Quest Portable Dehumidifiers

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  • Capable of removing up to 55 litres of water per day from the air (depending on the model)
  • Can be moved between different locations, quickly and easily
  • Great for dragging into different areas when needed, such as when drying
  • Rugged and dependable, with a premium build-quality
  • Proudly designed and manufactured in the USA
  • Tested in the most extreme situations – used by major industries and military applications
  • Teams up nicely with the Dimlux Maxi Controller or the G.A.S. Enviro Controller
  • Comes with a purge function, allowing you to release collected water when needed
  • Works on a standard single phase mains supply (and comes with a 3-pin plug)

Powerful Humidity Control That's Easy to Transport

Quest Portable Dehumidifiers pull huge volumes of excess moisture from the air and, because they're on wheels, they're really easy to move around. They come in extremely handy when you're drying out produce, and they're built to specifications that make them a favourite in numerous industries and government organisations, including the military. Quest dehumidifiers are even trusted for use onboard naval destroyers! Buy one of these pieces of kit and rest assured that you've chosen wisely.

For more info on humidity in your grow room, visit the One Stop Blog.


How the Quest Portable Dehumidifier Works

Getting your environmental parameters within optimal ranges is the key to successful growing. Relative humidity plays a huge role in dictating the growth rates of your plants. When humidity levels are too low, the rate of transpiration increases, causing the plant to lose too much water. Likewise, when humidity levels are too high, growth rates slow down dramatically, and the door is also opened up to an array of moisture-related issues, like powdery mildew and botrytis (rot). As plants reach their later stages, they can put a lot of water vapour into the surrounding atmosphere. Much of this vapour will leave the room via your extraction system, but if humidity levels in the room are still too high, then you're going to need some extra help.

Note that they don't come with humidistats, so to get the best out of them, we recommend pairing them up with separate controller units that will switch them on whenever required, according to the conditions in your room. High-end controllers like the Dimlux Maxi Controller and the G.A.S. Enviro Controller are perfect for the job. Both systems are able to detect moisture levels in the air via humidity sensors. If moisture levels go above your ideal daytime or night-time setting then they'll switch on dehumidifying equipment as needed. Don't forget that, if you do decide to use it with a Maxi Controller, you'll also need the separately available humidity probe and Aux Box unit.

Both units come with a length of pipe and a connector which needs to be attached to water outlet point located at the side of the unit. Just put the other end of the pipe wherever you want to send the water, whether it be to your tank or down the drain.

To see our full Grow Room Humidifiers & Dehumidifiers range, click here


1 x Quest CDG 74 or CDG 114 dehumidifier, 1 x power cable with IEC connector and 3-pin plug, 1 x length of pipe (for draining water to your reservoir tank or drain)

How to Use the Quest Portable Dehumidifier

Which size dehumidifier do I need? A good rule of thumb is to make sure that your dehumidifier should be able to remove enough water to account for the water that you give to your plants. If you're giving them 100 litres per day, then make sure that your dehumidifier is able to cope with at least 75% of that volume of water, or 75 litres.

Set-up for this unit is quick and easy. All you need to do is plug it into a wall socket. Quest dehumidifiers come with power cables fitted with 3-pin plugs, so you're good to go.


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