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Quest 335 High-Efficiency Dehumidifier

SKU: qu12521  |  Model: 4046200
5.0
Rated 5.0 out of 5 stars
1 Review
$6,19995
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Manufacturer's Warranty

5-Year Limited Warranty

What's In The Box?
  • Quest 335 High-Efficiency Dehumidifier
  • On-Board Humidistat
  • MERV 13 22 × 20 × 2-Inch Filter
  • Hardware Kit
  • Owner's Manual and Other Documents

Info & Guides

Description

The Quest 335 High-Efficiency Dehumidifier is designed for commercial cannabis growers and other moisture-producing crops to control high humidity levels in grow rooms and greenhouses. Newly redesigned for greater performance and accessibility, this efficient dehumidifier can take on heavy workloads from larger grow houses. See Sylvane's review of the Quest 335 High-Efficiency Dehumidifier.

 

This versatile, high-efficiency unit also applies to storage areas, theaters, retail spaces, multi-family homes, schools, and restaurants.

A MERV-13 filter is included for capturing pollen, powdery mildew, and dirt. This ductable dehumidifier can be installed overhead or on the ground, featuring a digital control interface with an external control option. Proudly made in the USA.

Note: This is available as a 208/230 V model with a NEMA 6-15P plug, or 277 V model with a NEMA L7-15P plug.

Filter Compensation for Consistent Humidity

The Quest 335 features unique Filter Compensation Technology at its core, with a pressure switch connected to a variable-speed fan. When a change in pressure is detected, the fan slowly ramps up speed to maintain the desired CFM airflow, resulting in a consistent humidity level for better indoor growing results.

This technology allows the same amount of air to flow through the filter as it becomes dirty so that no CFM is lost and humidity is more effectively controlled. Set the fan button to Auto to activate filter compensation.

On-Board or External Control

Equipped with an onboard humidistat, the Quest 335 dehumidifier can be controlled manually by programming the desired set point and selecting high, low, or auto fan speeds. Only when the auto mode is selected is the filter compensation technology activated, and the fan speed automatically adjusts to pressure changes.

Connect the 335 to an external control using its low-voltage terminal block, and you can set and adjust the desired relative humidity level remotely. You can also daisy-chain up to three dehumidifiers on a single external control.

Redesigned for Efficiency and Performance

The Quest 335 High-Efficiency Dehumidifier has been redesigned with the R-454B refrigerant, which offers greater operating efficiency over previous models. This model provides considerable efficiency, drawing 8.5 pints of moisture from the air per kWH (at AHAM conditions) or 6 pints per kWH at 75 degrees F and 50 percent RH.

Easy to Duct

If your indoor growing space doesn't allow for the Quest 335's inside placement, it can be ducted into the grow house or room. The Quest 335 supply and return duct kit, which can be purchased separately, includes everything required for ducting.

Additional Features

  • Drainage: The 3/4-inch threaded NPT port allows for gravity draining. If users require a lift, they can install an optional Quest condensate pump kit accessory.
  • Indicator Lights: The indicator lights will illuminate for filter replacement and reset while the automatic defrost runs.
  • Dark Mode: In dark mode, the lights on this model will remain on for 20 seconds before going dark. This is useful for continued operation during periods of darkness for plants.
  • Integrated Handles: The integrated handles allow users to easily transport and place the dehumidifier.
  • Installation Options: The Quest 335 can be hung overhead or installed on the ground.
  • Long Power Cord: This model has a 10-foot power cord with a 14-gauge NEMA 6-15P plug face for 208-240V or NEMA L7-15P for 277 V.

Sylvane's Expert Take

The Quest 335 High-Efficiency Dehumidifier is a top choice for commercial growers. It offers exceptional humidity control with its advanced M-CORR technology and can pull up to 345 pints of water per day. Its robust, suitable design and Filter Compensation Technology ensure stable humidity levels and airflow even in challenging environments.

  • Premium Quality: Regarding quality and performance, the Quest 335 High-Efficiency Dehumidifier is one of the top models on the market today for its size and class. Quest products are known for their quality engineering and innovative designs, so customers can rest assured they are getting the best.
  • M-CORR Technology: Quest’s patented M-CORR multi-coil technology allows this dehumidifier to easily outperform other dehumidifiers regarding water removal and efficiency. 

Specifications

    Key Specifications

    • Internal Condensate Pump
      No
    • Number of Speeds
      208-240V: 3
      277V: Variable
    • Pint Capacity (pints)
      345.0

    General

    • Certifications
      208-240V: ETL, UL, California Title 24
      277V: ETL, California Title 24
    • Color
      White
    • Controls
      Electronic
    • Drain Hose Diameter (in.)
      0.75
    • Energy Factor (L/kWh)
      3.8
    • Filter Type
      MERV-13
    • Lowest Operating Temperature (degrees)
      56
    • Maximum Cubic Feet per Minute (CFM) (CFM)
      900.0
    • Number of Fan Speeds
      208-240V: 3
      277V: Variable
    • Number of Filters
      1
    • Recommended For
      208-240V: Indoor Growing/Greenhouse, Warehouse
      277V: Indoor Growing/Greenhouse, Warehouse, Gyms/Fitness Centers
    • Refrigerant Type
      R-454B
    • California Residents
      ⚠ WARNING: This product can expose you to chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.p65warnings.ca.gov.

    Power

    • Maximum Amperage (Amps)
      208-240V: 8.4
      277V: 6.3
    • Maximum Wattage (W)
      1700
    • Plug Face Type
      208-240V: 6-15P
      277V: L7-15P
    • Power Cord Length (ft.)
      6
    • Power Supply
      Plug-In
    • Voltage (V)
      208-240V: 208-230
      277V: 277

    Dimensions

    • Depth (in.)
      208-240V: 24.6
      277V: 32.9
    • Height (in.)
      23.7
    • Weight (lbs.)
      215
    • Width (in.)
      208-240V: 32.9
      277V: 24.6

    Additional Features

    • Additional Features
      208-240V: Auto-Restart, Air Filter, Continuous Drain Capable, Humidistat, Automatic Defrost, Ductable, Carrying Handle, Filter Change Indicator
      277V: Auto-Restart, Humidistat, Air Filter, Automatic Defrost, Continuous Drain Capable, Ductable, Carrying Handle, Humidity Display, Drain Hose Included, Filter Change Indicator, Alarm

    Warranty

    • Manufacturer's Warranty
      5-Year Limited Warranty

Frequently Asked Questions

What is Sylvane's shipping and return policy?
Sylvane offers free standard shipping on orders over $45 to the lower 48 states. Orders under $45 ship for $5.95. Shipping to Hawaii, Alaska, and Canada may cost extra, and we don’t ship to other international locations. Most orders ship within 1–2 business days. We’re committed to your shopping satisfaction, so we offer a 30-Day Money-Back Guarantee on our products and a no-hassle return process.

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Customer Reviews

5.0
Rated 5.0 out of 5 stars
Based on 1 review
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1 review
  • CG
    Canna g. d.
    I recommend this product
    Rated 5 out of 5 stars
    4 years ago
    Great product--operating as described & better than expected

    This unit is incredible! Simply pulling water out of the air—have no doubt it will keep my plants from molding in flower. My humidity level is down now to under 50%. Seems to be running at a consistent rate—interested to see how this functions over time.

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