Quest 746 480v High Capacity Dehumidifier


SKU: ENV-Q-DE746480

The Quest 746 dehumidifier removes up to 746 pints of water a day at 7.3 pints per kilowatt hour. Quest's patented multi-coil technology for models 506 and up raises the bar in energy efficiency to bring you massive savings when it comes to operating costs. In the 3 coil system, the first coil cools the air prior to the dehumidification process. As it passes through the second coil the air is brought below the dew point so water can be removed. Once it passes through the third coil the air is dehumidified and energy is collected and then recycled to improve efficiency.  The 746 model consumes less electricity with its 480v power source, freeing up usage for other important equipment.

  • Power: 4266 watts
  • Capacity: 746 pints/day
  • Overhead or ground placement

Discount Automatically Applied in Cart!

Large project? Contact us for a quote!


More Info




Quest 746 480v High Capacity Dehumidifier

The Quest 746 480V dehumidifier features our patented M-CoRRTM Technology. This multi-coil design reuses energy during dehumidification allowing it to be the most energy-efficient 480-volt dehumidifier on the market. 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.

Key Features:

HIGH EFFICIENCY: No dehumidifier is more efficient

PATENTED MULTI-COIL TECHNOLOGY: Achieves highest efficiencies available in the market

INDUSTRY’S LOWEST AMP DRAW: More efficient units have less heat output and free up electricity for other equipment

Technical Specifications & Documents:

  • Water Removal: 746 Pints/Day @ 80 F, 60% RH
  • Efficiency: 7.3 Pints/kWh
  • Energy Factor: 3.5 Liters/kWh
  • Current Draw: 6.5 Amps
  • Supply Voltage: 480V
  • MCA*: 10A
  • MOP*: 15A
  • Recommended Breaker Size: 10A
  • Power: 4,266W
  • Power Cord: Hardwire Only
  • CFM: 1,750
  • BTU (Total): 48,400
    • BTU (Heat of Condensation): 33,900
    • BTU (Motor Load): 14,500
  • Control Type: Onboard digital controls with low voltage terminal block
  • Refrigerant Type: R410a
  • Refrigerant Amount: 6 lb 4 oz
  • Weight: 340 lb
  • Air Filter MERV Rating: MERV-13
  • Dimensions: 44.8” x 28.9” x 34.1”
  • Drain Port Connection: 3/4” Threaded NPT
  • Operating Temperature: 56 F Min – 95 F Max

View Quest 746 480V Spec Sheet

View Quest 746 480V Manual


Weight 420 lbs
Dimensions 48 × 36 × 40 in

Product Category

Air – Water – CO2


Only logged in customers who have purchased this product may leave a review.

    Your Cart
    Your cart is emptyReturn to Shop