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Quest 506 Overhead 500 Pint Dehumidifier
Quest 506 Overhead 500 Pint Dehumidifier

Quest 506 Overhead 500 Pint Dehumidifier

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SKU: 4046300

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The Quest 506 Overhead Dehumidifier is a top-tier, industrial-grade moisture control solution, designed for exceptionally large and demanding environments. This formidable unit has the capacity to remove an astounding 506 pints of moisture per day, making it perfectly suited for vast spaces such as large-scale commercial grow operations, extensive warehouse facilities, or major industrial settings. Its overhead installation design is a strategic advantage, allowing for efficient space utilization while ensuring comprehensive and effective dehumidification throughout the area. The Quest 506 is renowned for its energy efficiency, which is a critical feature in reducing operational costs and environmental impact, especially in settings where continuous, high-volume dehumidification is required. Built to withstand the rigors of heavy-duty use, it features robust construction and intuitive controls, making it a durable and user-friendly option. The Quest 506 Overhead Dehumidifier stands out as an ideal choice for those who require a powerful, efficient, and space-saving solution to tackle the challenges of excessive humidity in large-scale environments.
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Quest 506 Overhead 500 Pint Dehumidifier
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Quest 506 Overhead 500 Pint Dehumidifier

Elevate high-capacity humidity control with the redesigned Quest 506 Overhead Dehumidifier. It removes 500 pints daily at an industry-leading 9.2 pints per kilowatt hour and supports 208V, 230V, or 277V electrical systems. Patented M-CoRR™ technology recycles excess heat for greater efficiency and reduced BTU output, while onboard digital controls simplify setpoints, diagnostics, and maintenance alerts. Engineered and assembled in Madison, Wisconsin, its compact design supports overhead or ground placement across demanding agricultural, commercial, industrial, storage, and recreational environments.

Product Overview

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Specifications

What's Included?

Warranty Policy

Product Overview

The newest Quest 506 generation combines 500-pint daily capacity with flexible 208V, 230V, and 277V operation. Its streamlined cabinet fits overhead or at ground level, while onboard digital controls provide precise humidity setpoints, self-diagnostics, filter notifications, dark mode, and optional remote control. MERV 13 filtration, auto restart, and lower-GWP R454B refrigerant support dependable, efficient moisture management in demanding commercial environments.

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

⚠️
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 design to recycle excess heat during moisture removal. This process helps the Quest 506 achieve 9.2 pints per kilowatt hour while reducing heat output into the surrounding space. The result is efficient humidity control, lower electrical demand, and dependable performance across a wide operating range.

Highlighted Features of the Quest 506

Highest Efficiency.
Lower Energy Usage

The redesigned Quest 506 removes 500 pints daily at 9.2 pints per kilowatt hour. Patented M-CoRR™ technology recycles excess heat to deliver exceptional moisture removal with reduced electrical demand.

Industry's Lowest Amp Draw

The Quest 506 draws 10.9 amps at 208V, 9.9 amps at 230V, or only 8.2 amps at 277V. Lower amp consumption frees electrical capacity for other equipment, while efficient M-CoRR™ operation helps reduce the heat released into your controlled environment.

More Capacity,
Smaller Footprint

The streamlined cabinet removes the previous generation's feet to reduce overall height. Integrated handles and hanging points support easier movement, flexible ground placement, or overhead installation.

Quest Dehumidifier 506 - Overhead Series

The redesigned Quest 506 delivers high-capacity dehumidification for 208V, 230V, and 277V electrical systems. It removes 500 pints per day at 9.2 pints/kWh while drawing 10.9 amps at 208V, 9.9 amps at 230V, or 8.2 amps at 277V. Onboard digital controls provide precise setpoints, self-diagnostics, filter notifications, dark mode, and an optional external-control connection. The compact cabinet supports freestanding or overhead installation, while integrated handles, hanging points, MERV 13 filtration, auto restart, and environmentally conscious R454B refrigerant help maintain reliable humidity control in demanding commercial and industrial spaces.

Installation Options For Quest 506

Freestanding

For freestanding installations, elevate the unit to allow space for the drain trap.

Ceiling-Mounted

Dehumidifier 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

Which voltage options are available for the Quest 506?
The Quest 506 is available for 208V, 230V, and 277V electrical systems. Model 4046300 supports flexible 208/230V operation, while model 4046310 is designed specifically for 277V installations.
How much moisture can the Quest 506 remove?
At 80°F and 60% relative humidity, the Quest 506 removes 500 pints per day at 9.2 pints/kWh. At 75°F and 50% relative humidity, it removes 320 pints per day at 6.8 pints/kWh.
Can the Quest 506 be installed overhead?
Yes. The unit can operate as a freestanding system or be mounted overhead using 3/8-inch threaded rods. Integrated handles and hanging points help simplify movement and installation.
What functions are available through the digital controls?
The onboard interface supports precise humidity setpoints, self-diagnostics, filter-change notifications, defrost indication, fan control, dark mode, and terminal control. A low-voltage terminal block also supports an optional external controller.
What refrigerant and filtration system does the Quest 506 use?
The newest Quest 506 uses lower-GWP R454B refrigerant and dual MERV 13 filters. This filtration helps remove dust, pollen, mold, bacteria, and some viruses from the processed air.
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 506 Specifications

@ 80° F/60% RH
Water Removal 500 Pints/Day
Efficiency 9.2 Pints/kWh
Energy Factor 4.4 Liters/kWh
Current Draw 10.9A at 208V / 9.9A at 230V / 8.2A at 277V
Power 2,250 Watts
Total Heat Output 30,500 BTU
Heat of Condensation 22,800 BTU
Motor Load 7,700 BTU
@ 75° F/50% RH
Water Removal 320 Pints/Day
Efficiency 6.8 Pints/kWh
Energy Factor 3.2 Liters/kWh
Current Draw 8.6A at 208/230V / 7.9A at 277V
Additional Specifications Quest 506
Part Number 4046300 – 208/230V / 4046310 – 277V
Dehumidifier Type Refrigerant Dehumidifier
Airflow 1,150 CFM at 0.0" WG
Operating Temperature 56°–95° F
Supply Voltage 208V / 230V / 277V
Electrical Phase Single Phase, 60 Hz
Unit Dimensions 44.8" L x 29.0" W x 27.4" H – 208/230V
277V Unit Dimensions 44.8" L x 28.9" W x 27.4" H
Unit Weight 275 lb
Control Type Onboard Digital Controls with External Control Connection
Air Filter MERV Rating MERV 13
Air Filter Dimensions 18" x 20" x 2"
208/230V Power Cord 12/3 SJTW, 20A, 6' Cord with NEMA 6-20P
277V Power Cord NEMA L7-20P
Refrigerant Type R454B
Refrigerant Amount 3 lb 14 oz
Drain Port Connection 3/4" Threaded NPT
Non-Ducted Energy Factor 6.7 Pints/kWh at 65° F/60% RH
Ducted Energy Factor 7.9 Pints/kWh at 73° F/60% RH
Warranty 5 Year Limited

Items in the box

Quest 506 Dehumidifier Unit

Voltage-Specific Power Cord

3/4" NPT Drain Port

Onboard Digital Controls

Dual MERV 13 Filters

Warranty Policy

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