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Hydroponic systems are one of the best ways to grow indoor plants, especially if you are trying to grow highly sensitive plants like cannabis and other ones. One of the most crucial factors that need maintaining is the humidity and the temperature of the insides of the grow tent. Failing to do so often ends up causing chaos for the individuals, especially when it comes to the proper growth of the plants.
When it comes to hydroponic systems, individuals need to be extremely cautious of the internal temperature. Maintaining the humidity of the hydroponic systems is extremely important, especially when it comes to the proper growth of the plants without any adverse impacts on the same.
Since the internal temperature of the hydroponic systems is crucial for their growth, you must find the correct humidity controllers for the same. This helps maintain the internal temperature and promotes proper growth and prosperity of the plants in the hydroponic system.
If the grow tent doesn’t get a regulated temperature, there are chances that the tent will end up absorbing the necessary moisture from inside the tent without any hassle at all. Moreover, aside from the humidity controllers, the hydroponic system also requires the necessary LED lights and ventilation in the grow tent that can help with the further growth of the plants.
But, with the growing popularity of hydroponic systems in the world, more and more people are now on the lookout for good accessories, hence the availability of humidity controllers have increased by a lot in the market. So, it is not surprising that choosing the right one does become a little tough.
Here, we are going to discuss some of the best humidity controllers that you can get your hands on.
11 Best Humidity Controllers in 2022
From the cheap and affordable ones to the luxurious and expensive ones, there are quite a few humidity controllers that are available in the market. For your convenience, we have sorted out some of the best available options in the market.
1. Inkbird Temperature and Humidity Controller ITC-608T
Inkbird is already a well-established name when it comes to creating hydroponic humidity controllers, but this device takes one major step forward. While you can see many products from Inkbird on our list, all of them are only humidity controllers. Not only is this product a humidity controller, but also doubles up as a temperature controller. This is the ITC-608T, which includes a pre-wired thermostat built into it. You can choose to make use of it either as only a temperature controller, or only a humidity controller, or both at the same time.
Another thing that you must know about this humidity controller is that it is US ETL certificate listed, meaning it is completely safe to use, and has been tested for quality control and checks all safety measures. The device also comes with an anti-skid pad on the back which ensures that it doesn’t slip away. It is very easy to set this up and start using it. This device can be used for brewing products, for greenhouse purposes, or even for those people who wish to provide their pet animals with the right kind of humidity and temperature levels. This is particularly useful for plants such as marijuana which need specific humidity and temperature levels.
The temperature control range is actually quite large here, as it gives you a range of -40F and goes all the way up to 212F. When you look at the kind of humidity levels it can monitor, it supports 5% to 99% RH levels, which makes it ideal. One thing to note here is that while the temperature sensor is waterproof, the same is not true with the humidity sensor, so you might want to make use of it with a little more care.
The best thing about this is that it is a beginner-friendly product, as it comes only with a plug-and-play design. The fact that it has a dual relay output and dual display window makes life easier for the users. You can switch the display units between C and F based on your regional needs. You also get a long 1.5m power cable here, which is great while connecting the device to a power socket. All in all, totally one of the best humidity controllers out there to use while growing marijuana plants.
- Dual relay output ensures both humidity and temperature units can be used at the same time
- Very large range of measurement and control for both temperature as well as humidity
- Beginner friendly and easy to set up and use
- Comes with a very large cable for better connectivity
- Humidity sensor is not waterproof
2. Inkbird ITC-308 Temperature and Humidity Controller
Another popular option worth investing in is the Inkbird ITC-308 Temperature and Humidity Controller. This has gained immense popularity in the market, especially because of the heavy-duty performance at a budget-friendly price.
This is a dual-function item that helps control the temperature as well as the humidity of the hydroponic systems that you put it in. It comes with multiple adjustable and calibration options that make it easier for the users to manage both the temperature and the humidity of the insides.
It doesn’t have very complicated functions, which means that you wouldn’t have to face a lot of time learning about the new functions and the features. Moreover, it comes with simple on and off features with an alarm system to keep an eye out on the optimal levels.
All the sensors in this humidity controller are waterproof that work accurately without any hassle. It is one of the leading functional and highly durable humidity controllers that you can invest your coins on. The probe wire in this measure 6 feet in length, which is more than enough.
