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5 Best Dehumidifiers for Grow Tents 2021 – Reviews & Top Picks

Last updated: April 8, 2021

Best Dehumidifiers for Grow TentGrow Tents have become the easiest and most affordable way to grow your own cannabis at home. Not only will you save money, but you can also ensure that the quality is the best that it can be and is free from pesticides and other harmful chemicals that you do not want to be inhaling into your lungs.

Grow tents offer the perfect micro-environment for growing cannabis. You are in control of the temperature, soil mix, light, and humidity. The small space makes controlling these variables an easy job, and grow tents are the perfect point-of-entry for aspiring growers.

These small tents do have one problem: humidity. The combination of watering plants in a hot but small place can cause a great deal of humidity. This can cause you to have mildew or mold on your plants, not to mention diseases, like bud rot.

Humidifiers are an essential piece of equipment, so you want to choose the correct one for your needs. We looked at the options for grow tent humidifiers and created these in-depth reviews to help you find the best one for your grow tent.


A Quick Comparison of Our Favorites

Image Product Details
Best Overall
Winner
VIVOSUN Mini Dehumidifier VIVOSUN Mini Dehumidifier
  • Energy efficient
  • Compact and lightweight
  • Large storage tank
  • Best Value
    Second place
    Eva-Dry E-333 Renewable Mini Dehumidifier Eva-Dry E-333 Renewable Mini Dehumidifier
  • Cordless and rechargeable
  • Eco friendly and non-toxic
  • Affordable
  • Premium Choice
    Third place
    hOmeLabs Energy Star Dehumidifier hOmeLabs Energy Star Dehumidifier
  • Massive storage tank
  • Multiple user settings
  • Additional drainage hose attachment
  • Vremi Compact Portable Dehumidifier Vremi Compact Portable Dehumidifier
  • Low energy consumption
  • Auto shut off
  • Ivation HALOFUN Small Compressor Dehumidifier Ivation HALOFUN Small Compressor Dehumidifier
  • Extra drainage hose connection
  • Touch-button display
  • Programable user modes
  • The 5 Best Dehumidifiers for Grow Tents — Reviews 2021

    1. VIVOSUN Mini Dehumidifier — Best Overall

    VIVOSUN

    The Vivosun Mini Dehumidifier tops our list for a good reason. It has an energy-efficient design to save on your utility bills and is small and compact, perfect for grow tents. This means it will absorb excess moisture and take up little space in the process. Its light weight makes it easy to move between tents and to clean. Its plug-and-play design makes it perfect for the budding grower.

    A 1.4-liter capacity will give you ample storage for excess moisture, removing the hassle of continuously emptying the bucket. Once the bucket is full, the dehumidifier will automatically shut off, and a red LED indicator will alert you to empty it. It works efficiently and quietly for small spaces, the recommendation being a tent with 215-269 square feet of space. It can remove roughly 400ml of moisture a day in a 77-degree Fahrenheit room, which is ample for small tents.

    Its elegant design, efficient power usage, convenient auto shutdown, and low price make it our top choice dehumidifier for grow tents.

    Pros
    • Energy efficient
    • Compact and lightweight
    • Large storage tank
    • Auto shutdown
    Cons
    • Fairly expensive

    2. Eva-Dry E-333 Renewable Mini Dehumidifier — Best Value

    Eva-Dry

    When it comes to the best grow tent dehumidifier for the money, the Eva-Dry is it. This unit is cordless and rechargeable, lasting up to four weeks before needing a recharge. However, the term “recharge” is not quite correct. This dehumidifier is unique in that it uses small silica gel beads to extract moisture from the air. The beads turn from orange to green, indicating that it’s time to “charge.” What actually happens when you plug it in is that it starts heating from a small element. This heating dries out the silica beads and readies them for another round of moisture intake.

    While the cordless feature is great, it is also the one drawback that keeps this dehumidifier from topping our list. Having to take it out to “charge,” which can take eight to 12 hours, leaves your room with no dehumidifier for a long time. This could be a problem in your grow, like flowering, so ideally, you would have two units to switch between in order to get the job done perfectly. Its claim of 4 weeks between “charges” is only an estimate, as it depends on the moisture content in the air. For grow tents, this charging will likely be needed far more often.

    Apart from this, it uses virtually zero power, so it’s the most power-saving and eco-friendly dehumidifier on our list and for an affordable price. Because it requires no power, it’s also a great option for drying rooms. To top it off, it has a five-year warranty.

    Pros
    • Cordless and rechargeable
    • Eco friendly and non-toxic
    • Affordable
    Cons
    • Long charging time

    3. hOmeLabs Energy Star Dehumidifier — Premium Choice

    hOmeLabs

    The hOmelabs dehumidifier can remove an incredible 22 pints (10 liters) of moisture per day. For a small grow tent, this makes the hOmelab more than adequate. It has a 1-gallon (3.8-liter) storage tank and a nifty drainage hose to save you the hassle of manually emptying it. It is quiet and easy to clean and has six different settings to give you many automatic options for your grow. These include a 24-hour cycle timer, auto shut-off when full (provided you aren’t using the drainage hose), and a “Turbo Mode” for when things get a bit too moist.

    It’s in third place on our list due to its high price and large size. It takes up far more room than the other dehumidifiers on this list, which is a big concern for limited-space grow tents. However, it’s a solid, quality product.

