Best Dehumidifier For Grow Tent – Expert Reviews 2024

Grow fresh marijuana at home.

Are you tired of buying stale vegetables, fruits, and medicinal marijuana from unreliable vendors?

Of course, nothing in the world tastes better than fresh home-grown produce. Growing edible and medicinal plants at home is an amazing, fulfilling experience. It takes your health and wellness to a whole different level.

But don’t be worried if you have insufficient outdoor space, incompatible soil, or climatic conditions.
Today anyone can grow plants anywhere.

It doesn’t matter if you have insufficient outdoor space or soil, or if you are a novice. Irrespective of the season or climatic condition, anyone can enjoy an excellent, perpetual harvest.

All you need is a handy grow tent/grow room.

A grow room is a tall tent-like structure, with reflective interior walls. It is lightproof, waterproof, and so compact that it can easily fit even into a closet. Grow rooms give you the flexibility to use hydroponics, aeroponics, and other latest techniques for maximum yield.

You can set your marijuana plants here along with a grow light, fan, and any other amenities you’ll need.

Beat your cultivation nightmares

The humidity level in the air plays a critical role in the survival and growth of plants in grow tents. Cultivation nightmares begin to grow room owners when the moisture levels increase beyond 70% RH. It is painful to see marijuana and other plants wilt and die due to increased moisture levels.

Another major nightmare for marijuana growers is bud rot, mold and mildew growth, the spread of bacterial and fungal infection, and pest infestation.

These problems increase the incidents of diseases in the marijuana crops, decrease your chances of high yields, and threatens the basic survival of the plants.

To beat these cultivation nightmares, you need to take immediate steps to reduce the humidity level in your grow tent. High humidity is extremely dangerous for the growth of marijuana.

How can you reduce and optimize moisture levels in your grow room?

It’s quite simple. Just install the right dehumidifier for your grow tent.

A dehumidifier is the most reliable appliance to remove excess moisture from the air every single day. You will surely see your marijuana thrive, once you install the best dehumidifier.

Why do we need a dehumidifier for grow tent?

Regulating humidity is a tricky affair for marijuana growers. Whenever plants breathe, perspire, transpire, or get watered, the humidity level fluctuates drastically.

When the grow room humidity is high, the marijuana plants use their leaves to absorb moisture from the air. This process makes them consume less water through their roots. On the other hand, when the moisture in the air is low, they will pull more water in through their roots.

It is a well-known fact that water provides most of the vital nutrients to plants. Since the moisture content in the air influences the water intake, it directly affects nutrient absorption to a great level.

Further, high humidity causes marijuana plants’ buds to rot and develop powdery mildew and mold in the roots, stems, and leaves. Thus your marijuana crop gets totally wasted as it gets close to harvest.

Controlling or optimizing moisture levels play a critical role in maintaining the health of marijuana plants.

That’s why expert cultivators deploy the best grow tent dehumidifiers for humidity control.

One of the key challenges growers face is finding the right size dehumidifier. Grow room dimension generally ranges from small grow tent size such as 2×2, 3×3, and 4×4, to larger ones with 5×5 size. Though in certain cases, they demand a greater height, making the size 4×8.

The key to the best moisture removal lies in choosing the best dehumidifier for grow tent. Don’t make the mistake of using the home dehumidifying unit you already own. Make sure that the dehumidifier you use is specifically designed for grow rooms.

The unit can be a silica gel canister dehumidifier or a thermo-electric or a compressor dehumidifier. The silica gel canister dehumidifier falls under the desiccant category which is quite economical and efficient in colder temperatures.

Not sure which one is the best dehumidifier for grow tent?

Check out our top 5 best dehumidifier reviews for grow tent.

5 Best Dehumidifiers For Grow Tent (April 2024)

Based on our extensive experience in the field of dehumidifiers, here is our review of the best dehumidifier for grow tent. We have narrowed down the top 5 best dehumidifiers for grow areas based on significant parameters such as pint capacity per day, cost energy star rating, sq ft coverage area, water reservoir capacity, drainage mode, noise levels, portability, compactness, and automatic features such as auto shut off, auto defrost, and auto restart.

Ready to dive in and figure out which is the best dehumidifier for grow room?

Here you go.

Signs your grow tent is too humid

Marijuana and humidity.

Humidity is both a blessing and a curse to your marijuana plants in the grow tent.
A healthy humidity level makes your marijuana healthy and helps you enjoy maximum yield. It facilitates optimal airflow, sugar production, nutrient absorption, and growth.