One unique feature in this item is the delay protection function that controls the energy output without any further complications. It also comes with multiple modes that enable the users to switch between humidification and dehumidification modes.
The alarm system is highly sensitive and works effortlessly in alerting the users when there is a sudden drop or increase in the settings. The same applies to the setting value for the humidity of the controller as well.
- Multiple modes
- Easy operation
- Sensitive alarm system
- The user manual is highly confusing
3. Titan Controls Saturn Series
Even though the Titan Controls Saturn Series costs a lot, it is perfect for advanced level users who don’t want to compromise on the quality of the temperature and humidity control systems. It can also seamlessly fit in any kind of requirements that your hydroponic system needs.
Titan controls is that one brand that has come out with some of the best lines of controllers needed for hydroponic systems. But, the best thing about this is the fact that they more or less fit everyone’s budget.
This Saturn series controller comes with triple function settings including temperature, humidity, and CO2 calibration, which is a necessity if you are growing highly sensitive plants inside the grow chamber.
The panel of this controller is designed with analog controls, which comes in handy especially when you are looking for functional and durable options. It also comes with options with digital control, if that is something you are more comfortable with.
Another factor about this product that stands out is the 15” remote sensor with photocell, which is highly effective in managing both the nighttime and the daytime settings without any confusion at all. It also comes with fuzzy logic programming.
- Durable analog controls
- Triple function settings
- 15” remote sensor
4. AC Infinity Temperature Humidity Controller
Another product worth highlighting is the AC Infinity Temperature and Humidity Controller. Unlike the other products, this is a multipurpose option that helps control the temperature and the humidity as well. It is also a functional inline fan that ensures optimal air circulation.
The product is specifically designed to ensure proper ventilation of the hydroponic grow rooms, enabling smoother functions and the growth of the plants without any hassle. It is also important to get rid of the excess exhaust odor that several individuals often complain about.
It comes with smart intelligent controls, especially with the humidity programming and fan speed control that manages the temperature and humidity settings inside. It also comes with a separate timer and alarm settings to help the users keep up with the interior settings of the system.
The mixed flow design of this humidity controller is highly functional, especially because it comes with a separate PWM-controlled EC-motor for quite and seamless performance of this item without any issues at all.
The package of this humidity controller is also backed with the corded sensor probe with an AC power plug for a seamless power supply with two duct clamps that are essential for keeping a check on the hardware settings of the controller.
It is quite a budget-friendly option, which means that you wouldn’t have to worry about the quality and the price point. The only downside is the lack of warranty details and proper customer backup, which does pose an issue for the users.
- Dual functions system
- Smart intelligent controls
- Doesn’t come with warranty details
5. DIGITEN DHC101 Digital Humidity Controller
Next on the list is another inexpensive option. We have the DIGITEN DHC101 Digital Humidity Controller. Not only do you spare less money on this product, but you are also assured of the best quality temperature and humidity control with this product.
It comes designed with a large LCD screen that keeps the user updated about the current settings and the humidity levels inside the hydroponic system. It comes with custom icons that are important for keeping up with the working mode of the controller.
The controller is also backed with an easy interface, wherein all you need to do is plug and play and you are all set. You need to follow through two steps and plug and play for the rest of the time, especially depending on your requirements.
This has a plug-and-play transducer design that is ideal for OEM applications and provides accurate and on-point measurements for the users. It comes with a separate humidity correction function, which helps adjust the measuring accuracy of the probe.
The controller is also backed with high and low humidity functions, which is another benefit of this product you wouldn’t regret spending your coins on. In case the insides have higher humidity, the probe also comes with separate sensors for that, which is great.
- Large LCD
- Easy to manage the interface
- Smart detection sensors
- Flimsy sensors
6. WILLHI WH1436H 110V Digital Air Humidity Controller
Discussing the penultimate option on the list, we have the WILLHI WH1436H 110V Digital Air Humidity Controller. For a product that comes with 4.5 stars rating on Amazon, it sure is one of the absolute best options in the market.
Aside from the digital design and the easy user interface, the product is also backed with two separate modes that help maintain the humidity of the hydroponic system. It comes with two interchangeable modes – the humidification and dehumidification modes.
