Monster Gardens Monster Gardens's hydroponic grow store industry providers offer the grow market’s best products at wholesale prices with customer service and FREE SHIPPING!
235 Classic Ct Suite B Rohnert Park, CA 94928, USA
Monster Gardens Phone: (707) 588-8844

(707) 588-8844   SALES & SUPPORT MON-FRI. 9:30AM-5:30PM PST  

Selection will refresh the page with new results

Quest Dual 150 Overhead Dehumidifier

Out of stock


Contact us at [email protected] or (707) 588-8844 for freight quote.

Quest Dual 150 Overhead Dehumidifier

Contact us at [email protected] or (707) 588-8844 for freight quote.

The Quest Dual 150 removes almost 20 gallons a day and is is our most powerful mid-sized overhead type dehumidifier.Dollar per pint, the Quest Dual 150 is the most affordable professional-quality dehumidifier on the market today.

Triple Threat

Compact, Cost-Effective, and High Performing

MERV 8 Filtration

Captures dangerous airborne particles


Intake and exhaust kits are available

Low Amp Usage

Environmentally-friendly and good on energy

Flexible Controls

Never needs to be reset


Quest Duals require no installation

Dual Air Distrubition

For optimal dry air circulation throughout spaces

Made in the USA

Built to last

Protect your indoor crops and structure with the Quest Dual 150 Overhead Dehumidifier. Designed for light commercial indoor growing, this powerful dehumidifier features an onboard dehumidistat that is perfect for hands-free monitoring of humidity. Additional features include fan settings, gravity drain, and more.

Effective Moisture Removal

Light watering and feeding can cause significant humidity to accumulate in your indoor garden space, and moisture can wreak havoc on plants and the structure with mold spores and mildew. The efficient Quest 150 effectively removes humidity from the air, reducing the opportunity for mildew and mold growth.

The overhead dehumidifier features 430 CFMs of airflow, pushing hot, dry air around the room while removing 150 pints of moisture under standard operating (AHAM) conditions. Additionally, two fan settings allow you to customize your usage. Set the fan to “ON” to run continuously, or opt for the Auto mode, which is only cuts on when the unit detects high humidity.

Onboard Dehumidistat

Set your ideal humidity level with the onboard dehumidistat. The onboard dehumidistat continually monitors the indoor humidity levels so gardeners can focus on their business. Pre-set the Quest 150 to one of 3 humidity levels
  • Drier (20-30% humidity)
  • Normal (45-55% humidity) - Recommended
  • Humid (80-90% humidity)

When the humidity levels return to normal or are 4-6% below one of these pre-sets, the dehumidifier will automatically shut down.

Gravity Drain Options

Using the power of gravity, the Quest 150 pulls condensate away from the dehumidifier using gravity drain. Use one of these 4 gravity drain options:
  • Standard Loop
  • Pretzel Loop
  • Floor Bend
  • PVC Trap – Recommended for ceiling installation

Ceiling & Floor Installation

The Quest 150 is a powerful dehumidifier – removing up to 20 gallons a day of condensate – yet is small, versatile, and affordable for smaller growers and gardens. The dual installation makes set up and usage even easier.
  • Ceiling Mount:

    For growers really short of square footage, mounting to the ceiling helps pull moisture away from the ceiling and remains out of the way.
  • Floor or Ground:

    When space isn’t an issue, the Quest 150 is small enough to remain out of the way but still effectively pull moisture out of the air.
  • Ducting:

    Use an optional Quest supply duct kit to move for use in an out-of-sight space or in multiple areas.

Easier Moisture Removal

Humidity can happen anywhere–not just next to a floor drain. Add the Quest Universal Condensate Pump move moisture horizontally and vertically. It offers the easiest moisture removal available and mounts directly to the unit, increasing flexibility in where your dehumidifier can be installed. The pump features a low profile to fit the unit's horizontal design. It is long-lasting, unobtrusive, and provides multiple options for the location of the dehumidifier.

Additional Features:

  • Dual Air Distribution:

    Features the Quest Dual Air Distribution for optimal dry air circulation throughout spaces.
  • 430 CFMs:

    Pushes 430 CFMs of dry air throughout small greenhouses and indoor gardens.
  • Low Amp Usage:

    Low amp usage of 7.1.
  • Operation Temperature:

    Operates in temperatures between 56 – 95 degrees Fahrenheit.
  • Cool & Humid Conditions:

    The unit will continue to operate even when it is cool or humid outside.
  • Fan Switch:

    Features two fan switch options:
  • Fan On

    – Runs continuously
  • Fan Auto

    – Operates only while dehumidifying
  • MERV-8 Filter:

    Carefully removes particles from your indoor air with the MERV 8 filter.
  • Auto Restart:

    During a power outage, the unit will automatically resume operation.
  • Made in America:

    The Quest 205 is proudly made in America.


More Information
SKU cc_ac_139
UPC 859029004205
Manufacturer Part Number 4034230
Distributor Part Number HGC700816, 700816