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Quest 225 Overhead 225 Pint Dehumidifier
Quest 225 Overhead 225 Pint Dehumidifier

Quest 225 Overhead 225 Pint Dehumidifier

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SKU: 4046100

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The Quest 225 Overhead Dehumidifier is a high-efficiency solution designed for large-scale humidity control in demanding environments. This powerful unit is capable of extracting up to 225 pints of moisture per day, making it an excellent choice for extensive indoor areas such as large grow operations, commercial storage facilities, or industrial spaces. Engineered to operate effectively in overhead installations, the Quest 225 maximizes space utilization while delivering consistent and robust dehumidification performance. Its design focuses on energy efficiency, ensuring significant moisture removal with minimal energy consumption, which is beneficial for both the environment and operational costs. The dehumidifier is built with durability in mind, featuring robust construction and user-friendly controls, making it a reliable and straightforward solution for maintaining optimal humidity levels. The Quest 225 Overhead Dehumidifier is ideal for those who require a powerful, efficient, and space-saving dehumidification system to protect their investments from the adverse effects of excessive moisture.
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Quest 225 Overhead 225 Pint Dehumidifier

Control demanding commercial environments with the Quest 225 Overhead Dehumidifier, engineered to remove 225 pints daily at an efficient 7.6 pints per kilowatt-hour. Its patented M-CoRR Technology recycles excess heat to reduce operating costs and lessen HVAC demand. Compact construction, onboard digital controls, optional external-control connections, MERV-13 filtration, and integrated lift and hanging points support flexible overhead or ground placement. The 208-230V design is engineered and assembled in Madison, Wisconsin, for dependable high-capacity humidity management.

Product Overview

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What's Included?

Warranty Policy

Product Overview

The Quest 225 combines 225-pint daily moisture removal with M-CoRR efficiency, compact dimensions, and flexible 208-230V operation. Digital onboard controls simplify humidity management while supporting an optional external controller. MERV-13 filtration, auto restart, integrated handles, and overhead hanging points help maintain cleaner air and dependable humidity control across demanding commercial spaces.

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

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Important Notice

Found a Quest unit cheaper somewhere else? Read this first.

Quest sets a minimum advertised price, so what you see here is the lowest any authorized dealer can publicly list. If another site shows a Quest unit for less, they are not authorized, even if they say they are, and that puts your warranty at risk. Quest can refuse service and support on an unauthorized purchase.

The good news: as an authorized Quest dealer, we'll beat any legitimate price, we just can't post it publicly. Call, text, or email and we'll get you the best price available, plus same-day commercial and bulk quotes.

🔍 Want the best legitimate Quest price?
Contact us directly. As an authorized Quest retailer, we may be able to offer better pricing by phone, text, or email — especially for bulk orders.
📧 info@greenthumbdepot.com 📞 (833) 416-0375

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 patented M-CoRR Technology uses a specialized multi-coil refrigeration system to recycle excess heat during moisture removal. Recovering this energy improves water-removal efficiency while reducing the total heat released into the surrounding space. Lower BTU output can decrease air-conditioning runtime, helping the Quest 225 deliver reliable humidity control with lower overall operating costs.

Highlighted features of M-CoRR

High Efficiency.
Lower Energy Demand

Delivering 7.6 pints per kilowatt-hour, the Quest 225 removes substantial moisture while reducing energy required per pint. M-CoRR Technology supports efficient, cost-conscious operation in demanding spaces.

Reduced Heat Output

M-CoRR Technology recycles excess heat rather than releasing unnecessary BTUs into the space. Reduced heat output can lessen air-conditioning runtime, limit additional HVAC demand, and support more efficient environmental control throughout continuous commercial dehumidification operations.

Compact Design,
Flexible Placement

Compact dimensions, integrated carrying handles, and built-in hanging points simplify movement and installation. Operate the Quest 225 freestanding or mount it overhead using approved threaded rods.

Quest 225 - High Efficiency Series

The Quest 225 is a compact, high-efficiency 208-230V dehumidifier engineered for demanding commercial and industrial environments. It removes 225 pints of moisture daily at 80°F and 60% relative humidity while achieving 7.6 pints per kilowatt-hour. Patented M-CoRR Technology recycles excess heat, helping reduce total BTU output and additional air-conditioning demand. Digital onboard controls provide straightforward humidity management with an optional external-control connection. MERV-13 filtration captures more airborne particulates without sacrificing performance, while auto restart restores previous settings after an outage. Integrated handles and hanging points support freestanding, ducted, or overhead installation. The unit is engineered and assembled in Madison, Wisconsin.

Installation Options For 208/230V

Freestanding dehumidifier

Ceiling-Mounted

Can be mounted overhead with use of 3/8″ Threaded Rod

P-Trap Requirements

Follow the diagram above for proper drain trap setup.

⚠️
Important Notice

Found a Quest unit cheaper somewhere else? Read this first.