Each of the two controllers comes with a humidity sensor, enabling the users to keep up with the consistent temperature settings inside the grow tent. The cable length is around 3m, which is optimal for almost every hydroponic system that you have.
The controller has been designed in a way that enables the users to plug in and out of the sensor, which again is a positive attribute to this item. It comes with an LCD, which is easy to read and take notes from.
Aside from all these basic functions, the item is also backed with a sensitive alarm function, which means that it keeps its users update if the humidity levels are high or low inside the hydroponic system, which again is pretty great.
In case there is a sudden power cut, the controller immediately saves the last settings to again restore the settings to that when the power comes back. The customers are also assured of 100% satisfaction with the product, especially due to the quality of the item.
- Sensitive humidity alarm
- Easy user interface
- Digital controls are a bit confusing
7. Inkbird Digital Pre-Wired Outlet Dual Stage Humidity Controller
Last on the list we have the Inkbird Digital Pre-Wired Outlet Dual Stage Humidity Controller. Mentioning another product from Inkbird was a necessity, especially because of its functions and the overall design and performance that the users get.
Even this one is programmed with two different modes, the primary humidification, and the dehumidification mode. It also comes with a diversity of humidity controlling range, which is a benefit in itself and allows the users to manage things according to their hydroponic system.
It comes with multiple adjustable settings that enable the users to calibrate the humidity value according to the needs of the users. It is also designed with delay protection for enhanced control output and keeps a check on the current temperature settings of the internal settings of the system.
It does come with a separate alarm system, which is highly beneficial in case the humidity ends up surpassing the lower or the extremely higher limits. It also alerts the users when there is an issue or if the internal temperature or humidity is increasing at an alarming rate.
If you are wondering what kind of hydroponic settings this would work best with, we’d suggest that you try this out for mushrooms, snake cages, tobacco, and even cannabis, if that is something you are interested in.
- Multiple modes
- Delay protection for enhanced control
- Alarm system
- Not the most durable option
8. briidea Humidity Controller
Although quite underrated, the brand and the quality of the product make it an option worth considering. This is a multifunctional humidity controller, which means that you wouldn’t just get the humidity adjustment function but a few other important ones too.
The device is integrated with humidification and dehumidification mode, along with manual and automatic mode with an alarm system to ensure that you get the ideal settings without any complaints. Also, the device comes with an automatic shut-off feature to turn down the device when not in use.
The use of the high-end superior chipset in the humidity controller ensures that the life sensor in the device lasts longer than you’d possibly imagine. Also, the accuracy in the device is ±3%RH to match up with the humidity environment as needed inside the grow tent.
Aside from the sleek and compact design, the controller also features a large LCD screen which shows the settings pretty easily without any complications. The intuitive display gives information about the settings and calibration so you can manage them according to your needs.
The convenient and unique piggyback plug erasing design gets rid of multiple cords and risks of entanglement that many people often tend to struggle with. The protection feature in the controller comes with functions that ensure automatic shut off and delay protection so there are no risks associated with damage or accidents.
- Multifunctional settings
- Has a large LCD
- High-end chipset and performance
- Accurate functions
- Compact design with piggyback plug erasing design
- Has issues with learning the functions
9. Elitech STC-1000WiFi-TH Digital Temperature and Humidity Controller
Isn’t it nice to invest in a device that takes care of not one but multiple functions? Well, the Elitech STC-1000WiFi-TH Digital Temperature and Humidity Controller is just the right device for that. It allows seamless remote monitoring functions that you can control via Wi-Fi settings.
If the wifi settings aren’t working, this versatile and multifunctional device can be operated using the Elitech iCloud platform or the app that the brand has. This is a 2-in-1 temperature and humidity sensor, which means that you wouldn’t have to stick to just one setting and its regulation.
Unlike some of the other humidity controllers, this one has a high range between 5%RH～99%RH that allows you to heat or cool the environment depending on the seasons and the kind of plants you are growing in.
The dual relay output in the machine allows you to connect two devices at once, one that can handle the temperature and the other for controlling the humidity in the surroundings. Also, the multifunctional settings in the device come with an alarm system that allows you to stay alert.
As for the safety functions and standards, the humidity controller complies with CE, FCC, and WEEE standards and is designed with a fireproof ABS casing on the exterior for enhanced durability unlike all the other humidity controllers in the same price range.