    Pros
    • Massive storage tank
    • Additional drainage hose attachment
    • Multiple user settings
    Cons
    • Expensive
    • Large dimensions

    4. Vremi Compact Portable Dehumidifier

    Vremi

    The Vremi dehumidifier has a 1.5-liter storage tank and a 150-square-foot space range. It has a low-energy consumption rating of only 36 watts, saving on utility bills. It’s 11 inches high and 7 inches long, making it ideal for small spaces and easy to move around. It has an auto shut-off feature and a red LED indicator to conveniently let you know when it’s time to empty the tank.

    It claims to remove a pint or so every three days, but user reviews tell a different story. Most would say that it’s safer to halve that number. While customer service is great, with timely replacements, the number of reported failures makes it an affordable but fairly unreliable choice.

    Pros
    • Low energy consumption
    • Auto shut off
    Cons
    • Unreliable
    • Users report that it’s ineffective

    5. Ivation HALOFUN Small Compressor Dehumidifier

    Ivation HALOFUN

    The Ivation dehumidifier claims to remove 11 pints a day in a 216-square-foot space. It has a touch-button display, programmable timer, and auto shut-off. It has two modes that are particularly useful for tent growers: a continuous mode for constant moisture uptake and a programable mode. You can set your desired humidity level, and the Ivation will remove only enough to keep your tent at this level. This is a real advantage, as different growth stages often require different humidity levels. It has an output hose connection for hassle-free water dumping (hose not included) and a removable 2-liter storage bucket.

    This dehumidifier is big, coming in at 18 inches tall and 9-1/2 inches wide. While it has wheels to easily move around, it will take up a big space in your tent.

    Pros
    • Extra drainage hose connection
    • Touch-button display
    • Programable user modes
    Cons
    • Noisy
    • Short lifespan
    • Large and bulky

    Buyers Guide

    It can be a struggle to control humidity in a smaller space like a grow tent, and a dehumidifier is therefore an essential component. The worst sight for a grower is seeing your fattening buds getting powdery mildew after two months of hard work. The right dehumidifier will mean the difference between mold and sticky THC-rich resin-filled buds.

    There are a few things to keep in mind when deciding on a dehumidifier for your tent:

    • How many plants will you be growing? More plants mean more watering and thus, more moisture in the air.
    • How big is your grow tent? A bigger grow tent will require a bigger dehumidifier to pull out the moisture adequately. A small dehumidifier will need to be emptied frequently, which can become a hassle.
    • What’s your budget? While it’s always ideal to go for the best quality, this comes with a high price tag. If you’re on a budget, you’ll want the best dehumidifier possible for the lowest price.

     Size

    This is the biggest consideration for a grow tent dehumidifier. If you have a small tent with just a few plants, a more compact dehumidifier will adequately do the job and not take up precious grow space. But a smaller model will need to be emptied more often, which is a hassle and potential mold inducer. A dehumidifier with a hose output attachment would be a more reliable option.

    However, if your tent is on the larger side, you’ll need a dehumidifier that’s up to the task of keeping your humidity below the required levels. A bigger dehumidifier will take up more space but save you the time-consuming task of emptying the tank, and it will also remove more moisture from the air of the bigger space.

    Number of Plants

    More plants equal more watering, which means more moisture in the air. This is particularly apparent in younger plants. Growing plants require different humidity levels at different stages, and younger plants ideally need between 60% and 70% humidity for optimum growth. This is because they need to absorb more moisture from their leaves, as the roots are not yet fully developed. So, if you’re planning on doing a great deal of seedling and vegetative growth, keep this point in mind.

    It’s a good idea to decide if your dehumidifier will be used for all stages of growth or just for seedlings, flowering, etc. The former will ideally need a bigger, more robust, and programable dehumidifier in order to deal with varying moisture levels.

    Dehumidifiers for Grow Tent

    Is a Dehumidifier Really Necessary?

    Remember that especially in the first month or so, the leaves will be doing the heavy lifting and need to provide both nutrients and water to your plants, due to the undeveloped root system. This makes humidity an essential component to consistent growth and bigger yields. Too little humidity in this early stage and your babies will likely dry out and have stunted growth rates and yields. Too much and mold, diseases, and powdery mildew will devour your crop. It’s therefore an essential addition to every grow tent, no matter your budget constrictions.

    In summary, a dehumidifier will:

    1. Accurately control humidity levels
    2. Assist plants with photosynthesis
    3. Increase yields
    4. Increase plant size and improve health

    Conclusion

    With features like great energy efficiency, a sleek, elegant design, and a large tank capacity, the Vivosun Mini dehumidifier tops our list. It’s a good choice for experienced and budding growers alike and won’t break the bank either.

    The best grow tent dehumidifier for the money is the Eva-Dry E-333 Renewable Mini Dehumidifier. Its unique portable cordless design, with silica beads doing all the work, also makes it the most energy-efficient option. This saves you money in the long run.

    Hopefully, we’ve helped you navigate the confusing maze of features that can come with products like dehumidifiers. This list is by no means exhaustive, but these are tried-and-tested products that will do the job for grow tents without breaking the bank in the process.


    Featured Image Credit By: Vremi Compact Portable Dehumidifier, amazon