Quest 155 Dehumidifier


De-humidification is often over looked, the majority of gardeners believing their extraction system can handle any excess humidity, which is not always the case, even in circumstances where it can, the extraction system will be removing the desired heat which in turn causes a knock on effect to the potential yield of your plants. Utilising the correct de-humidification equipment and extraction for handling the heat will provide the grower with the tools required to achieve the all important VPD (Vapour Pressure Deffecit) parameters for your crop to flourish.

With the ever increasing development of LED grow light technology the transition of growers using them for the huge benefits is becoming the norm, the down side to LED growing  is the lack of excess intense heat production which burns off humidity in the growing environment causing high RH values extarction systems struggle to cope with, prevention is better than the cure the correct de-humidification equipment will help irradicate the potential for moulds & mildew pathogens to breed causing a severly damaged yield.

The Quest Dual 155 is one of the most energy-efficient commercial dehumidifiers on the market today. Removing 155 pints of water per day, this unit can save you thousands in energy costs every year compared to the competition. It gives you the flexibility to hang the unit overhead or use ductwork and keep the dehumidifier in a different space entirely.

Like all Quest products, the Dual 155 is Assembled in Madison, Wisconsin using the very best components and materials available.


  • Industry-leading efficiency simple Plug-N-Play setup
  • Superior air filtration (MERV-11 standard)
  • Quiet operation and superior high static pressure performance
  • Improvement of play health, growth and development
  • Precise environment control over humidity and temperature
  • Increase in the weight and quality of your yields

Operating range @ 26.66°C / 60% RH:

  • 155 Pints / 73.34 Litres Water Removal per day 
  • 7.3 Pints / 3.45 Litres Energy Factor Efficiency (Pints/kWh )
  • 8 AMP current Draw

Operating range @ 23.88°C / 50% RH:

  • 116 Pints / 46.66 Litres Water Removal per day 
  • 6.1 Pints / 2.88 Litres Energy Factor Efficiency (Pints/kWh )
  • 7.1 AMP current Draw
Power Consumption920 Watt
BTU (Total)10,500
BTU (Heat of Condensation)7,600
BTU (Motor Load)2,900
Operating Temperature13.33°C Min – 35°C Max
Unit Weight 63.5 KG
Unit Dimensions515mm (W) * 552mm (H) * 965mm (L) 
Refridgerant type & amountR410A @ 5KG
Air flow664 M³/h

*Drain port connection 3/4" NPT 

More Information
Product NameQuest 155 Dehumidifier
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