Marijuana plants love higher humidity when they are growing, and need lower humidity when they mature. Here are the optimal humidity levels needed for marijuana to thrive.

🌱 Clones – 70% RH
🌱 Vegetative phase – 40 to 60% RH
🌱 Flowering phase – 40 to 50% RH
🌱 Final weeks of flowering -40 to 45 % RH

But when humidity crosses optimum levels, it becomes fatal to the plants.
Humidity affects the way the plants take in water to absorb nutrients and grow to their full potential. It influences the amount of water they absorb through their roots or leaves, thus controlling nutrient intake.  

How do you know if your grow room is too humid?

Well, there are several signs that indicate the presence of excess humidity. The most significant symptoms are as follows.

🍃 Bud rot– If you find the marijuana buds rotting, especially during the flowering season, then definitely there is high humidity.
🍃 Mold and mildew – The white mold and powdery mildew in the leaves, stem, and root indicate high humidity issues. They prevent the leaves from absorbing water, light, and air.
🍃 Pest infestation – When you begin seeing pests such as aphids, ants, caterpillars, spider mites, etc., you most certainly have excess humidity.
🍃 Water stagnation– If you find puddles in your grow area, then the humidity percentage is high for sure.

Make sure you use lights that generate less heat and drain stagnant water to avoid unnecessary humidity problems.

How to lower humidity in grow tent/grow room without dehumidifier?

Though using a grow tent dehumidifier is the best way to reduce grow room humidity, other methods are available. They may not be as effective as a grow room dehumidifier.

But they can help for sure.

Here are a few ways to reduce humidity without using a dehumidifier in grow room.
1. Use an air conditioner
2. Increase ventilation
3. Insulate and seal the grow area
4. Add more fans
5. Create air holes
6. Deploy a Thermostatically Controlled Block Heater

Investing in thermometer-hygrometer combos is great for keeping track of the humidity level in the grow room.

What size dehumidifier for grow room should we buy?

Getting the dehumidifier size right plays a critical role in ensuring efficient moisture removal in the grow room area.

The first factor you need to consider is the grow tent dimension. The relative humidity requirement will vary according to the size of the structure. For example, a 4× 4 grow tent may require 40% RH, while a 5×5 grow tent will need at least 65% RH.

If you have small grow rooms with a 2 x 2 grow tent, 3 x 3 grow tent or 4 x 4 grow tent, you need to choose small dehumidifier units. The best dehumidifier for 2 x 2 grow tents and 4 x 4 grow area is Eva-dry Edv- 1100 electric petite dehumidifier. You can also try Eva dry e500 mini dehumidifier for silica-based renewable dehumidification options.

Both Eva-dry Edv- 1100 electric petite dehumidifier and Eva dry e500 mini dehumidifier are energy-efficient units. They consume low power and are perfect for 3 x 3, 4 x 4, and 2 x 2 grow tent areas. To speed up the process of drying marijuana, you can use mini desiccant types such as the silica gel canister dehumidifier.

Next, you need to consider the ventilation, lighting, air filter, and humidity sources of the marijuana grow area.

Once you have all the grow area specifications cleared out, you need to evaluate the dehumidifier options. Appraise the dehumidifier’s pint capacity, square feet coverage area, cubic feet volume air circulation, reservoir capacity, control panel features, power cord extensions, LED indicator facility, energy efficiency, silica gel technology usage, weight, and dimensions before choosing the right dehumidifier for grow tent.

Here is a pro tip.

Experts say that settling for the best dehumidifier with a larger pint capacity ensures effective, energy-efficient, and quick moisture removal.

Our Verdict

Now it’s time for the verdict.

Any guesses here?

Our verdict is based on two major criteria. We have evaluated the dehumidifiers for overall performance and cost-efficiency.

To evaluate overall performance and cost-efficiency, we have reviewed the pint capacity, sq ft area coverage, energy star rating, auto shut, auto defrost, led indicator and level indicator presence, water tank capacity, and other significant parameters.

So here is our take on the best dehumidifier for grow areas.

Here you go!

🌟 Best Overall – Vremi Energy Dehumidifier
🌟 Runner Up – homelabs 30 Pint Dehumidifier
🌟 Best Budget Dehumidifier – Pro Breeze Electric Mini Dehumidifier

Which grow room dehumidifier are you going to buy?

We are curious to know.

Don’t forget to conduct complete due diligence and read the table of contents on the dehumidifier package before buying the unit. Cross-check the parameters and get back to the manufacturer if you find operation mismatches.

Still, got questions?

Check out the FAQ section below.