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MARS HYDRO 38 Pints Plant Dehumidifier 18L/day for Grow Tent & Home

  • Based on 33 reviews
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Availability: In Stock.
Fulfilled by MARSHYDRO-2025

Arrives Nov 3 – Nov 15
Order within 18 hours and 22 minutes
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Features

  • Grow Tent-Optimized Unique Design: Equipped with an air duct, this dehumidifier can sit outside your grow tent, channeling moisture out without introducing extra heat that might disrupt plant growth. Its perfectly suited for 3x3, 2x4, and 4x4 ft grow tents
  • Smarts Humidity Control: Features a high-efficiency compressor that removes up to 38pint of moisture daily; Equipped with high-precision sensors that monitor temperature and humidity to maintain the perfect grow room environment, It ensures powerful dehumidification with lower energy consumption, saving you money on electricity bills
  • Smart Auto Mode for Hands-Free Comfort: Set your desired humidity level (between 30% and 90%) and let the auto humidity control do the work. It automatically switches on/off to maintain a comfortable environment, providing hassle-free operation and optimal moisture balance
  • Convenient and Easy Maintenance: Features a removable and washable dust filter simply clean it under a faucet, and no replacement filters are needed. The unit automatically stops when the water tank is full, and an indicator light alerts you, making maintenance straightforward
  • Hassle-Free Installation & Flexible Mobility: Installs in seconds without any tools to integrate seamlessly into your grow area; Integrated handles and smooth-rolling caster wheels allow for effortless movement and positioning whenever you need

Description

Since 2009, MARS HYDRO has been dedicated to designing and manufacturing growth tents for over 16 years, focusing on addressing home planting issues. Your preferred brand for planting. We cooperate with global excellent suppliers pursue excellent quality, reasonable price, and services for hydroponics growing system kit. Our mission is to make planting easier and more efficient for you.

Brand: MARS HYDRO


Floor Area: 215 square_feet


Color: Black


Special Feature: Adjustable Humidity Control, Automatic Moisture Removal, Digital Display, Timer, Washable Filter


Capacity: 2.1 liters


Tank Volume: 2.1 liters


Product Dimensions: 13.2"D x 8.7"W x 18"H


Recommended Uses For Product: Residential


Included Components: Air Duct, Connecting Components, Drain Hose, Temp/humidity, User Manual


Item Weight: 29.3 pounds


Floor Area: 215 square_feet


Other Special Features of the Product: Adjustable Humidity Control, Automatic Moisture Removal, Digital Display, Timer, Washable Filter


Capacity: 2.1 liters


Tank Volume: 2.1 liters


Operation Mode: Automatic


Dehumidification Capacity: 38 pints_per_day


Item Dimensions D x W x H: 13.2"D x 8.7"W x 18"H


Item Weight: 29.3 pounds


Recommended Uses For Product: Residential


Color: Black


Brand Name: MARS HYDRO


Included Components: Air Duct, Connecting Components, Drain Hose, Temp/humidity, User Manual


Model Name: MH-Dehumidifier


Model Number: MH-Dehumidifier


Number of Items: 1


Number of Packs: 1


Item Highlight: with Digital Temperature & Humidity Control Display, 2.1L Water Tank, Air Duct, Drain Hose & Washable Filter


Unit Count: 1 Count


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Nov 3 – Nov 15

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews


  • Great dehumidifier
This thing works fantastic, and once it's dialed in and set on automation it's absolutely perfect, only thing is it needs to be slightly tilted forward to drain properly, I suggest just taking a piece of cardboard under the back wheel
Reviewed in the United States on September 3, 2026 by Roni

  • The perfect addition to my grow is here
I’ve been running the Mars Hydro dehumidifier in my grow space and honestly, it’s been a solid addition to the setup. First off, it’s super easy to use. The LCD display makes everything straightforward—you can quickly check humidity levels, adjust settings, and monitor what’s going on without guessing. That’s a huge plus, especially if you’re trying to dial in your environment. Another thing that stood out right away is how quiet it is. Even running in a tent or small room, it doesn’t add a bunch of noise, which is clutch if you’ve got fans, lights, and everything else already going. Overall, if you’re looking for a simple, effective dehumidifier that does its job without being complicated or loud, this one definitely gets the job done. Well worth the money!! ... show more
Reviewed in the United States on April 11, 2026 by Joe's Grows

  • Not truly automated with Icontrol
This is the dumbest product that could be bought to help this system. This stupid thing only works if you stand there and poke the buttons manually it won't switch to anything else if you automate it. The Icontrol only has it on continuous mode and it never allows for hold or fan mode to come into affect. The instructions on this are absolutely useless as well. The least Mars hydro could do is have a step-by-step instructional video for people that can't understand their paper instructions. ... show more
Reviewed in the United States on September 14, 2026 by Lindsey Berggren

  • Best
Works great
Reviewed in the United States on September 7, 2026 by Daniel bone

  • Worth it
The tank could be bigger for those who don’t have drains for runoff but overall does its immaculately
Reviewed in the United States on September 16, 2026 by Renee lewis

  • Hold mode is relative, I guess.
It does not "Hold" humidity. It lets it spike 10 above the target humidity before turning on. I live in a high humidity area. So It rapidly reduces the humidity to my target, turns off, and the Humidity rapidly increases 10 points before turning on. This rapid change back and forth is not healthy for the plants. When it says hold you would think within a few points of your target, not 10 above. ... show more
Reviewed in the United States on June 26, 2026 by scott

  • Easy to use and assemble
Works well keeping humidity in range, produces a little bit of heat, but exhaust fan removes it. Quality unit
Reviewed in the United States on May 1, 2026 by Jeff Wheeler

  • Unable to keep humidity levels consistent, spikes and drops all day long
Works okay but is unable to keep my tent at a steady humidity, even with a humidifier. The humidity just spikes and falls all day long
Reviewed in the United States on May 29, 2026 by Christian

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