Collection:

Quest

24 products

PRECISE HUMIDITY CONTROL BY QUEST EXPERTISE AND ENGINEERING

Developed in Madison, Wisconsin, our dehumidifiers have set the gold standard in energy efficiency, durability, reliability and flexibility. With a full five-year warranty, Quest humidity control products come in a wide array of sizes and options, allowing you to customize and design your perfect environment for your industry’s specific needs. Additionally, we deliver everything you need to know when it comes to HVAC design, specification, selection, installation and operation for every size of facility.

Regular price $5,329.95
Sale price $5,329.95
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Quest Dual 205 Overhead Dehumidifier The Quest Dual 205 was designed to be placed overhead and out of the way, but can also be placed at ground level for plug and play operation. The Dual 205 was d...
Regular price $49.95
Sale price $49.95
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Quest Air Filter Replacement MERV-11 filter for the Quest PowerDry 4000, CDG174 and Dual 105, 155, 165, 205 and 225 Dehumidifiers. Captures particles (including mold spores) down to 1 micron. Filte...
Regular price $3,499.95
Sale price $3,499.95
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Quest Dual 155 Overhead Dehumidifier The Quest Dual 155 was designed to be placed overhead and out of the way, but can also be placed at ground level for plug and play operation. It is designed to ...
Regular price $3,329.95
Sale price $3,329.95
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Quest Dual 105 The Quest Dual 105 was designed to be placed overhead and out of the way, but can also be placed at ground level for plug and play operation. The Quest Dual 105 was designed to be th...
Regular price $2,395.95
Sale price $2,395.95
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Quest Dual 110 The Quest Dual 110 was designed to be placed overhead and out of the way, but can also be placed at ground level for plug and play operation. The Dual 110 was designed to provide imp...
Regular price $38.95
Sale price $38.95
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Quest Replacement Filter  MERV-8 filter that measures 14 in x 17-1/2 in x 2 in. Fits Quest Dual 110 and 150 Dehumidifiers. Hawthorne Garden Company has no role in providing technical support or ...
Regular price $459.95
Sale price $459.95
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Quest DEH 3000R Wall Mounted Humidistat Quest DEH 3000R remote wall mounted digital control for Quest ventilating dehumidifiers. Features fan/filter operation and programmable ventilation timer. It...
Regular price $4,998.95
Sale price $4,998.95
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Quest Dual 225 Overhead Dehumidifier - 230 Volt The Quest Dual 225 is the industry’s first 230 V commercial dehumidifier. Like all Quest products, it can be placed at ground level for plug and play...
Regular price $79.95
Sale price $79.95
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QUEST BRACKET HANGING XT (2) Quest BRACKET HANGING XT.*Requires 1 pack of 2 BRACKETS per humidifier.Detailed description:- Fits models : Quest Dual 105, 155, 165, 185, 205, 255- Weight : 1.7 lbs- D...
Regular price $4,999.95
Sale price $4,999.95
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Quest CDG174 Dehumidifier   The Quest CDG174 dehumidifies 176 pints/day @ 80°F/60% RH and only uses 10 Amps. The Quest CDG174 is constructed of the highest-quality components and is protected by a ...
Regular price $221.95
Sale price $221.95
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The Exhaust Duct Kit allows duct work to be attached to the intake on the Quest 506 Dehumidifier. This allows the dehumidifier to be located outside of the indoor garden. This two-piece kit comes w...
Regular price $574.95
Sale price $574.95
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Quest 506 Intake Duct Kit The Intake Duct Kit allows duct work to be attached to the intake on the Quest 506 Dehumidifier, so it can be located outside of the indoor garden. This two-piece kit come...
Regular price $3,499.95
Sale price $3,499.95
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Quest Dual 165 At only 3.4 amps, the Quest Dual 165 is one of the most energy-efficient commercial dehumidifiers on the market today. Removing 165 pints of water per day, this unit saves thousands ...
Regular price $1,699.95
Sale price $1,699.95
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Quest Dehumidifier 70 Pint Quest 70 Pint Dehumidifier was designed to be placed overhead and out of the way, but can also be placed at ground level for plug and play operation. The Quest 70 Pint De...
Regular price $199.95
Sale price $199.95
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Quest H5 HEPA Air Mover Replacement Filter Replacement filter for the Quest H5 HEPA Air Mover. Hawthorne Garden Company has no role in providing technical support or warranty fulfillment on Ques...
Regular price $174.95
Sale price $174.95
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The Quest 70 may be suspended with a Hanging Bracket Kit. Includes 4 eyebolts, 4 cables with carabiners, and 2 brackets. Hawthorne Garden Company has no role in providing technical support or wa...
Regular price $139.95
Sale price $139.95
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Quest Dual 110/150 Supply Duct Kit INCLUDES 2 10″ DUCT COLLARS, SCREWS AND FOAM FOR SECURELY SEALING TO UNIT.
Regular price $199.95
Sale price $199.95
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QUEST RETURN DUCT KIT FOR DUAL 105-155-205-225-185   INCLUDES DUCT PLATE WITH 12″ DUCT COLLAR, SCREWS, AND FOAM FOR SECURELY SEALING TO THE UNIT
Regular price $19.95
Sale price $19.95
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Pre-filter for the Quest H5 HEPA Air Mover. Hawthorne Garden Company has no role in providing technical support or warranty fulfillment on Quest Dehumidifiers. The end user must contact Quest di...
Regular price $7,447.95
Sale price $7,447.95
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Quest 335 hyper-efficient standalone overhead dehumidifier featuring patented multi-coil refrigeration system, filter life compensating smart fan, patent-pending hybrid expansion valve, onboard dig...