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Best Grow Dehumidifier: Cultivating Success for Thriving Grow Rooms

Best Grow Dehumidifier

If you’re grappling with grow room humidity, zero in on the best grow dehumidifier to shield your plants and enhance yield. This curated list cuts to the chase, spotlighting top-performing dehumidifiers designed for the unique demands of indoor cultivation, promising to elevate your garden’s health and productivity without overwhelming you with technical jargon.

Overview of Premier Dehumidifiers

Maintaining an optimal humidity level is pivotal for the health of your indoor plants. But why? Excessive humidity can lead to issues such as powdery mildew, bud rot, and other fungal problems that could sabotage your crop yield. Grow room dehumidifiers are essential for controlling humidity levels, safeguarding your indoor nursery from these potential hazards.

How should one select the ideal dehumidifier for their grow room? The answer lies in understanding your specific needs. If you’re a hobbyist cultivating a few plants at home, you might not need a dehumidifier. But for those with more substantial setups, a portable dehumidifier like the Ideal-Air Portable Dehumidifier can be a great fit. It’s compact, but don’t let its size fool you. This little powerhouse is designed to keep your small grow tent or closet dry and your plants thriving.

For expansive setups, a dehumidifier with greater capacity may be necessary. The Quest Overhead Dehumidifiers are highly efficient, and some models boast an energy efficiency of as low as 4.8 pints per kWh, making them the best dehumidifier choice for large spaces.

And for those who prefer a portable option with a host of features, the GE Portable Dehumidifier comes with humidity level selection, three fan speeds, and a smart dry feature to name a few.

Best for Large-Scale Operations - Subcooled 705 Dehumidifier

When it comes to large-scale operations, the Subcooled 705 Dehumidifier is a class apart. This beast can eliminate over 705 pints of water daily, making it a robust solution for commercial grow rooms. But it’s not just about power. The Subcooled 705 Dehumidifier efficiently manages high humidity levels, reducing it to below 50%. Such precision qualifies it as one of the superior grow room dehumidifiers available currently.

But the Subcooled 705 Dehumidifier isn’t just about plant health. It also considers those tending to the plants. Its ‘No Sweat’ work environment ensures comfort for the workers in the grow rooms, preventing issues that arise from too little humidity. This innovative solution to humidity control was developed by none other than Tom Dillon and is a testament to the brand’s commitment to delivering top-of-the-line dehumidification solutions.

Specifications for the Subcooled 705 Dehumidifier

Concerning specifications, the Subcooled 705 Dehumidifier excels. The device requires a standard 15 amp, 115 volt wall receptacle for power. Additionally, it needs to be connected to a standard 5 ton, R-410a air conditioner condensing unit. This setup enables it to effectively remove water vapor from the air in the indoor grow room.

Moreover, the Subcooled 705 Dehumidifier comes with a one-year warranty, covering any defective parts. This warranty, coupled with its performance, establishes it as a reliable choice for large-scale growers.

Best for Energy Conscious Growers - Subcooled 550 Hybrid Dehumidifier

For growers conscious about energy usage, the Subcooled 550 Hybrid Dehumidifier is a game-changer. It boasts high-efficiency features like variable speed fans, a high-efficiency compressor, and an intelligent defrost system. These combined features can cut energy costs by up to 50%, and there’s more to it than just savings. This dehumidifier also effectively removes excess moisture from the air, ensuring a healthy environment for your plants.

The Subcooled 550 Hybrid Dehumidifier offers the following features:

  • Delivers 550 pints/day of dehumidification

  • Provides 3 tons of cooling from a single unit

  • Dual functionality for indoor cultivation activities

  • Humidistat controlled drying for effective humidity control

  • Stainless steel drain pan for durability

  • 1,300 cfm supply air blower for efficient management of high relative humidity in grow rooms

These features make the Subcooled 550 Hybrid Dehumidifier an exceptional option for indoor cultivation activities, ensuring precise and efficient humidity control.

Best for Mid-Sized Grow Rooms - Climadry 705

For those managing mid-sized grow rooms, the Climadry 705 dehumidifier is a solid choice. It’s specifically designed for such spaces, especially those located in humid environments. With the Climadry 705, you get a smaller, more affordable dehumidifier that does not compromise on performance.

The Climadry 705 is equipped with various operational features. It can plug into a standard 15 amp, 115 volt wall receptacle and provides the option of cool or warm, dry air for indoor humidity control. These features make it one of the best grow room dehumidifier options for mid-sized spaces.

Best Full Spectrum LED Grow Light - Subcooled 705

Light is as essential to plant growth as air and water, and the Subcooled 705 Full Spectrum LED Grow Light delivers just that. It provides powerful, adjustable lighting for optimal plant growth in indoor gardens. The light is adjustable, allowing you to customize the intensity and color temperature to suit your plants’ needs.

