Very cost-effective
- 10-year lifespan
- No batteries or cords
- Only suitable for very small spaces ( 2×2 grow tents)
- Can overheat when plugged in.
Whether you’re looking for a compact, portable dehumidifier (Ivation) or an absolute juggernaut of a device like the hOmeLabs dehumidifier, we’re more than confident that our top 10 list of dehumidifiers for hydroponic systems has something just for you.
If you do happen to have experience with the above dehumidifiers – or any other ones for that matter – feel free to share your experiences and recommendations with us in the comment section below!