Quest 335 208/230V High Efficiency Dehumidifier



The Quest 335 is a heavy-duty dehumidifier for commercial growers that removes over 50 gallons in large grow houses at only 9.3 KWh a day. The Quest 335 is one of the most cost-effective dehumidifiers in the industry thanks to its efficient performance. Featuring the multi-coil technology also seen in the Quest 506, the air is first cooled then water is pulled from the air, and once it reaches the third coil the energy is recovered to be reused. The Quest 335 consistently operates at an optimal 900 CMH with the variable speed fan, which adjusts speed automatically to compensate for changes in pressure. In comparison to a standard dehumidifier of the same size, the Quest 335 cuts operating costs up to $85,000 over a 5-year period.

  • Power: 1565 watts
  • Capacity: 350 pints/day
  • Overhead or ground placement

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Quest 335 208/230V High Efficiency Dehumidifier

The Quest 335 208/230V dehumidifier is engineered specifically for commercial cannabis growers facing the heavy workload of cultivations filled with moisture-producing crops. At the core of Quest’s 335 features are filter compensation, M-CoRR technology, and digital controls with the versatility to work with external controls.

The Quest 335 uses a multi-coil design similar to the one used in the Quest 506. The end result is 350 pints of water pulled from the air every 24 hours at 80F and 60% relative humidity at 9.3 KWh.

When you combine the dollars associated with energy consumption, reduced air conditioning usage, and the consistent environment the filter compensation feature provides, the 335 is one of the most cost-effective units on the market.

M-CoRR Technology

Both Quest 335 units (208/230V and 277V) boast our unique patented M-CoRR technology. This multi-coil refrigeration design recycles excess heat to provide the highest efficiencies available on the market, while reducing heat (BTUs) output into your space.

In addition to industry-leading MERV-13 filtration, the 335 features Quest’s filter compensation technology. Filter compensation technology which increases fan speed as the filter becomes increasingly clogged with pollen, powdery mildew and dirt. This speed adjustment allows for the same amount of air to pass through the filter without reducing the cubic feet for minute (CFM). As a result, the Quest 335 is able to work consistently and constantly to optimize your grow room environment with maximum energy efficiency and consistency.

The Quest 335 dehumidifier is engineered and assembled in Madison, Wisconsin. It’s backed by a 5-year warranty. In addition, this unit meets California Title 24 requirements for both ducted (whole-home) and non-ducted (portable) installations.

Key Features:

HIGH-EFFICIENCY PERFORMANCE: More efficient units have less heat output and free up electricity for other equipment

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

FILTER COMPENSATION TECHNOLOGY: Compensates for increased static pressure due to filters or ducting, providing consistent powerful airflow

Technical Specifications & Documents:

  • Water Removal: 350 Pints/Day @ 80 F, 60% RH
  • Efficiency: 9.3 Pints/kWh
  • Energy Factor: 4.3 Liters/kWh
  • Current Draw: 9 Amps
  • Supply Voltage: 208-230V
  • MCA*: 15A
  • MOP*: 20A
  • Recommended Breaker Size: 15A
  • Power: 1,565W
  • Power Cord: 14ga NEMA 6-15P (10′)
  • CFM: 900
  • BTU (Total): 20,300
    • BTU (Heat of Condensation): 15,200
    • BTU (Motor Load): 5,100
  • Control Type: Onboard digital controls with low voltage terminal block
  • Refrigerant Type: R410a
  • Refrigerant Amount: 4 lb 12 oz
  • Weight: 215 lb
  • Air Filter MERV Rating: MERV-13
  • Dimensions: 32.9” x 23.7” x 24.6”
  • Drain Port Connection: 3/4” Threaded NPT
  • Operating Temperature: 56 F Min – 95 F Max

View Quest 335 208/230V Spec Sheet

View Quest 335 208/230V Manual

View Quest 335 208/230V Quick Start Guide


Weight 255 lbs
Dimensions 23.5 × 32.9 × 24.4 in

Product Category

Air – Water – CO2


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