- Multifunctional device for controlling temperature and humidity
- High range functions
- Dual relay output
- Comes with an alarm system
- ABS exterior casing
- A little overpriced
10. Diymore SHT2000 Humidity Controller
Another popular and multifunctional humidity controller that you can consider investing in is the Diymore SHT2000 Humidity Controller. Unlike all the other options in the market, this one is a combination of controlling the temperature and humidity simultaneously.
The best thing about this device is that it checks the surrounding settings and environmental temperature and adjusts the temperature and humidity of the grow tent accordingly to promote faster growth and healthier plants.
It comes with a separate cooling mode function that allows you to cool down the insides of the grow tent, in case there are issues with the hot temperature outdoors. The humidification range in this device is between 50-80% RH, which is a pretty good range, compared to the price you are paying.
- The compact and lightweight device
- Long-range humidification and dehumidification settings
- Thermostat functions are available too
- Comes with a special cooling mode
- Easy to travel with
- Not the best for larger grow tents
11. MicroMall 6” Inline Duct Fan with Temperature Humidity Controller
When looking for the best humidity controller in the market, the MicroMall 6” Inline Duct Fan with Temperature Humidity Controller has proven itself to be one of the best options around. It is specially designed for indoor hydroponic systems.
Not only does it help with humidity control, but it also helps in proper heating and cooling transfer along with commercial drying and air filtration that is needed for the optimal growth of the plants. It also manages the negative temperature and pressure settings to enable uninterrupted growth of the plants.
One unique feature of this humidity controller is likely the smart programming with the temperature and humidity programming. It also enables you to control the fan speed, timer, and alarm along with precise temperature settings inside.
Another feature about this product that makes this a superior option that comes with quiet and energy-saving performance. It comes with PWM controlled EC motor for efficient performance without any damper.
The insides of this humidity controller come with an in-line fan that runs quietly without any issues or excess noise that disrupt the overall performance of the item. It can easily save up to 40% of the energy costs that come in handy in the long run.
- Smart technology programming
- Energy-saving functions
- Noise-free operations
- Does lack a few required features
Ultimate Buying Guide For Hydroponic Humidity Controllers
Growing plants indoors can be challenging. With outdoor, you get natural sunlight and temperatures for optimum growth. But, when grown indoors, plants have to be taken care of with utmost precautions to maintain optimum temperatures and humidity.
That is why people use grow tents for comfortable indoor plant growing. You will need a hydroponic humidity controller for your grow tent to control humidity. Here are some of the points you should remember before you buy the humidity controller.
The sensor is everything in a humidity controller. If the sensor goes wrong, everything goes wrong. A high-precision sensor is crucial for a humidity controller. Both the temperature and humidity should be measured with accuracy by the humidity controller. This will require the best working sensor. When the sensor measures the temperature and humidity, it will automatically work to adjust the above two at an optimum range suitable for your plant. Most Cannabis plants should be grown under perfect indoor conditions for best growth. You will need a humidity controller with an accurate working sensor for this purpose.
Though many humidity controllers in the market also come with temperature measuring and temperature control features, some don’t. It is recommended you buy a humidity controller with a temperature controlling feature in it. Once the temperature is measured, you can set the optimum temperature that you require for adjusting. Some humidity controllers also come with pressure-altering features. These are highly efficient and you should opt for such models than models with just one specific purpose. Some humidity controllers even come with pressure settings and CO2 calibration.
Energy-saving is not a ‘must have’ feature in a humidity controller. But, it is appreciated if you own a humidity controller with the energy-saving feature. This will not only do well for society but also help you lower your energy costs. With energy-saving performance, you can decrease your energy costs and also expect efficient functioning. Some models come with an auto-OFF or automatic shut OFF system. This will prevent unwanted energy wastage and switch OFF the device when not required or not in use. It will help you lower your budget allocation for the humidity controller as it saves some pennies.
Make sure the humidity controller is of a durable and safe design. It must be easy to handle and not complicated. The system of the controller should be pretty easy even for beginners to handle with ease. It is suggested you choose a humidity controller that is free of annoying noises. It should have comfortable digital control for easy access. Some models come with waterproof sensors. You can also review the wire length of the humidity controller. It shouldn’t be too small or too long. Prefer your desired wire length and sensor. A waterproof sensor is always a good option.
