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Quest 876 High-Efficiency Commercial Dehumidifier

In stock


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

Quest 876 High-Efficiency Commercial Dehumidifier

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

Powered by patented coil technology that isn’t available anywhere else, the Quest 876 is designed to work round-the-clock with maximum energy efficiency and flexibility. Like all Quest products, the Quest 876 is made in the USA using the very best components and materials available.

MERV 13 Filtration

Captures dangerous airborne particles


Intake and exhaust kits are available

UL Rated And ETL Listed

The highest T7 standard

High Efficiency Performance

No dehumidifier is more efficient

Integrated Handles

For easy movement

Patent Pending Coil Technology

Unlike anything else on the market

Overhead Or Ground Placement

Built to fit what works for your space

Made in the USA

Built to last

Designed specifically for large industrial spaces and commercial greenhouses, the Quest 876 is the highest-capacity commercial dehumidifier available. It offers long-term, continuous moisture removal to maximize any commercial space.

Take advantage of trusted quality, unbeatable efficiency and powerful moisture removal in any tough environment. You'll also need less units in large areas since it removes 876 pints of moisture per day at AHAM.

Top Quest High Efficiency Dehumidifier Benefits

The Quest 506 is is common in large commercial environments thanks to its unique design:
  • The most powerful dehumidifier available: It removes 876 pints of moisture at AHAM conditions, meaning less units used in large commercial grow areas or industrial spaces.
  • Trusted American-made quality with 5-year warranty.
  • One of the most efficient dehumidifiers on the market, removing 6.6 pints per kWh.
  • Patented coil technology pre-cools and post-heats the air so the unit works less to remove moisture from the air. This design simplifies the process and maximizes efficiency.

Note: This is a direct wire dehumidifier and can’t be used with a power cord. A remote humidistat is required for use. The Quest DEH 3000 R is designed to work with the Quest 506 dehumidifier.

Keeping Healthy and Comfortable Conditions

Transform an unworkable commercial environment into one that allows for ideal working and operational conditions. In addition to improving comfort, Quest dehumidifiers of this size prevent mold growth, corrosion and odors. Using a Quest overhead dehumidifier also saves floor space and keeps the drying unit out of the way.

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:

  • Superior MERV 13 Filtration:

    Air exiting the dehumidifier is filtered with a MERV 13 filter, which catches tiny non-visible particles like smoke, smog, bacteria, microscopic allergens and debris.
  • Ideal Operating Temperature:

    Use this powerful dehumidifier in tough environmental conditions between 56 and 110 degrees F.
  • Easy to Hang:

    Top lift points make it easier to hang from the ceiling than previous dehumidifier options. Save floor space by easily hanging this unit from the ceiling.
  • Simple to Move:

    Quest designed this powerful dehumidifier to easily fit between doors since it’s less than 3 feet wide.
  • External Wiring & Daisy Chain Option:

    Its low voltage control works with any building automation with a 24V system. This wiring schema also allows for daisy chaining multiple units together.
  • Conserve Space and Power:

    Use less dehumidifiers to keep your commercial space at the ideal humidity level with this high-powered dehumidifier.
  • Fan Operation Options:

    There are two fan operating options: The fan can always run or it can run only when this model is dehumidifying.


More Information
Manufacturer Part Number4037600
Distributor Part NumberHGC700943, 700943