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Quest 876 Overhead Dehumidifier - 230V
Quest 876 Overhead Dehumidifier - 230V - Green Thumb Depot

Quest 876 Overhead Dehumidifier - 230V

by Quest
SKU: 13945

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The Quest 876 Overhead Dehumidifier - 230V is a high-end, ultra-capacity dehumidifying solution, engineered to tackle the most challenging and expansive environments requiring moisture control. This premium unit boasts an extraordinary ability to remove up to 876 pints of moisture per day, positioning it as an ideal choice for extremely large spaces such as vast commercial grow facilities, sprawling industrial complexes, or extensive storage warehouses. Operating on a 230V power supply, the Quest 876 combines immense dehumidifying power with energy efficiency, making it a formidable tool in large-scale humidity management.

Designed for overhead installation, the Quest 876 maximizes available space, allowing for unobtrusive yet effective moisture control. This design feature is particularly beneficial in environments where floor space is at a premium. The unit's energy efficiency is a standout aspect, significantly reducing electricity consumption and operational costs, which is vital in settings requiring continuous and extensive dehumidification.

Built to the highest standards of durability and performance, the Quest 876 features robust construction and intuitive, user-friendly controls. This ensures not only a long service life but also ease of use and maintenance. The Quest 876 Overhead Dehumidifier is the epitome of advanced dehumidification technology, offering unmatched capacity and efficiency for those who require the very best in moisture control for large-scale and demanding environments.

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Quest 876 Pint Overhead Dehumidifier

Elevate your indoor grow operation with the Quest Dehumidifier, the epitome of energy efficiency and productivity. This powerhouse removes more water per kWh at a wide temperature range, minimizing electricity use and lightening the HVAC heat load. Bid farewell to crop losses from molds and pests and embrace higher yields. Quest's innovative design tackles powdery mildew and botrytis issues, safeguarding your revenue. Their dehumidifiers offer flexible options for proper sizing, placement, and airflow control, ensuring an optimal environment for your indoor cultivation success.

Product Overview

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Warranty Policy

Product Overview

Invest in success with Quest Dehumidifier for energy-efficient indoor grow operations. Its innovative design minimizes HVAC heat load, ensuring rapid ROI. Combat threats like powdery mildew and bud rot with Quest's proper sizing, placement, and airflow control options. Whether in a greenhouse or hydroponic system, Quest provides flexible and customizable solutions for optimal conditions and crop protection.

Quest: Pioneering Energy-Efficient Dehumidifiers for Optimal Performance

Quest leads the market with the most energy-efficient dehumidifiers, offering high capacity, superior air filtration, and a comprehensive humidity control product line. Renowned for top-quality solutions, Quest ensures optimal conditions for various applications and provides superior U.S. technical support. Every Quest product comes with a full warranty, showcasing the brand's commitment to quality and customer satisfaction. With innovative patented technology developed in Madison, Wisconsin, Quest is a trusted name for unparalleled efficiency and technical excellence in dehumidification.

Energy Efficiency

High Capacity and Quality

Smart Technology

Superior Air Filtration

Comprehensive Product Line

U.S. Technical Support and Service

Full Warranty

Patented Technology

QUEST'S PATENTED TECHNOLOGY | M-CoRR™

Quest sets the industry standard by providing the most energy-efficient dehumidification solutions, a feat achieved through our exclusive patented multi-coil design, known as M-CoRR (Multi-Coil Refrigeration Recovery). This groundbreaking technology is unique to Quest, setting our dehumidifiers apart from the competition.

M-CoRR is meticulously engineered for maximum performance, positioning Quest as the pinnacle of energy efficiency and offering the best return on investment.

The technology's innovative design excels across a broad spectrum of dew points, even in colder temperatures, and maintains optimal capacity regardless of fluctuations in airflow. This ensures that Quest dehumidifiers not only stand out for their unparalleled efficiency but also prove to be a wise investment, paying for themselves through significant energy savings over time.

How Does Quest's M-CoRR Technology Work?

Quest's M-CoRR Technology revolutionizes dehumidification by utilizing three separate coils - pre-evaporator, evaporator, and recovery coil. This innovative approach enhances efficiency by kickstarting the cooling process, extracting water efficiently, and recycling energy. Quest's commitment to pushing technology boundaries ensures superior moisture control and energy utilization in dehumidification systems.

Highlighted features of M-CoRR

Highest Efficiency.
Lowest Energy Usage

Higher efficiency = lower electricity usage per pint of water removed. M-CoRR technology pulls more water out of the air per kilowatt hour than any other dehumidification technology. Period.

Less Heat Output

Inefficiency = Heat. It takes energy to run the fan and compressor in your dehumidifier. During dehumidification, this energy converts to heat that warms your room. The more energy your dehumidifier consumes, the more heat it expels. Quest dehumidifiers featuring M-CoRR technology are the most efficient dehumidifiers in the world, which means they put less heat in your environment.

