HIGHER YIELDS, FEWER PROBLEMS

The right dehumidification setup can take your indoor grow operation to the next level. Say goodbye to crop losses from molds and other pests, and say hello to peak productivity with the Quest Dehumidifier.

Quest has the most energy-efficient dehumidifiers available, using the least electricity and removing more pints of water per kWh at the widest temperature range. Quest’s innovative design also creates the lightest heat load on your HVAC, paying for itself in energy savings.

Higher Crop Yields, Less Problems

One of the biggest challenges for the indoor farming industry is creating and maintaining a stable, consistent environment for plants to flourish. Without a reliable climate, you could lose your entire crop. Once you lose control of your environment, serious crop-crushing issues begin to take hold. The two main “crop-crushers” are concerns many growers face at one time or another: powdery mildew and botrytis, more commonly known as bud rot. Either of these issues can destroy a grow and lead to lost revenue.

Proper Dehumidification Can Make All The Difference

Whether it’s a greenhouse or a hydroponic grow the same principles come into play when you’re fine-tuning a setup. For moisture control and dehumidification, the three most important aspects are proper sizing, placement, and airflow. Quest engineers developed our product offerings to allow for flexible and customizable options to address all three.

Why use a Quest Dehumidifier?

The most energy-efficient dehumidifiers on the market
High capacity, high quality dehumidifiers with superior air filtration
The most complete humidity control product line
Superior U.S. technical support and service
A full warranty on every Quest product
Patented technology developed in Madison, Wisconsin

QUEST'S PATENTED TECHNOLOGY | M-CoRR™

Providing the most energy-efficeint dehumidification

The secret behind Quest’s unparalleled energy-efficiency is our patented multi-coil design, or as we like to call it: M-CoRR (short for Multi-Coil Refrigeration Recovery). You won’t find this technology anywhere else.

M-CoRR is engineered for maximum performance, allowing Quest to be the most energy-efficient and the best return on your investment, paying for itself in energy savings over time. M-CoRR’s innovative design performs better over a wider range of dew points, even at colder temperatures, and maintains capacity regardless of airflow fluctuations.

How Does Quest's M-CoRR Technology Work?

Traditional refrigerant dehumidifiers have a single refrigerant-filled evaporator coil that cools the air passing through it to extract the water from the air (because cold air holds less water). Once the air is cooled below the dew point, water condenses. Energy captured in the refrigerant during water removal is returned to the air in the form of heat at the second coil, the condenser.

The magic of Quest’s M-CoRR Technology is its multiple coils. Quest designed the typical evaporator coil into three separate refrigerant-filled coils: the pre-evaporator, evaporator, and recovery coil.

The first coil, the pre-evaporator, cools the air. The second coil, the evaporator, cools it even further to pull out the water. The third coil recovers the energy from pre-cooling the air to be recycled back into the evaporator for reuse.

What Are The Benefits Of Using 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.

Wide Operating Rage. Tighter Control

Thanks to its multiple coils, M-CoRR technology equips Quest to maintain performance better than traditional dehumidification equipment, even in cooler temperatures and dew points, with less frequent and faster defrost cycles. Less time spent in defrost neutralizes spikes in temperature and relative humidity, keeping the environment consistent and, in indoor cultivations, VPD dialed in.

Quest 100

High-Efficiency Series (with M-CoRR)

The NEW Quest 100 combines Quest’s latest technology with with the versatility and flexibility of its compact product line. This makes it the perfect dehumidifier for small projects and spaces.

M-CoRR Technology

The new Quest 100 pint dehumidifier boasts our unique M-CoRR technology. This patented multi-coil design provides the highest efficiencies available on the market, saving energy and dollars.

In addition to our industry-leading coil system, the Quest 100 features premium MERV-13 filtration, without compromising capacity or efficiency. This superior filtration helps to prevent the start or spread of bacteria, mold or other contaminants around your precious plants, equipment and crew with 65% more effectiveness than MERV-8 and 20% more effectiveness than MERV-11. MERV-13 filtration means healthier air and more control over your environment.

With a corrosion-resistant base and smaller footprint, the Quest 100 has flexible placement options, without the worry of rust, even after watering your plants or washing down your room.

