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Quest Dehumidifiers

Developed in Madison, Wisconsin, Quest 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.

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  • Quest 876 Dehumidifier | 876 Pints/Day | 220-240V - LED Grow Lights Depot
    $15,399.95 - $15,399.95
    $15,399.95
    $15,399.95 - $15,399.95
    $15,399.95

    Quest 876 Dehumidifier | 876 Pints/Day | 220-240V

    QUEST 876 HIGH-CAPACITY SERIES Powered by patented coil technology that isn’t available anywhere else, the Quest 876 dehumidifier is designed to w...

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    $15,399.95 - $15,399.95
    $15,399.95
    $15,399.95 - $15,399.95
    $15,399.95
  • Quest 746 Dehumidifier | 746 Pints/Day | 480V - LED Grow Lights Depot
    $11,499.95 - $11,499.95
    $11,499.95
    $11,499.95 - $11,499.95
    $11,499.95

    Quest 746 Dehumidifier | 746 Pints/Day | 480V

    QUEST 746 DEHUMIDIFIER | 746 PINTS/DAY | 480V The Quest 746 480V dehumidifier features our patented M-CoRRTM technology. This multi-coil design re...

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    $11,499.95 - $11,499.95
    $11,499.95
    $11,499.95 - $11,499.95
    $11,499.95
  • Quest 506 Dehumidifier | 506 Pints/Day | 220-240V - LED Grow Lights Depot
    $7,699.95 - $7,699.95
    $7,699.95
    $7,699.95 - $7,699.95
    $7,699.95

    Quest 506 Dehumidifier | 506 Pints/Day | 220-240V

     QUEST 506 DEHUMIDIFIER | 506 PINTS/DAY | 220-240V Powerful and efficient, the Quest 506 is the industry’s first 500-pint dehumidifier and is perf...

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    $7,699.95 - $7,699.95
    $7,699.95
    $7,699.95 - $7,699.95
    $7,699.95
  • Quest 506 Dehumidifier | 506 Pints/Day | 277V - LED Grow Lights Depot
    $7,699.95 - $7,699.95
    $7,699.95
    $7,699.95 - $7,699.95
    $7,699.95

    Quest 506 Dehumidifier | 506 Pints/Day | 277V

    QUEST 506 Dehumidifier | 506 Pints/Day |  277V Powerful and efficient, the Quest 506 277V dehumidifier features their patented M-CoRRTM technology...

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    $7,699.95 - $7,699.95
    $7,699.95
    $7,699.95 - $7,699.95
    $7,699.95
  • Quest 335 Dehumidifier | 335 Pints/Day | 208-230V - LED Grow Lights Depot
    $5,199.95 - $5,199.95
    $5,199.95
    $5,199.95 - $5,199.95
    $5,199.95

    Quest 335 Dehumidifier | 335 Pints/Day | 208-230V

    QUEST DEHUMIDIFIER | 335 PINTS PER DAY | 208-230V The Quest 335 dehumidifier is engineered specifically for commercial cannabis growers facing the...

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    $5,199.95 - $5,199.95
    $5,199.95
    $5,199.95 - $5,199.95
    $5,199.95
  • Quest 335 Dehumidifier | 350 Pints/Day | 277V - LED Grow Lights Depot
    $5,199.95 - $5,199.95
    $5,199.95
    $5,199.95 - $5,199.95
    $5,199.95

    Quest 335 Dehumidifier | 350 Pints/Day | 277V

    QUEST 335 DEHUMIDIFIER | 350 PINTS PER DAY | 277V The Quest 335 277V dehumidifiers offer the same quality and features as our original Quest 335 2...

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    $5,199.95 - $5,199.95
    $5,199.95
    $5,199.95 - $5,199.95
    $5,199.95
  • Quest Dual 205 Overhead Dehumidifier | 205 Pints/Day | 110-120V - LED Grow Lights Depot
    $3,979.95 - $3,979.95
    $3,979.95
    $3,979.95 - $3,979.95
    $3,979.95

    Quest Dual 205 Overhead Dehumidifier | 205 Pints/Day | 110-120V

    QUEST DUAL 205 OVERHEAD SERIES The Quest Dual 205 is the highest capacity 115V dehumidifier. Using 13.2 amps, the Dual 205 removes 205 pints of w...

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    $3,979.95 - $3,979.95
    $3,979.95
    $3,979.95 - $3,979.95
    $3,979.95
  • Quest Next Gen 225 Dehumidifier | 225 Pints/Day | 230V - LED Grow Lights Depot
    $3,299.95 - $3,299.95
    $3,299.95
    $3,299.95 - $3,299.95
    $3,299.95

    Quest Next Gen 225 Dehumidifier | 225 Pints/Day | 230V

    Quest Next Gen 225 Dehumidifier | 225 Pints/Day | 230V The New Quest 225 208-230V dehumidifier boasts Quest’s energy-efficient M-CoRR Technology, a...