A distinct feature of the Subcooled 705 Full Spectrum LED Grow Light is its sophisticated cooling technology. It operates at a low temperature, ensuring that your plants stay healthy and thrive, even under continuous exposure.

Best for Uniform Air Circulation - DG-X

Air circulation is a critical factor in maintaining a healthy indoor garden. The DG-X dehumidifier presents an innovative solution with its proprietary air circulation technology. It ensures uniform air distribution, which is essential for efficient humidity control.

The uniform air distribution feature of the DG-X dehumidifier is brought about by its Air Distribution Module. This module is specifically designed to optimize airflow and guarantee 360-degree circulation within the room. This technology not only helps in maintaining the ideal humidity levels but also reduces the need for additional fans, making it one of the best grow room dehumidifiers in the market.

Best for Residential Grow Spaces - hOmeLabs 3,000 square foot dehumidifier

The hOmeLabs 3,000 square foot dehumidifier is a top choice for residential grow spaces. This dehumidifier can effectively dehumidify areas up to 3,000 square feet, making it perfect for mid-sized houses, apartments, or larger basements.

A notable feature distinguishing the hOmeLabs dehumidifier is:

  • Its integrated pump enabling continuous drainage, eliminating the need for frequent manual emptying

  • Its digital display offering convenience and user-friendly operation

  • Its sleek and efficient design that seamlessly blends into the aesthetics of residential spaces, making it an ideal choice for home use.

Specifications for the hOmeLabs Dehumidifier

The hOmeLabs Dehumidifier has dimensions of 11 inches in depth, 15.4 inches in width, and 24.3 inches in height. Its sleek and compact design is ideal for seamless integration into residential grow spaces.

This dehumidifier consumes approximately 5.76 kWh per day, making it an energy-efficient choice for daily use. Meanwhile, its 35-pint dehumidification capacity ensures effective control of humidity in grow spaces.

Essential Considerations for Dehumidifier Selection

Selecting the appropriate dehumidifier for your grow room involves meticulous evaluation of various factors. Brand reputation is a good starting point. A reliable brand indicates the quality of the dehumidifier and its performance.

Another important factor is the dehumidifier’s moisture removal capabilities. These are usually measured in pints per day (PPD). This measure helps determine the appropriate dehumidifier capacity for your grow room.

Lastly, one must also consider energy efficiency. The energy efficiency of a dehumidifier directly influences its operating costs. For example, the DG-X, which removes 0.87 gallons of water per kWh, can lead to energy savings of up to 50%.

Matching Dehumidifier Size to Your Grow Room

To sustain ideal humidity levels in your grow room, it is imperative that the dehumidifier size aligns with that of the grow room. This involves taking into account factors like the number of plants, their transpiration rate, and additional water from evaporation.

The size of your dehumidifier should be such that its moisture removal capacity is able to keep up with the transpiration rate of your plants and any environmental factors contributing to humidity, such as inadequate ventilation. Achieving this equilibrium helps prevent:

  • Extreme humidity levels

  • Mold

  • Diseases

  • Inefficient plant processes

Understanding the Impact of Humidity on Plant Growth

Humidity plays a crucial role in indoor growing. Sustaining ideal humidity levels in your indoor grow operations can deter mold growth and foster healthy plant development.

High humidity levels can negatively affect a plant’s capacity to take in and utilize nutrients, potentially leading to compromised health and hindered growth. Hence, comprehending the effects of humidity on plant growth is fundamental for prosperous indoor gardening.


In conclusion, selecting the right grow room dehumidifier requires careful consideration of several factors. From understanding the role of humidity in plant growth to selecting a dehumidifier based on your specific needs and grow room size, it’s a decision that can significantly impact the success of your indoor garden.

Frequently Asked Questions

How big of a dehumidifier do I need for a grow room?

To determine the size of dehumidifier you need for your grow room, aim for one that can remove at least 75% of the water you put into the room daily. For instance, if you add 100 liters of water per day, look for a dehumidifier that can remove 75 liters of water from the air.

Can you use a dehumidifier in a grow room?

Yes, you can use a dehumidifier in a grow room to regulate humidity levels based on the growth stage of the plants. Choose the right size and configuration to effectively reduce humidity as needed.

What size dehumidifier do I need for a 1200 sq ft basement?

For a 1200 sq ft basement, you will need a dehumidifier with a capacity of around 40-50 pints per day. This will effectively remove moisture from the space and prevent mold and mildew growth.

Is 50% humidity good in grow tent?

Maintaining a humidity level of 50-55% in a grow tent is recommended as it helps prevent powdery mildew and other fungal plant diseases. This range is beneficial for the health of the plants.

Does a dehumidifier help with weed?

Yes, using a dehumidifier for cannabis helps prevent diseases, improve growth quality, and increase dry weight.