Quest Product Documents
Quest 70 Instructions Quest 100 Instructions Quest 105/155/205 Instructions Quest 110 Instructions Quest 150 Instructions Quest 165/255 Instructions Quest 355 Instructions Quest 506 Instructions Quest 746 Instructions Quest 876 Instructions Quest 70 Spec Sheet Quest 100 Spec Sheet Quest 105/155/205 Spec Sheet Quest 110/150 Spec Sheet Quest 165/225 Spec Sheet Quest 355 Spec Sheet Quest 506 Spec Sheet Quest 506 277V Spec Sheet Quest 746 Spec Sheet Quest 876 Spec SheetHIGHER 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.
Which Quest Dehumidifiers feature M-CoRR?
The Quest Dehumidifiers are broken apart by the High-Efficiency Series and the Standard Overhead Series. All Quest Dehumidifiser in the High-Efficiency Series feature the M-CoRR Technology. The Overhead Series are Quest's standar units that do not feature M-CoRR. Please note: Models in the high-efficiency series can still be installed overhead if that models allows.
Click the Quest models in the list below to be taken to detailed specifications for that model.
Quest High-Efficiency Series with M-CoRR
Quest 70
Overhead Series
Controlling humidity in compact, unconditioned commercial spaces presents unique challenges. Variable temperatures and constrained placement means you need a targeted solution. That’s where the Quest 70 comes in.
This compact, economical, high performing dehumidifier has one of the widest temperature and relative humidity operating ranges we offer.
The Quest 70 dehumidifier is engineered 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: 70 Pints/Day
- Efficiency: 5 Pints/kWh
- Supply Voltage: 110-120V
- Current Draw: 5.1 Amps
New 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
Quest 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 removes 105 pints of water per day. It gives you the flexibility to hang the unit overhead or use ductwork and keep the dehumidifier in a different space entirely.
The Quest Dual 105 dehumidifier is engineered and assembled in Madison, Wisconsin and is 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: 105 Pints/Day
- Efficiency: 8.8 Pints/kWh
- Supply Voltage: 110-120V
- Current Draw: 4.9 Amps
Quest 110
Overhead Series
The Quest Dual 110 dehumidifier is our smallest and lightest mid-size dehumidifier. It offers great water removal with easy portability — you can even hang it overhead — at an affordable price.
The Quest Dual 110 removes more water using less electricity, and will last years longer than the competition.
The Dual 110 is engineered and assembled in Madison, Wisconsin using the very best components and materials available. It’s backed by a 5-year warranty. In addition, this unit meets California Title 24 requirements for ducted (whole-home) installations.
- Capacity: 110 Pints/Day
- Efficiency: 5.8 Pints/kWh
- Supply Voltage: 110-120V
- Current Draw: 7.4 Amps
Quest 150
Overhead Series
The Quest Dual 150 removes almost 20 gallons a day and is is our most powerful mid-sized overhead type dehumidifier. Dollar per pint, the this unit is the most affordable professional-quality dehumidifier on the market today.
The Dual 150 is engineered and assembled in Madison, Wisconsin using the very best components and materials available.
The Quest Dual 150 dehumidifier is backed by a 5-year warranty. In addition, this unit meets California Title 24 requirements for both ducted (whole-home) installation.
- Capacity: 150 Pints/Day
- Efficiency: 4.8 Pints/kWh
- Supply Voltage: 110-120V
- Current Draw: 11 Amps
Quest 155
Overhead Series
The Quest Dual 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 Dual 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: 7.3 Pints/kWh
- Supply Voltage: 110-120V
- Current Draw: 8 Amps
Quest 205
Overhead Series
The Quest Dual 205 is our highest capacity 115V dehumidifier.Using 13.2 amps, the Dual 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 Dual 205 is Assembled in Madison, Wisconsin using the very best components and materials available.
- Capacity: 205 Pints/Day
- Efficiency: 5.7 Pints/kWh
- Supply Voltage: 110-220V
- Current Draw: 13.2 Amps
Quest 225
High-Efficiency Dehumidifier (with M-CoRR)
The Dual 225 dehumidifier was built to answer the voltage concerns of commercial users. Almost as efficient as our Dual 155 model, the Quest Dual 225 is a favorite among those who choose the higher voltage route.
The Dual 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: 8.2 Pints/kWh
- Supply Voltage: 208-230V, 60 Hz
- Current Draw: 5.3 Amps
- M-CoRR Technology
Quest 335
High-Efficiency Dehumidifier (with M-CoRR)
The Quest 335 dehumidifier is engineered specifically for commercial cannabis 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: 350 Pints/Day
- Efficiency: 9.3 Pints/kWh
- Supply Voltage: 208-230V
- Current Draw: 7.9A @208V / 6.9A @230V
- M-CoRR Technology
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
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, while 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 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: 350 Pints/Day
- Efficiency: 8.5 Pints/kWh
- Supply Voltage: 277V
- Current Draw: 6.8 Amps
- M-CoRR Technology
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: 506 Pints/Day
- Efficiency: 8.1 Pints/kWh
- Supply Voltage: 220-240V
- Current Draw: 11 Amps
- M-CoRR Technology
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: 506 Pints/Day
- Efficiency: 8.1 Pints/kWh
- Supply Voltage: 277V
- Current Draw: 10 Amps
- M-CoRR Technology
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: 746 Pints/Day
- Efficiency: 7.3 Pints/kWh
- Supply Voltage: 480V 3-Phase
- Current Draw: 6.5 Amps
- M-CoRR Technology
Quest 876
High-Efficiency Dehumidifier (with M-CoRR)
Powered by patented coil technology that isn’t available anywhere else, the Quest 876 dehumidifier is designed to work round-the-clock with maximum energy efficiency and flexibility. Featuring integrated handles and hang points, this powerhouse machine can be suspended overhead, freeing up valuable floor space.
M-CoRR Technology
The Quest 876 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 876 is engineered and assembled in Madison, Wisconsin, USA. It’s backed by a 5-year warranty providing confidence in your purchase. In addition, this unit meets California Title 24 requirements for ducted (whole-home) installation.
- Capacity: 876 Pints/Day
- Efficiency: 6.6 Pints/kWh
- Supply Voltage: 220-240V
- Current Draw: 24.7 Amps
- M-CoRR Technology
| Brand | Quest |
|---|---|
| SKU | QUEST-DUAL |
| Hazardous Material | false |
Quest Dehumidifiers Videos
Quest Dehumidifiers Questions & Answers
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 if I live in Arizona, New Mexico or a dry state, do I need a dehumidifier?
While it may be dry outdoors, growing in a sealed environment changes things a good bit. Growers using sealed rooms, even in the driest of outdoor climates, almost always require dehumidifiers. The higher quality of the grow room design and construction, the more critical a dehumidifier will be.
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.