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    $3,299.95 - $3,299.95
    $3,299.95
    $3,299.95 - $3,299.95
    $3,299.95
  • Quest Dual 165 Overhead Dehumidifier | 165 Pints/Day | 220-240V - LED Grow Lights Depot
    $2,699.95 - $2,699.95
    $2,699.95
    $2,699.95 - $2,699.95
    $2,699.95

    Quest Dual 165 Overhead Dehumidifier | 165 Pints/Day | 220-240V

    QUEST DUAL 165 OVERHEAD SERIES At only 3.6 amps, the Quest Dual 165 dehumidifier is one of the most energy-efficient commercial dehumidifiers on ...

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    $2,699.95 - $2,699.95
    $2,699.95
    $2,699.95 - $2,699.95
    $2,699.95
  • Quest Dual 155 Overhead Dehumidifier | 155 Pints/Day | 110-120V - LED Grow Lights Depot
    $2,699.95 - $2,699.95
    $2,699.95
    $2,699.95 - $2,699.95
    $2,699.95

    Quest Dual 155 Overhead Dehumidifier | 155 Pints/Day | 110-120V

    QUEST DUAL 155 OVERHEAD SERIES The Quest Dual 155 dehumidifier is one of the most energy-efficient commercial dehumidifiers on the market today. ...

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    $2,699.95 - $2,699.95
    $2,699.95
    $2,699.95 - $2,699.95
    $2,699.95
  • Quest Dual 150 Overhead Dehumidifier | 150 Pints/Day | 110-120V - LED Grow Lights Depot
    $2,055.62 - $2,055.62
    $2,055.62
    $2,055.62 - $2,055.62
    $2,055.62

    Quest Dual 150 Overhead Dehumidifier | 150 Pints/Day | 110-120V

    QUEST DUAL 150 OVERHEAD SERIES The Quest Dual 150 removes almost 20 gallons a day and is is our most powerful mid-sized overhead type dehumidifie...

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    $2,055.62 - $2,055.62
    $2,055.62
    $2,055.62 - $2,055.62
    $2,055.62
  • Quest Dual 110 Overhead Dehumidifier | 110 Pints/Day | 110-120V - LED Grow Lights Depot
    $1,690.52 - $1,690.52
    $1,690.52
    $1,690.52 - $1,690.52
    $1,690.52

    Quest Dual 110 Overhead Dehumidifier | 110 Pints/Day | 110-120V

    QUEST DUAL 110 OVERHEAD SERIES The Quest Dual 110 dehumidifier is our smallest and lightest mid-size dehumidifier. It offers great water removal ...

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    $1,690.52 - $1,690.52
    $1,690.52
    $1,690.52 - $1,690.52
    $1,690.52
  • Quest Dual 105 Overhead Dehumidifier | 105 Pints/Day | 110-120V - LED Grow Lights Depot
    $2,460.52 - $2,460.52
    $2,460.52
    $2,460.52 - $2,460.52
    $2,460.52

    Quest Dual 105 Overhead Dehumidifier | 105 Pints/Day | 110-120V

    QUEST DUAL 105 OVERHEAD SERIES The Quest Dual 105 is the most energy efficient dehumidifier in its class: Using only 4.9 amps, the Quest Dual 105...

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    $2,460.52 - $2,460.52
    $2,460.52
    $2,460.52 - $2,460.52
    $2,460.52
  • Quest 70 Pint Dehumidifier | 70 Pints/Day | 110-120V - LED Grow Lights Depot
    $1,499.95 - $1,499.95
    $1,499.95
    $1,499.95 - $1,499.95
    $1,499.95

    Quest 70 Pint Dehumidifier | 70 Pints/Day | 110-120V

    QUEST 70 HIGH-EFFICIENCY SERIES Controlling humidity in compact, unconditioned commercial spaces presents unique challenges. Variable temperature...

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    $1,499.95 - $1,499.95
    $1,499.95
    $1,499.95 - $1,499.95
    $1,499.95
  • Quest Hi-E Dry 195 Portable Dehumidifier | 192 Pints/Day | 115V - LED Grow Lights Depot
    $3,616.95 - $3,616.95
    $3,616.95
    $3,616.95 - $3,616.95
    $3,616.95

    Quest Hi-E Dry 195 Portable Dehumidifier | 192 Pints/Day | 115V

    Quest Hi-E Dry 195 Portable Dehumidifier Get the flexibility in dehumidification you need in an economical package with the Quest Hi-E Dry 195. Th...