More Capacity,
Smaller Footprint

Your space is valuable. Dehumidifiers powered by M-CoRR are more compact. This technology averages over 20% smaller than traditional LGR dehumidification technology of the same capacity.

Quest Dehumidifier 876 - Overhead Series

Discover the unparalleled efficiency of the Quest 876 dehumidifier, driven by exclusive patented M-CoRR technology. This groundbreaking multi-coil refrigeration design not only operates round-the-clock with maximum energy efficiency but also recycles excess heat, minimizing heat output into your space. The machine's versatility is enhanced by integrated handles and hang points, allowing it to be conveniently suspended overhead, optimizing valuable floor space.

Engineered and assembled in Madison, Wisconsin, USA, the Quest 876 is a testament to quality craftsmanship and innovation. With a 5-year warranty, it instills confidence in its durability and performance. Moreover, this dehumidifier meets California Title 24 requirements for ducted (whole-home) installation, ensuring it aligns with stringent industry standards. Elevate your dehumidification experience with the Quest 876 – a reliable and efficient solution tailored to your space.


FAQ Section

How do I size a dehumidifier for a grow room?
Plants transpire about 97% of the water they receive, so the amount of water your plants consume is approximately the amount that needs to be removed each day. For example, 30 plants each receiving ½ gallon per day is an average of 15 gallons water per day. Every gallon of water is 8 pints. This example works out to 120 pints per day.
Isn’t my air conditioner a dehumidifier?
Yes, but there are issues with this solution.
1. Air conditioners remove water only when they are running. In most cases when the grow lights are off, the air conditioner is off as well. Lights-off time is when humidity is most problematic.
2. Using an air conditioner to dry a room will overcool the room, potentially causing plant stress. This will also use a significantly greater amount of energy than a Quest commercial dehumidifier.
3. The more energy efficient the air conditioner, the less moisture it actually removes. An efficient air conditioner is a terrible dehumidifier.
4. The re-heat method. Some air conditioners offer an optional heating coil as a dehumidification option. Essentially, by adding artificial heat to the room, the air conditioner is forced to operate when the lights are off and thus the air conditioner removes water. While this method works, and can be used in a pinch, it’s a poor long term solution and will use 4-8x the energy as a Quest dehumidifier. 4-8x the energy use is roughly equal to $5,000-$25,000 per year in unnecessary energy consumption.
What is the ideal humidity?
Because every plant is different, it is hard to pick just one number. However, most research indicates that 45-55% RH is the safe zone where plants are healthy, spore germination is unlikely, and pests find the environment unappealing.
How much money does a Quest dehumidifier save me in electricity?
Quest is the leader in energy efficiency and one of our models is the most energy efficient dehumidifier ever built. Depending on the model, Quest dehumidifiers can save commercial growers $100-$200 a month in electricity per unit. That’s $1,200-$2,500 per dehumidifier per year.
Can the water be reused?
Yes, Quest dehumidifiers produce neutral pH, very low TDS water. This water is safe for all plants, even consumable ones.
Is there a warranty for this product?
Please check the warranty tab on this page for warranty information.
How long will shipping take?
Please check our shipping policy here for shipping information.
What is the return policy?
Please check our return policy here for return policy information.

Quest 876 Specifications

@ 80° F/60% RH
Water Removal 876 Pints/Day
Efficiency 6.6 Pints/kWh
Energy Factor 3.1 Liters/kWh
Current Draw 24.7 Amps
Power 5,500 Watts
BTU (Total) 58,200
BTU (Heat) 39,600
BTU (Motor Load) 18,600
@ 75° F/50% RH
Water Removal 614 Pints/Day
Efficiency 5.2 Pints/kWh
Energy Factor 2.5 Liters/kWh
Current Draw 22.4 Amps
Additional Specifications Quest 876
Part Number 4037600
Dehumidifier Type Refrigerant Dehumidifier
CFM 1,850
Operating Temperature 56°-95° F
Supply Voltage 220–240 VAC, 1 Phase, 60 Hz
Unit Dimensions 329" W X 33.8" H X 44.8" L
Unit Weight 350 lb
Control Type Requires External Control
Air Filter MERV Rating MERV 13
Air Filter Dimensions 18" x 20" x 2"
Power Cord Hardwire Only
Refrigerant Type R410A
Refrigerant Amount 4 lb 8 oz
Drain Port Connection 3/4" Threaded NPT
Warranty 5 Year

Items in the box

Quest 876 Dehumidifier Unit

Power Cord

Drain Hose

User Manual

Warranty Information

Warranty Policy

Please Click Here to view our return and warranty policy