Not many humidity controllers come with alarm features. The alarm feature will alert you during temperature and humidity changes. This will help you give immediate attention to the issue and correct it before it’s too late. The alarm feature will also alert you during highs and lows or changes in settings. All these will help you stay connected to your plant and observe even the smallest changes. It will help the plant for the best growth. Imagine ignoring a sudden drop or high in temperature and your plant is getting weaker. The alarm feature will prevent your plant from any mishaps. You should set temperature and humidity values in the settings for the alarm to ring when any change is observed.
Who doesn’t love bonuses? Bonus / additional functions are always good. You will get multiple purposes or uses from a single device. Apart from temperature control and humidity control, some models come with additional functions like pressure control, CO2 calibration, and an automatic shutdown feature. These features will help you grow plants with utmost comfort and also prevent unexpected mishaps. The automatic switch OFF feature is something you should prefer in a humidity controller, as it can save power costs and also help in preventing risks during accidents. Some systems are equipped with humidification and dehumidification modes and have automatic and manual modes to set alarms. Opt for humidity controller models of many modes for flexible and efficient usage.
1. Why is a humidity controller necessary for the hydroponic system?
If this is your first time with a hydroponic system, there are chances for you to be confused about the usability of the humidity controller. If the temperature and humidity inside the grow tent is too much and above the optimal range, the most common issue that everyone faces is rotting. It also locks in a lot more moisture which affects the growth of the plants and creates a very bad odor inside the tent. Excess humidity also hinders the proper carbon dioxide passage, which again is a necessity that you need to make do with.
2. What are the factors that influence the right temperature and humidity of the hydroponic system?
Several factors influence the humidity of the hydroponic system. There is no standard number when it comes to the humidity of the system. It is variable and depends on several factors including the location where you stay, the outside temperature and humidity, and also the time of the day. Generally, the internal humidity needs to be between 50-75%, depending on the weather in the surroundings along with the kind of plants you are likely growing.
3. What factors to check before buying a humidity controller?
With so many amazing humidity controllers available in the market, choosing just one can become confusing and extremely challenging as well. Aside from the basic functions and sensors in the controller, there are a few other factors that one needs to keep a check on. Among them, the durability of the product is one of the most important ones. You need to ensure that the product you are investing in is worth it and won’t get damaged after a few days of usage. Moreover, ensure that it comes with an alarm system as well.
4. Is it possible to grow marijuana plants without these humidity controllers?
Yes, it is quite possible to grow marijuana plants without actually making use of humidity controllers. These are products that help you enhance the overall experience and create ideal conditions for your plants to grow, but you don’t necessarily have to make use of it. This is an additional enhancement that will ensure higher quality plants and even a larger yield per square foot. This will also ensure that your plants get as close to ‘natural’ conditions as possible.
5. Why do marijuana plants need more humidity during the veg phase?
Plants generally tend to need more humidity during the vegetative phase because at this point in time, much of their water intake happens via humidity. Water present in the vapor form is absorbed directly by the leaves. However, this humidity level needs to be reduced during the flowering phase as the plants need more nutrient intake during the later phases and at that time you will need to ensure more water is absorbed from the roots than from the air.
6. How much do hydroponic humidity controllers generally cost?
Generally speaking, hydroponic humidity controllers don’t really cost a lot and you can find most of them ranging between $35 to $75, However, there are some fancier options available which basically allow you to control some other elements as well, such as temperature, CO2, etc, which tends to be a little more expensive and can run into some hundreds of dollars. However, largely speaking, you can easily find these controllers for under $50.
Spending your time with hydroponic systems can be a little too frustrating, especially when it comes to finding the right humidity controller. Not only do you need to keep a check on the quality of the product, but you also need to pay close attention to the technical aspects of it. Here, we have mentioned our top seven picks that we can blindly vouch for. They come with some of the latest functions and features that make them ideal for everyday usage without any complications. If you have the right tools in your hand, handling the hydroponic system becomes extremely easy for the users.
A rotating team of writers and editors dedicated to providing reliable information for the readers of American Promise. We’re all passionate about cannabis and actively engaged in this “budding” industry.