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    $3,616.95 - $3,616.95
    $3,616.95
    $3,616.95 - $3,616.95
    $3,616.95
  • Quest CDG 174 Portable Dehumidifier | 176 Pints/Day | 110-120V - LED Grow Lights Depot
    $3,999.95 - $3,999.95
    $3,999.95
    $3,999.95 - $3,999.95
    $3,999.95

    Quest CDG 174 Portable Dehumidifier | 176 Pints/Day | 110-120V

    QUEST CDG 174 Portable SERIES Increase drying and curing times with the Quest CDG 174 Portable Dehumidifier. Assembled in Madison, Wisconsin, thi...

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    $3,999.95 - $3,999.95
    $3,999.95
    $3,999.95 - $3,999.95
    $3,999.95
  • Quest Hi-E Dry 120 Portable Dehumidifier | 120 Pints/Day | 110-120V - LED Grow Lights Depot
    Sold out
    $2,995.95 - $2,995.95
    $2,995.95
    $2,995.95 - $2,995.95
    $2,995.95

    Quest Hi-E Dry 120 Portable Dehumidifier | 120 Pints/Day | 110-120V

    Quest Hi-E Dry 120 Portable Dehumidifier Hi-E DRY 120 dehumidifiers are designed and built with emphasis on efficiency and durability. Hi-E DRY 12...

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    $2,995.95 - $2,995.95
    $2,995.95
    $2,995.95 - $2,995.95
    $2,995.95
    Sold out
  • Quest DEH 3000R Control - LED Grow Lights Depot
    $365.00 - $365.00
    $365.00
    $365.00 - $365.00
    $365.00

    Quest DEH 3000R Control

    Accurate Readings, Easy Interface Quest DEH 3000R remote wall mounted digital control for Quest ventilating dehumidifiers. Features fan/filter oper...

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    $365.00 - $365.00
    $365.00
    $365.00 - $365.00
    $365.00
  • Quest Air Filter for Dual Overhead 105, 155, 165, 205, 225 Dehumidifiers - LED Grow Lights Depot
    $21.72 - $21.72
    $21.72
    $21.72 - $21.72
    $21.72

    Quest Air Filter for Dual Overhead 105, 155, 165, 205, 225 Dehumidifiers

    MERV 11 STANDARD PLEAT FILTER – 16″ X 20″ X 2″ Replacement MERV-11 filter for the Quest PowerDry 4000, CDG174 and Dual 105, 155, 165, 205 and 225 D...

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    $21.72 - $21.72
    $21.72
    $21.72 - $21.72
    $21.72
  • Quest Dual 110/150 MERV-8 Replacement Filter - LED Grow Lights Depot
    $25.00 - $25.00
    $25.00
    $25.00 - $25.00
    $25.00

    Quest Dual 110/150 MERV-8 Replacement Filter

    QUEST MERV 8 STANDARD PLEAT FILTER – 17.5″ X 14″ X 1.75″ MERV-8 filter that measures 17.5″ X 14″ X 1.75″ Fits Quest Dual 110 and 150 Dehumidifiers.

    $25.00 - $25.00
    $25.00
    $25.00 - $25.00
    $25.00
  • Quest 70 Pint MERV-13 Replacement Filter - LED Grow Lights Depot
    $25.00 - $25.00
    $25.00
    $25.00 - $25.00
    $25.00

    Quest 70 Pint MERV-13 Replacement Filter

    QUEST MERV 13 FILTER – 11″ X 9″ X 1″ The Quest 70 Pint is equipped with a high-efficiency MERV-13 media filter. For optimal performance it is recom...

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    $25.00 - $25.00
    $25.00
    $25.00 - $25.00
    $25.00
  • Quest 70 Pint Dehumidifier Hanging Kit - LED Grow Lights Depot
    $102.00 - $102.00
    $102.00
    $102.00 - $102.00
    $102.00

    Quest 70 Pint Dehumidifier Hanging Kit

    HANGING KIT FOR QUEST 70 The Quest 70 may be suspended with a Hanging Bracket Kit. Includes 4 eyebolts, 4 cables with carabiners, and 2 brackets.  ...

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    $102.00 - $102.00
    $102.00
    $102.00 - $102.00
    $102.00
  • Quest Overhead Dehumidifier Hanging Bracket - LED Grow Lights Depot
    $31.38 - $31.38
    $31.38
    $31.38 - $31.38
    $31.38

    Quest Overhead Dehumidifier Hanging Bracket

    HANGING BRACKET FOR QUEST 105, 155, 165, 205, 225 AND 185 COOL Quest Overhead Dehumidifier Hanging Bracket for Dual 105, 155, 165, 205 and 225. Req...

