Dehumidifier Outside or Inside Grow Tent?

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When the humidity rises above the desired level, it has to be extracted before it affects your plants. Deciding where to place the dehumidifier its another ball game.

If you are not an expert, you might not know whether to place it inside or outside the Grow room.

However, you can’t just choose either. There are factors that you should consider for you to make the best decision. In this article, we will discuss critical factors that you should consider for you to make the right decision.

Let’s get started.

Factors to Consider When Choosing Between Placing a Dehumidifier Outside or Inside Grow Tent

The decision of where to place the dehumidifier in a Grow tent will depend upon several critical factors. And the following are the factors.

1. Size of Your Grow Tent

Size of Your Grow TentThis is the number one factor that will determine most of the things you can do in a Grow tent leave alone, deciding on where to place a Dehumidifier.

By now, you should be aware that Grow tents have different sizes ranging from 2 feet by 2 feet as the smallest tents. In other cases, you will find a large Grow of tents of over 20 feet by 10 feet.

The size of your grow tent will determine the size available for a dehumidifier.

A dehumidifier will take some space from your Grow tent. If the growing area is small, then its not advisable to waste space by putting a dehumidifier inside. In this case, it will only be wise to put the dehumidifier outside the tent.

However, if space is not a problem, then go ahead and place the dehumidifier inside the Grow tent.

In short, space should always be the number one factor to determine where exactly you plan to keep your dehumidifier.


Whenever you choose to place a dehumidifier outside your Grow tent, ensure it’s in the right design. It should be compatible with your ducting systems. Don’t worry about this point. We will discuss it as our next factor since it’s a critical point that will determine where to place your dehumidifier.

2. Your Humidifier Installation Method

In the market, you will find Dehumidifiers that comes with multiple or limited methods of installation. It’s up to you to decide which dehumidifier is best for you. The following are the common installation options that come with dehumidifiers.

  1. Freestanding Dehumidifiers

These are dehumidifiers that can be placed on the ground or supported by something else like a table. You don’t use any too to install it. All you need to do is buy and place them on the ground.

These types of dehumidifiers can only be placed inside your Grow tent. You cannot place them outside since they won’t do their work while outside.

Most of the freestanding dehumidifiers are small in size to save the space which they occupy when placed inside a Grow tent.

We recommend you buy a tower dehumidifier in this category. Their compact design will help save much space inside your Grow tent.

If you have a small tent and you are looking for the best freestanding Dehumidifier, buy Colzer 70 Pints Portable Dehumidifier. It’s a small and powerful dehumidifier for small and medium grows spaces.

But if your space is large and you need a free-standing dehumidifier hOmeLabs 3,000 Sq. Ft Energy Star Dehumidifier is the best option you can ever find in the market.

  1. Suspended Dehumidifiers

This is a technique that safes space for people with small spaces, and it’s a humidifier to place inside your Grow tent.

You don’t have to place it on the ground. You can hang over the ceiling or suspend on the wall of your grow tent. It could be the best pick for you if space is an issue.

Install the dehumidifier with a set of brackets. Ensure you follow the manual that comes with it to align the dehumidifier is a way that it will filter your entire Grow tent.

If you are looking for an effective dehumidifier for all sizes of a tent, buy AlorAir Commercial Water Damage Restoration Dehumidifier. It comes with suspending components for any size of a grow tent.

  • Ducted Dehumidifiers

This is the perfect dehumidifier for placing outside a grow tent. If you have limited space in your grow tent, it’s the best option you can ever find in the market.

The dehumidifier connects to your Grow tent ductworks. All you need to do is ensure that the installation is airtight and no space is left between the ducts.

If you choose this method, buy AlorAir Commercial Water Damage Restoration Dehumidifier. It comes with suspending components for any size of a grow tent.

3. Grow Tent Air Requirement

Here is another critical factor to consider when deciding where to place your Dehumidifier. It will help you determine where to place your dehumidifier.

If your tent requires a high level of air extractions, you need to get a powerful dehumidifier. The most common dehumidifiers have a capacity of about 200 Cubic meters per hour.

In the market, you won’t find a dehumidifier with that you can set up inside the tent with such performance. In this case, you will be required to place your dehumidifier outside the tent.

If you get a smaller dehumidifier and place it inside your tent, it would work correctly. Soon you will start noticing condensation in the Grow room. This will happen because before you humidify the entire space, another air would have found its way in and replaced the old one.

But in the case where you only need a smaller volume of air movement, you can easily get a smaller dehumidifier and place it inside the Grow tent.

The idea here is to pick a dehumidifier that suits your air extraction needs. For small volumes, feel free to put the dehumidifier inside the grow tent. However, for large volumes, get a powerful dehumidifier and place it outside your Grow tent.

4. Dehumidifier Capacity

Dehumidifier CapacityAfter mentioning all the above factors, this last factor should be obvious. When you check on Amazon, you will see dehumidifiers that come in different sizes and capacities.

Probably, you have already bought a dehumidifier, and you are not sure where to place it. And that could be the reason you came to look for a solution.

It’s simple. Use the same principle as we have suggested in the previous factor.

Dehumidifiers with large capacities should be kept outside. However, those with smaller capacity can be placed inside a grow room. But its also important to note that – there is no problem if you take a small capacity dehumidifier and place it outside the Grow tent.

It’s also important to note that you should be a dehumidifier that suits your dehumidifying requirements.

We discussed this point as the last point because it’s depended on all the other three factors. As you choose to buy a dehumidifier, get the one that has the capacity of your Grow tent.

Attention: Important Note

Before we conclude, it’s important to note that after you decide either to place the dehumidifier inside or outside your Grow tent, you need to control it. Don’t leave it to operate on itself. Most dehumidifiers come with control to set the level of dehumidification you would require for your Grow tent.

Plants need different levels of humidity in their growth stage. When you use a dehumidify, ensure you don’t dry the air and leave your plants to suffer.

The following are the standard humidity requirements for every phase. Ensure you maintain humidity within these ranges at all times.

Seedling Stage – 70% to 75% Humidity Level

At this stage, plants are developing. The roots cannot obtain enough water for the plant. This is why you need more moisture. Your baby plant will get plenty of water from the atmosphere.

Having a high humidity level will help the plants to thrive well as all parts mature and thrive well.

Dehumidifier Outside or Inside Grow Tent

Vegetation Stage – 50% to 70% Humidity Level

At this stage, the plants have developed roots. However, they still need to absorb more water from the atmosphere to sustain the high rate of growth.

If the humidity is low, it will lead to a stunted growth rate.

Flowering Stage – 40% to 50% Humidity Level

In this stage, you need the humidity to be average to give a conducive environment for flowering. Average humidity will prevent moulds or mildews from forming around the flowers.

Harvesting Stage – 45% to 50% Humidity Level

At the harvesting stage, you need humidity at an average level to ensure that the yield doesn’t become brittle and harsh.

Parting Shot

The decision on where to place your dehumidifier is entirely depended on critical surrounding your tent. It’s important to factor the space of your tent, type of humidifier, air extraction requirement, and the capacity of your Grow tent.

These are critical factors that you need to consider. Most importantly, buy dehumidifiers that we recommended in this article. They will give you the best performance.