Quest 746 Overhead Dehumidifier

Quest 746 Overhead Dehumidifier


$11,997.05 Regular price
  • In stock - departs in 2-3 business days
  • Inventory on the way

The Quest 746 480V Dehumidifier, featuring patented M-CoRR™ technology, stands out with industry-leading efficiencies. This technology uses less amperage at a higher voltage, freeing up space on your electrical panel for other equipment, a game changer in controlled environments. As one of Quest’s highest capacity units, the Quest 746 480V is designed to handle high humidity loads and large spaces. This versatile unit accommodates both ducted and non-ducted installations, offering flexibility in placement overhead or on the ground. 

The dehumidifier offers automatic restart after power outages and adheres to the highest safety standards, being UL Rated and ETL listed. Integrated handles and hanging points facilitate easy movement and installation, while MERV 13 filtration provides superior air quality by removing dust, pollen, mold, bacteria, and some viruses. Meets California Title 24 requirements.

Quest 746 Overhead Dehumidifier Features:

  • Overhead or ground placement
  • Integrated handles and hanging points
  • MERV 13 Filtration 
  • Widest operating range of temperature and humidity
  • Industry's lowest amp draw
  • UL rated and ETL listed
  • Auto restart after power outages

 Quest 746 Specifications:

  • Water Removal: 746 Pints/Day
  • Energy Factor: 3.5 L/kWh
  • Efficiency: 7.3 Pints/kWh
  • Operating Range: 56°F Min – 95°F Max
  • Power: 480V, 3 Phase, 60 Hz, 6.5 Amps
  • Unit Dimensions: 44.8 in. L x 28.9 in. W x 34.1 in. H

Additional Information:

Quest 746 Manual (PDF)
Quest 746 Specifications (PDF)


This item ships via Motor Freight Carrier - almost anywhere in the Contiguous United States

Motor Freight Requirements

  • The shipment must be delivered to a business or residence (a PO Box is invalid)
  • The delivery address must be able to accommodate a tractor/trailer as much as 70' in length
  • Someone must be present to receive and unload the shipment from the truck
  • Shipments and/or locations requiring a lift gate, inside delivery, and/or with limited access may incur additional charges by the carrier

Please contact Greenhouse Megastore Customer Service at 1-888-281-9337 if you have any questions about delivery to your specific address so we can ensure the smoothest delivery possible!

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