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    $31.38 - $31.38
    $31.38
    $31.38 - $31.38
    $31.38
  • Quest 506 Exhaust Duct Kit - LED Grow Lights Depot
    $215.00 - $215.00
    $215.00
    $215.00 - $215.00
    $215.00

    Quest 506 Exhaust Duct Kit

    QUEST EXHAUST DUCT KIT FOR QUEST 506 AND 506 277V The Exhaust Duct Kit allows duct work to be attached to the intake on the Quest 506 Dehumidifier....

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    $215.00 - $215.00
    $215.00
    $215.00 - $215.00
    $215.00
  • Quest 506 Intake Duct Kit - LED Grow Lights Depot
    $555.00 - $555.00
    $555.00
    $555.00 - $555.00
    $555.00

    Quest 506 Intake Duct Kit

    INTAKE DUCT KIT FOR QUEST 506, 506 277V, 746 480V, 876 AND 706 50-HZ The Intake Duct Kit allows ductwork to be attached to the intake on the Quest ...

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    $555.00 - $555.00
    $555.00
    $555.00 - $555.00
    $555.00
  • Quest Dual 110/150 Supply Duct Kit - LED Grow Lights Depot
    $135.00 - $135.00
    $135.00
    $135.00 - $135.00
    $135.00

    Quest Dual 110/150 Supply Duct Kit

    SUPPLY DUCT KIT FOR QUEST DUAL 110 AND 150 The Supply Duct Kit allows a limited amount of duct work to be attached to the intake on Quest Dual 110 ...

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    $135.00 - $135.00
    $135.00
    $135.00 - $135.00
    $135.00
  • Quest 70 Supply/Return Duct Kit - LED Grow Lights Depot
    $120.00 - $120.00
    $120.00
    $120.00 - $120.00
    $120.00

    Quest 70 Supply/Return Duct Kit

    Quest 70 Supply/Return Duct Kit This is a Supply/Return Duct Kit for the Quest 70 Pint Dehumidifier. It includes two 8 in duct collars that attach ...

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    $120.00 - $120.00
    $120.00
    $120.00 - $120.00
    $120.00
  • Quest Supply Air Duct Collars for Overhead Dehumidifiers - LED Grow Lights Depot
    $77.00 - $77.00
    $77.00
    $77.00 - $77.00
    $77.00

    Quest Supply Air Duct Collars for Overhead Dehumidifiers

    SUPPLY DUCT KIT FOR DUAL 105, 155, 165, 205, 225, AND 185 COOL This accessory allows a limited amount of ductwork to be attached to the air outlet ...

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    $77.00 - $77.00
    $77.00
    $77.00 - $77.00
    $77.00
  • Quest Return Air Duct Collar for Overhead Dehumidifiers - LED Grow Lights Depot
    $111.00 - $111.00
    $111.00
    $111.00 - $111.00
    $111.00

    Quest Return Air Duct Collar for Overhead Dehumidifiers

    QUEST RETURN DUCT KIT FOR DUAL 105, 155, 165, 205, 225, AND 185 COOL This accessory allows a limited amount of ductwork to be attached to the intak...

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    $111.00 - $111.00
    $111.00
    $111.00 - $111.00
    $111.00
  • Quest F9 Air Mover - LED Grow Lights Depot
    $448.82 - $448.82
    $448.82
    $448.82 - $448.82
    $448.82

    Quest F9 Air Mover

    QUEST F9 AIR MOVER FAN Prevent stagnant, damp air This low-profile air mover circulates 925 cubic feet of air per minute and can still fit into tig...

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    $448.82 - $448.82
    $448.82
    $448.82 - $448.82
    $448.82
  • Quest Condensate Pump - LED Grow Lights Depot
    $150.00 - $150.00
    $150.00
    $150.00 - $150.00
    $150.00

    Quest Condensate Pump

    Overcoming Gravity Humidity can happen anywhere–not just next to a floor drain. Gain flexibility in where you install your dehumidifier with the T...

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    $150.00 - $150.00
    $150.00
    $150.00 - $150.00
    $150.00
  • Quest 100 Dehumidifier | 105 Pints/Day | 120V - LED Grow Lights Depot
    $1,999.95 - $1,999.95
    $1,999.95
    $1,999.95 - $1,999.95
    $1,999.95

    Quest 100 Dehumidifier | 105 Pints/Day | 120V

    Quest 100 Dehumidifier The NEW Quest 100 combines Quest’s latest technology with with the versatility and flexibility of its compact product line....

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    $1,999.95 - $1,999.95
    $1,999.95
    $1,999.95 - $1,999.95
    $1,999.95

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