Quest sets a minimum advertised price, so what you see here is the lowest any authorized dealer can publicly list. If another site shows a Quest unit for less, they are not authorized, even if they say they are, and that puts your warranty at risk. Quest can refuse service and support on an unauthorized purchase.

The good news: as an authorized Quest dealer, we'll beat any legitimate price, we just can't post it publicly. Call, text, or email and we'll get you the best price available, plus same-day commercial and bulk quotes.

🔍 Want the best legitimate Quest price?
Contact us directly. As an authorized Quest retailer, we may be able to offer better pricing by phone, text, or email — especially for bulk orders.
📧 info@greenthumbdepot.com 📞 (833) 416-0375

Customer Reviews


Trusted by authentic customer reviews from verified buyers worldwide.
If I could rate 6 stars I would!
If I could rate 6 stars I would! My representative Edouard B. has been shockingly responsive! Like - oh my god - an actual SERVICE oriented company. He's dug into my odd connectivity issues I've been having - and following up in an AMAZINGLY timey manner. No shit. You'll be impressed! (And the price was also unbeatable, quick shipping...it's all PERFECT). Thank you Ed!!
Jim D
Customer service was outstanding great…
Customer service was outstanding great people to deal with they understand your needs and they will do their best to fulfill them there is no way I can complain about them because they are the best help out there.Thanks green thumb depot. I’ll definitely order from them again
Glenn Appleton
The machine is doing just what my…
The machine is doing just what my salesman told it would do (I appreciate you Ed thank you) . The machine is what we need for our new business we’re starting up, soon to be llc and licensed. We are getting a lot of clients wanting our services. Ed I will be needing more of your products, thank you again.
Freddie
Fantastic
Great prices, fantastic customer service, and mind blowing shipping! Incredible. Will be using again and telling anyone in need.
Kar
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FAQ Section

What is the Quest 225's daily moisture-removal capacity?
At 80°F and 60% relative humidity, the Quest 225 removes up to 225 pints of moisture per day. At 75°F and 50% relative humidity, it removes 130 pints per day, allowing performance to remain clearly defined across common commercial operating conditions.
What electrical supply does the Quest 225 require?
The Quest 225 operates on 208-230V, single-phase, 60 Hz electrical service. At rated 80°F and 60% relative humidity conditions, it draws 6.1 amps at 208V or 5.5 amps at 230V. The unit uses a NEMA 6-15P plug and requires a recommended 15-amp breaker. Electrical installation must follow applicable national and local codes.
How are humidity settings controlled on the Quest 225?
The Quest 225 includes onboard digital controls for straightforward humidity management. A low-voltage terminal block also supports an optional external controller, allowing the unit to integrate with a broader environmental-control strategy when remote or centralized operation is preferred.
Can the Quest 225 be installed overhead or freestanding?
Yes. The compact Quest 225 can operate as a freestanding unit or be mounted overhead using 3/8-inch threaded rods. Integrated handles and hanging points simplify positioning, while ducting options support installation layouts suited to the airflow requirements of the space.
What filtration and refrigerant does the Quest 225 use?
The Quest 225 uses a MERV-13 air filter measuring 18 by 18 by 2 inches to capture dust, pollen, mold, bacteria, and some viruses. Its refrigeration system uses 3 pounds 4 ounces of lower-GWP R454B refrigerant.
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 225 Specifications

@ 80° F/60% RH
Water Removal 225 Pints/Day
Efficiency 7.6 Pints/kWh
Energy Factor 3.6 Liters/kWh
Current Draw 6.1A at 208V / 5.5A at 230V
Power 1,230 Watts
Total Heat Output 14,400 BTU
Heat of Condensation 10,200 BTU
Motor Load 4,200 BTU
@ 75° F/50% RH
Water Removal 130 Pints/Day
Efficiency 4.7 Pints/kWh
Energy Factor 2.2 Liters/kWh
Current Draw 5.5A at 208V / 5.0A at 230V
Additional Specifications Quest 225
Part Number 4046100
Dehumidifier Type Refrigerant Dehumidifier
Airflow 630 CFM at 0.0" WG
Operating Temperature 56°-95° F
Supply Voltage 208-230V, 1 Phase, 60 Hz
Unit Dimensions 26.8" L x 23.6" W x 20.9" H
Unit Weight 130 lb
Control Type Onboard Digital Controls with Low-Voltage Terminal Block
Air Filter MERV Rating MERV 13
Air Filter Dimensions 18" x 18" x 2"
Recommended Breaker Size 15 Amps
Power Cord / Plug 14/3 SJTW, 6' Cord / NEMA 6-15P
Refrigerant Type R454B
Refrigerant Amount 3 lb 4 oz
Drain Port Connection 3/4" Threaded NPT
Fan Type Single-Speed Impeller
Ducted Energy Factor 6.3 Pints/kWh at 73° F/60% RH
Warranty 5 Year Limited

Items in the box

Quest 225 Dehumidifier Unit

NEMA 6-15P Power Cord

3/4" NPT Drain Connection

Digital Onboard Controls

MERV-13 Air Filtration

Warranty Policy

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