Quest Dehumidifiers & Accessories

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Specifications

Model Capacity (PPD) Airflow (CFM) Power (W) Voltage Dimensions (in) Weight (lb)
Quest 70 Dehumidifier - 115 Volt 70 150 580 115V 9" x 12" x 1" 55
Quest 100 Dehumidifier - 115 Volt 105 280 540 115V 12" x 14" x 1" 60
Quest Dual 110 Dehumidifier 110 365 787 115V 14.5" x 19.4" x 26" 85
Quest Dual 150 Overhead Dehumidifier 150 430 1300 115V 14.5" x 21" x 26" 95
Quest Dual 155 Overhead Dehumidifier 155 500 750 115V 26.8" x 20.9" x 23.6" 130
Quest Dual 205 Dehumidifier - 13.2 Amps - 120V 205 526 1525 120V 20.25" x 21.75" x 37.88" 150
Quest Dual 225 Overhead Dehumidifier - 230 Volt 225 526 1500 220–240V   160
Quest 225 Dehumidifier - 230 Volt 225 630 1230 208/230V 26.8" x 20.9" x 23.6" 130
Quest 335 Dehumidifier - 240V 345 900 1700 277V 20" x 22" x 2" 215
Quest 335 Dehumidifier - 277V - 335 PPD 345 900 1700 277V 20" x 22" x 2" 215
Quest 506 Commercial Dehumidifier - 277V - 506 Pint 500 1150 2250 277V 44.7" x 27.4" x 29" 275
Quest 506 Commercial Dehumidifier - 240V - 506 Pint 506 1350 2700 220–240V 44.8" x 28.9" x 29.0" 280
Quest 746 Commercial Dehumidifier - 480V - 746 Pint 746 1750 4300 480V 3Ï• 44.8" x 28.9" x 29.0" 340
Quest 876 Commercial Dehumidifier - 1-Phase 240V - 876 Pint 876 1850 5500 230V 44.8" x 28.9" x 29.0" 340
Empty Title Price Quantity In Cart
EQ156
Quest 876 Commercial Dehumidifier - 1-Phase 240V - 876 Pint
$12,199.59
MSRP: $14,639.51
Margin: 20%

Qty: 0
0
O
OUT OF STOCK
EQ155
Quest 506 Commercial Dehumidifier - 240V - 506 Pint
$6,129.54
MSRP: $7,355.44
Margin: 20%

Qty: 2

Commerce, CA: 2

Sacramento, CA: 0

0
STK

PRODUCT IN STOCK

EQ154
Quest 506 Commercial Dehumidifier - 277V - 506 Pint
$6,129.54
MSRP: $7,355.44
Margin: 20%

Qty: 1

Commerce, CA: 1

Sacramento, CA: 0

0
STK

PRODUCT IN STOCK

EQ161
Quest 506 Intake Kit
$712.20
MSRP: $854.64
Margin: 20%

Qty: 0
0
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OUT OF STOCK
EQ160
Quest 506 Exhaust Kit
$338.11
MSRP: $405.73
Margin: 20%

Qty: 0
0
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OUT OF STOCK
EQ109
Quest 335 Dehumidifier - 277V - 335 PPD
$4,845.20
MSRP: $5,814.24
Margin: 20%

Qty: 0
0
O
OUT OF STOCK
EQ335
Quest 335 Dehumidifier - 240V
$4,845.20
MSRP: $5,814.24
Margin: 20%

Qty: 0
0
O
OUT OF STOCK
EQ105
Quest Dual 225 Overhead Dehumidifier - 230 Volt
$3,296.05
MSRP: $3,955.26
Margin: 20%

Qty: 0
0
O
OUT OF STOCK
EQ104
Quest Dual 205 Dehumidifier - 13.2 Amps - 120V
$3,280.38
MSRP: $3,936.46
Margin: 20%

Qty: 1

Commerce, CA: 1

Sacramento, CA: 0

0
STK

PRODUCT IN STOCK

EQ101
Quest Dual 110 Dehumidifier
$1,508.70
MSRP: $1,810.44
Margin: 20%

Qty: 0
0
O
OUT OF STOCK

Details

Quest dehumidifiers are the industry standard for high-capacity, energy-efficient moisture control in commercial and horticultural environments. Designed and built in the USA, the Quest product line spans from compact 70-pint units to powerful 876-pint machines—delivering reliable humidity management for grow facilities, greenhouses, warehouses, and other demanding applications.

Core Features Across the Line

  • High-Capacity Performance: With capacities from 70 to 876 PPD (pints per day), Quest offers targeted solutions for every environment size, from small rooms to large-scale commercial grows.

  • Energy Efficiency: Many Quest models lead the category in moisture removal per kWh, helping operators reduce utility costs and meet sustainability benchmarks.

  • Versatile Installation: Units are available in freestanding and overhead configurations with flexible ducting options, making integration seamless regardless of space constraints.

  • Robust Construction: Designed for continuous operation in tough conditions, Quest dehumidifiers feature durable chassis, corrosion-resistant coils, and washable filters for long-term reliability.

  • Precise Environmental Control: High static pressure ratings, integrated humidistat options, and optional digital controls allow for fine-tuned environmental regulation.

Product Range Overview

Model Capacity (PPD) Airflow (CFM) Power (W) Voltage Dimensions (in) Weight (lb)
Quest 70 70 150 580 115V 9 × 12 × 1 55
Quest 100 105 280 540 115V 12 × 14 × 1 60
Quest Dual 110 110 365 787 115V 14.5 × 19.4 × 26 85
Quest Dual 150 150 430 1300 115V 14.5 × 21 × 26 95
Quest Dual 155 155 500 750 115V 26.8 × 20.9 × 23.6 130
Quest Dual 205 205 526 1525 120V 20.25 × 21.75 × 37.88 150
Quest Dual 225 225 526 1500 220–240V 160
Quest 225 225 630 1230 208/230V 26.8 × 20.9 × 23.6 130
Quest 335 (240V) 345 900 1700 277V 20 × 22 × 2 215
Quest 335 (277V) 345 900 1700 277V 20 × 22 × 2 215
Quest 506 (277V) 500 1150 2250 277V 44.7 × 27.4 × 29 275
Quest 506 (240V) 506 1350 2700 220–240V 44.8 × 28.9 × 29.0 280
Quest 746 746 1750 4300 480V 3ϕ 44.8 × 28.9 × 29.0 340
Quest 876 876 1850 5500 230V 44.8 × 28.9 × 29.0 340

Applications

Quest dehumidifiers are ideal for:

  • Indoor cultivation

  • Controlled environment agriculture (CEA)

  • Dry storage and warehouse operations

  • Food processing and specialty manufacturing

  • Commercial and industrial drying systems

Why Quest

Trusted by growers and commercial operators nationwide, Quest dehumidifiers combine rugged performance with unmatched efficiency and flexibility. Backed by strong technical support and a leading warranty program, Quest products are built for the long haul—and built in the USA.

CA Prop. 65 Warning WARNING: This product may expose you to chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.