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Quest 706 Overhead Dehumidifier

Quest 706 Overhead Dehumidifier

Regular price £12,995.00 GBP
Regular price Sale price £12,995.00 GBP
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The Quest 706 Overhead Dehumidifier is a high-capacity humidity control system designed specifically for large indoor growing environments and commercial cultivation facilities. In sealed grow rooms and high-output hydroponic systems, plants release significant amounts of moisture through transpiration. Without powerful dehumidification, humidity can quickly build during vegetative growth and the bloom stage, increasing the risk of mould, poor nutrient uptake and reduced yields.

Designed and manufactured in the USA for controlled indoor cultivation, the Quest 706 is engineered for continuous operation while maintaining exceptional energy efficiency. Using patented coil technology and performance ratings based on real grow room conditions, it removes up to 335 litres of moisture per day at 26.7°C and 60% RH. Operating on 230V at 18.6 amps with a power consumption of 4150W, the unit delivers an impressive 3.4 litres per kWh efficiency, making it one of the most powerful and efficient dehumidifiers available for professional grow rooms. With dimensions of 33.8” H × 28.9” W × 44.7” L and a weight of 159 kg, it is built for large-scale environments where reliable humidity control is essential for stable plant development and consistent harvest quality.

Key Benefits

  • Removes up to 335 litres of moisture per day in grow room conditions

  • Highly efficient performance at 3.4 litres per kWh

  • Designed specifically for large indoor growing and hydroponic systems

  • Patented coil technology for superior moisture removal

  • Supports optimal humidity for strong plant health and bud density

  • Built for continuous operation in sealed grow rooms

  • Ductable intake and dual exhaust options for flexible airflow management

  • Integrated handles for easier positioning and installation

  • Low-voltage terminal block for connection to external environmental controls

  • Durable construction with 3-year manufacturer warranty

How It Solves Grow Problems

In professional indoor growing environments, plants can release large volumes of water vapour into the air as they transpire. During heavy vegetative growth and flowering, this moisture can quickly push humidity levels beyond optimal ranges. High humidity can cause mould outbreaks, slow root development, poor nutrient uptake and airy buds during the bloom stage.

The Quest 706 allows growers to maintain precise humidity control even in large sealed grow rooms with powerful lighting systems and dense plant canopies. By removing hundreds of litres of moisture daily, the system stabilises the environment, helping plants focus energy on strong root development, healthy vegetative growth and dense flowering that improves yield and overall plant quality.

How to Use

  1. Install the unit overhead or position it within the grow room to allow unrestricted airflow.

  2. The Quest 706 must be direct-wired to a suitable electrical supply by a qualified electrician.

  3. Connect the drainage outlet to an appropriate condensate drainage system.

  4. If required, install compatible duct kits for intake and dual exhaust to optimise airflow within the grow room.

  5. Connect environmental controllers to the low-voltage terminal block for automated humidity management.

  6. Operate the unit continuously during vegetative growth and the bloom stage to maintain stable humidity levels.

The Quest 706 is designed for growers who need reliable, high-capacity humidity control to maintain ideal conditions for indoor growing, hydroponic systems and large-scale cultivation facilities.



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Important Notice: While we make every effort to meet delivery timeframes, product availability and factors outside our control may cause delays. We will contact you immediately after your order if there are any delays or issues with shipping. There may be weight surcharges on some items, we will charge you exactly what it costs us to deliver the items to you and never aim to profit from delivery costs.