Quest Dual 165 Overhead Dehumidifier

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Sale price$2,564.99 Regular price$2,699.95


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Quest Dual 165 Overhead Dehumidifier

The Quest Dual 165 Overhead Dehumidifier extracts up to 165 pints of water, protecting your structure and indoor growing facility from mildew and mold accumulation. With a Plug & Play feature, this unit features an on-board dehumidistat for hands-free monitoring of indoor humidity.


  • Extremely Energy Efficient: The Quest Dual 165 is one of the most energy-efficient overhead type dehumidifiers on the market today. Removing 165 ppd, the Dual 165 can save you thousands a year compared to the competition. Best of all the Dual 165 can pay for itself giving you years and years of 24/7 trouble free operation.

  • Hands-Free Monitoring of Indoor Humidity: Unlike other dehumidifiers, this overhead Quest unit has an onboard dehumidistat and operates via three humidity levels – dry, normal, and humid. Depending on the settings, the unit will kick on when the humidity rises above the preset and will turn off when the humidity is reduced 4 – 6% relative humidity.

  • Overhead or Floor Installation: Unlike traditional dehumidifiers, the Quest Dual 165 Dehumidifier can be mounted overhead, freeing up floor space for a variety of growing needs. This installation can be completed via the Quest hanging bracket with chains, allowing for more room. While overhead installation is recommended, the Quest 165 can easily be installed on the ground floor for growers whose needs may change on a day-to-day basis.

  • Ideal for Mid Sized Areas: This unit is ideal for mid sized spaces where regulating humidity is really important, such as indoor grow operations, warehouses and storage facilities. Before purchasing, consider the facility square footage, frequency of feeding, and water net usage for selecting the right Quest dehumidifier. To get answers to any specific questions about your facility and which unit is right for you, please reach out to us directly to have an expert contact you with all the information you need. 

  • Easy Installation- Plug & Play: In addition to overhead installation, the Quest 165 Dehumidifier is a plug and play dehumidifier, requiring no intricate installation process with circuits and wiring for ground or floor installation. The units feature an on-board low voltage terminal block that makes it easy to wire to external controls.

  • Auto Restart: This unit automatically restarts after a power outage.

  • Cool & Humid Conditions: The unit will continue to operate even when it is cool or humid outside.

  • Daisy Chain Option: For easier wiring to an external control, this dehumidifier features a low voltage terminal block. This wiring system allows for overhead installation to save space. Additionally, you can wire up to six of these models together for use in large warehouse spaces. All six will be running off the same sensor on the Quest DEH 3000 R and need to be in the same room.

  • Made in the USA: The Quest Dual 165 is proudly made in the USA.

  • Long Lasting- 5 Year Warranty: These dehumidifiers are extremely strong and durable. Quest will back up your purchase with a 5-Year Warranty on the sealed system, and a 1-Year Warranty on Parts and Labor.

  • Quest Dual 165 Overhead Dehumidifier

  • Owners Manual

  • 2 Filter Doors

  • 4 Feet

  • 2 Compressor Plugs

  • 1 Drain Hose

  • 1 Drain Adaptor

  • Industrial Use: Indoor Gardening / Greenhouse / Warehouse

  • Pint Capacity: 165 pints

  • Low Temperature Operation (41 degrees F and Under): No

  • Low Grain Refrigerant (LGR): No

  • Desiccant: No

  • Internal Condensate Pump: No

  • Auto-Restart: Yes

  • Color: Cream

  • Maximum Amperage: 4.1 Amps

  • Humidistat: Yes

  • Wi-Fi Capable: No

  • Filter Type: 2' MERV-11

  • Bluetooth Capable: No

  • Continuous Drain Capable: Yes

  • Energy Factor: 3.2 L/kWh

  • Safety Certifications: ETL

  • Water Container: No

  • Power Cord Length: 10 ft.

  • Drain Hose Included: Yes

  • Weight: 140 lbs.

  • Automatic Defrost: Yes

  • Drain Hose Diameter: 0.75 in.

  • Lowest Operating Temperature: 56 degrees

  • Number of Fan Speeds: 1

  • Casters: No

  • Maximum Cubic Feet per Minute (CFM): 391 CFM

  • Depth: 38 in.

  • Energy Star: No

  • Full Bucket Indicator/Auto Shutoff: No

  • Maximum Wattage: 980 W

  • Refrigerant Type: R-410A

  • Number of Filters: 1

  • Voltage: 110-120 V

  • Width: 20.25 in.

  • Height: 21.75 in.

  • Ductable: Yes

  • Fan Operation Runs Only When Dehumidifying

  • Controls: Manual

  • Drain Hose Length: 8 ft.

Order shipment preparation takes 3 days. Once shipped orders usually take 2 weeks to be delivered. These are estimations; delivery can be delayed for reasons beyond our control. You can always contact us to know the exact delivery time once you placed an order with us. Have a look at our shipping policy here.

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