Capacity: 100 Pints/Day
Efficiency: 7.5 Pints/kWh
Supply Voltage: 110-120V, 60 Hz
Current Draw: 5 Amps
M-CoRR Technology

Buy Quest 100 Now

Quest 155

Overhead Series

The Quest 155 dehumidifier is one of the most energy-efficient commercial dehumidifiers on the market today. Removing 155 pints of water per day, this unit can save you thousands in energy costs every year compared to the competition. It gives you the flexibility to hang the unit overhead or use ductwork and keep the dehumidifier in a different space entirely.

The Quest 155 dehumidifier is engineered and assembled in Madison, Wisconsin. It’s backed by a 5-year warranty. In addition, this unit meets California Title 24 requirements for both ducted (whole-home) and non-ducted (portable) installations.

Capacity: 155 Pints/Day
Efficiency: 8.5 Pints/kWh
Supply Voltage: 110-120V
Current Draw: 6.9 Amps

Buy Quest 155 Now

Quest 205

Overhead Series

The Quest 205 is our highest capacity 115V dehumidifier. Using 13.2 amps, the 205 removes 205 pints of water per day while running 46% more efficiently than Energy Star standards. It gives you the flexibility to hang the unit overhead or use ductwork and keep the dehumidifier in a different space entirely.

Like all Quest products, the 205 is Assembled in Madison, Wisconsin using the very best components and materials available.

Capacity: 200 Pints/Day
Efficiency: 7.7 Pints/kWh
Supply Voltage: 110-220V
Current Draw: 10.0 Amps

Buy Quest 205 Now

Quest 225

High-Efficiency Dehumidifier (with M-CoRR)

The 225 dehumidifier was built to answer the voltage concerns of commercial users. Almost as efficient as our 155 model, the Quest 225 is a favorite among those who choose the higher voltage route.

The 225 is engineered and assembled in Madison, Wisconsin using the very best components and materials available.

M-CoRR Technology

New Quest 225 units boast our unique patented M-CoRR technology. This multi-coil refrigeration design recycles excess heat to provide the highest efficiencies available on the market, reducing heat (BTUs) output into your space..

In addition to industry-leading MERV-13 filtration, the 225 features Quest’s filter compensation technology. Filter compensation technology which increases fan speed as the filter becomes increasingly clogged with pollen, powdery mildew and dirt. This speed adjustment allows for the same amount of air to pass through the filter without reducing the cubic feet for minute (CFM). As a result, the Quest 225 is able to work consistently and constantly to optimize your grow room environment with maximum energy efficiency and consistency.

Capacity: 225 Pints/Day
Efficiency: 7.6 Pints/kWh
Supply Voltage: 208-230V, 60 Hz
Current Draw: 6.1 Amps @208V / 5.5 Amps @230V
M-CoRR Technology

Buy Quest 225 Now

Quest 335

High-Efficiency Dehumidifier (with M-CoRR)

The Quest 335 dehumidifier is engineered specifically for commercial growers facing the heavy workload of cultivations filled with moisture-producing crops. At the core of Quest’s 335 features filter compensation, M-CoRR technology and digital controls with the versatility to work with external controls.

The Quest 335 uses a multi-coil design similar to the one used in the Quest 506. The end result is 350 pints of water pulled from the air every 24 hours at 80F and 60% relative humidity at 9.3 KWh.

When you combine the dollars associated with energy consumption, reduced air conditioning usage, and the consistent environment the filter compensation feature provides, the 335 is one of the most cost-effective units on the market.

M-CoRR Technology

Both Quest 335 units (208/230V and 277V) boast our unique patented M-CoRR technology. This multi-coil refrigeration design recycles excess heat to provide the highest efficiencies available on the market, reducing heat (BTUs) output into your space..

In addition to industry-leading MERV-13 filtration, the 335 features Quest’s filter compensation technology. Filter compensation technology which increases fan speed as the filter becomes increasingly clogged with pollen, powdery mildew and dirt. This speed adjustment allows for the same amount of air to pass through the filter without reducing the cubic feet for minute (CFM). As a result, the Quest 335 is able to work consistently and constantly to optimize your grow room environment with maximum energy efficiency and consistency.

