Taking innovation to the next level, we’ve improved on the design of the original Quest 506 277V dehumidifier. This newest generation of the 506 surpasses the Quest 335 as the world’s most energy-efficient dehumidifier on the market, removing 500 pints per day at an impressive 9.2 pints per kilowatt hour (at 80°F, 60% RH).

Just like our original 506 design, the 500-pint capacity makes it one of the most powerful commercial dehumidifiers on the market. The 277V voltage provides a low amp draw, freeing up electricity for other equipment on your breaker. Best of all, these units can be installed on 277V without the additional installation of buck-boost transformers or the associated costs of rewiring.

M-CORR™ TECHNOLOGY
The impressive energy efficiency is a result of Quest’s patented M-CoRR™ technology. Our unique multi-coil refrigeration design recycles excess heat to provide the highest efficiencies available on the market, while reducing heat (BTU) output into your space.

ONBOARD DIGITAL CONTROLS
You’ve been asking for it and we delivered: the new generation of Quest 506 now features Quest’s onboard digital controls. This user-friendly control panel allows for easy set points, self-diagnostics, filter change notifications, and dark mode, limiting light pollution. Additionally, the user interface features a low-voltage terminal block to utilize a remote controller, ideal for overhead installations.

STREAMLINED DESIGN
Built on years of real-world feedback and observation, it was clear that most of these high-capacity units were installed overhead and in tight spaces. That insight drove our engineers to rethink the design, eliminating the feet from the previous generation to create a more compact, space-saving solution. The result? The new Quest 506 277V dehumidifier fits seamlessly into your environment with less height, and without compromising performance.

BETTER FOR THE ENVIRONMENT
The Quest 506 now utilizes the environmentally friendly refrigerant R-454B. It boasts a significantly lower Global Warming Potential (GWP) compared to the previously used R-410A, and the common R-32 found in many competitor machines. Switching to R-454B represents a crucial step forward in reducing the environmental impact of the world, and your business. By choosing a dehumidifier with a lower GWP refrigerant, you’re not only improving air quality and moisture control but also contributing to a more sustainable future. Designed to meet stringent environmental standards while maintaining exceptional performance, our upgraded product line delivers the reliability you trust with the added benefit of reduced greenhouse gas emissions.

STRAIGHT FROM MADISON, WISCONSIN
Proudly engineered and assembled in Madison, Wisconsin, the Quest 506 277V is designed to deliver unmatched reliability and efficiency. Accordingly, this unit meets California Title 24 energy requirements for both ducted (whole-home) and non-ducted (portable) installations.

INDUSTRIES

• Agriculture
• Distribution & Logistics
• Energy & Utilities
• Food & Beverage
• Industrial & Manufacturing
• Inside Self-Storage
• Natural Supplements
• Science & Technology
• Sports & Recreation

FEATURES:

• WIDEST OPERATING RANGE Industry’s best performance at the widest temperature and dew point operating conditions
• PATENTED MULTI-COIL TECHNOLOGY Achieves highest efficiencies
  available in the market
• ONBOARD DIGITAL CONTROLS Digital control panel for easy and precise setpoints, with a low-voltage terminal block for use with an optional external controller
• OVERHEAD OR GROUND PLACEMENT Built to fit what works for your space
• WIDEST OPERATING RANGE Of temperature and relative humidity
• UL RATED AND ETL LISTED The highest safety standard
• INTEGRATED HANDLES & HANGING POINTS For easier movement and installation
• LONG POWER CORD For extended reach
• MERV 13 FILTRATION Superior filtration removes more harmful contaminants from the air such as dust, pollen and mold as well as bacteria and some viruses
• ENVIRONMENTALLY-CONCIOUS REFRIGERANT Reducing greenhouse gas emissions, R454B boasts a 78% lower GWP
• INDUSTRY’S LOWEST AMP DRAW More efficient units have less heat output and free up electricity for other equipment

SPECIFICATIONS:
@ 80 F | 60% RH

• Water Removal 500 Pints/Day
• Efficiency 9.2 Pints/kWh
• Energy Factor 4.4 Liters/kWh
• Current Draw 8.2 Amps
• Power 2,250 Watts
• BTU (Total) 30,500
• BTU (Heat of Condensation) 22,800
• BTU (Motor Load) 7,700

@ 75 F | 50% RH

• Water Removal 320 Pints/Day
• Efficiency 6.8 Pints/kWh
• Energy Factor 3.2 Liters/kWh
• Current Draw 7.9 Amps

CALIFORNIA TITLE 24 COMPLIANT
Non-Ducted Energy Factor
6.7 Pints/kWh @ 65 F | 60% RH

Ducted Energy Factor
7.9 Pints/kWh @ 73 F | 60% RH

Part Number 4046310

• Dehumidifier Type Refrigerant Dehumidifier
• CFM 1,150 @ 0.0″ WG
• Operating Temperature 56 F Min–95 F Max
• Supply Voltage 277V
• Unit Dimensions 44.8″ L x 28.9″ W x 27.4″ H
• Unit Weight 275
• Control Type Onboard Digital Controls with Low Voltage Terminal Block
• Air Filter MERV Rating MERV 13
• Air Filter Dimensions 18″ x 20″ x 2″
• Power Cord NEMA L7-20P
• Refrigerant Type R454B
• Refrigerant Amount 3 lb 14 oz
• Drain Port Connection 3/4″ Threaded NPT

Spec Sheet
​Manual​​​