Capacity: 345 Pints/Day
Efficiency: 8.2 Pints/kWh
Supply Voltage: 208-230V
Current Draw: 8.4 Amps @208V / 7.6 Amps @230V
M-CoRR Technology

Buy Quest 335 (240V) Now

Quest 335 - 277 Volt

High-Efficiency Dehumidifier (with M-CoRR)

The Quest 335 277V dehumidifier offer the same quality and features as our original Quest 335 208/230V units, but instead offer 277V voltages for use in industrial facilities. The 277V unit is a great fit for grow rooms, many of which traditionally have 277V outlets already installed for lighting. Additionally, these higher voltage units use less amperage, freeing up electricity for other equipment in the grow room.

M-CoRR Technology

In addition to industry-leading MERV-13 filtration, the 335 features Quest’s filter compensation technology. Filter compensation technology increases fan speed as the filter becomes increasingly clogged with pollen, powdery mildew and dirt. This speed adjustment allows for the same amount of air to pass through the filter without reducing the cubic feet for minute (CFM). As a result, the Quest 335 is able to work consistently and constantly to optimize your grow room environment with maximum energy efficiency and consistency.

Capacity: 345 Pints/Day
Efficiency: 8.2 Pints/kWh
Supply Voltage: 277V
Current Draw: 6.3 Amps
M-CoRR Technology

Buy Quest 335 (277V) Now

Quest 506

High-Efficiency Dehumidifier (with M-CoRR)

Powerful and efficient, the Quest 506 is the industry’s first 500-pint dehumidifier and is perfect for agricultural applications as well as tough commercial spaces. Its 506 pint capacity makes it one of the most powerful commercial dehumidifiers on the market.

M-CoRR Technology

The Quest 506 utilizes our unique patented M-CoRR technology. This multi-coil refrigeration design recycles excess heat to provide the highest efficiencies available on the market, while reducing heat (BTUs) output into your space.

Commonly used in indoor growing facilities, greenhouses, warehouses and other large industrial areas, the 506 dehumidifier is available for a variety of uses and installations. This Quest dehumidifier can be hung or placed on the floor, and offers an impressive MERV 13 filtration system.

Capacity: 500 Pints/Day
Efficiency: 9.2 Pints/kWh
Supply Voltage: 208-230V
Current Draw: 9.9 Amps (230V) | 10.9 Amps (208V)
M-CoRR Technology

Buy Quest 506 Now

Quest 506 - 277 Volt

High-Efficiency Dehumidifier (with M-CoRR)

Powerful and efficient, the Quest 506 277V dehumidifier is a high-capacity, high-efficiency unit which features out patented technology.

M-CoRR Technology

The Quest 506 277V boasts our unique patented M-CoRR technology. This multi-coil refrigeration design recycles excess heat to provide the highest efficiencies available on the market, while reducing heat (BTUs) output into your space.

Just like our original 506 230V units, the 506 pint capacity makes it one of the most powerful commercial dehumidifiers on the market.

The 277V voltage provides low amp draw, freeing up electricity for other equipment. Best of all these units can be installed on 277V without the additional installation of buck-boost transformers and the associated costs of wiring.

Capacity: 500 Pints/Day
Efficiency: 9.2 Pints/kWh
Supply Voltage: 277V
Current Draw: 8.2 Amps
M-CoRR Technology

Buy Quest 506 (277V) Now

Quest 746

High-Efficiency Dehumidifier (with M-CoRR)

The Quest 746 480V dehumidifier features our patented M-CoRRTM technology. This multi-coil design reuses refrigeration allowing Quest to provide industry leading efficiencies. It frees up electricity while using less amperage at a higher voltage.

M-CoRR Technology

The Quest 746 dehumidifier boasts our unique patented M-CoRR technology. This multi-coil refrigeration design recycles excess heat to provide the highest efficiencies available on the market, while reducing heat (BTUs) output into your space.

The Quest 746 480V dehumidifier is engineered and assembled in Madison, Wisconsin. It’s backed by a 5-year warranty. In addition, this unit meets California Title 24 requirements for both ducted (whole-home) and non-ducted (portable) installations.

Capacity: 730 Pints/Day
Efficiency: 8.3 Pints/kWh
Supply Voltage: 480V 3-Phase
Current Draw: 4.9 Amps
M-CoRR Technology

Buy Quest 746 Now

Commercial Dehumidifiers