Quest 506 High-Capacity Dehumidifier – QU7571

Quest 506 High-Capacity Dehumidifier - 208/230V - R454B - QU7571

Quest

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Model

QU7571

199396

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Product Features

High-capacity dehumidifier for large commercial spaces
208/230V operation for flexible industrial use
Uses R454B refrigerant for efficient performance
Helps control humidity and prevent moisture damage

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Description

The Quest 506 High-Capacity Dehumidifier – 208/230V (SKU: QU7571 / Model 4046300) is a commercial-grade, ultra-efficient moisture control system designed for large residential, industrial, and controlled-environment applications. It delivers extremely high dehumidification performance while maintaining industry-leading energy efficiency.

With a capacity of up to 500 pints per day under standard conditions, the Quest 506 is engineered for demanding environments such as warehouses, indoor agriculture, restoration projects, and other large spaces requiring continuous and precise humidity control. It uses advanced multi-coil refrigeration technology and R454B refrigerant to maximize efficiency and reduce heat output into the conditioned space.

This 208/230V model is designed for flexible installation and supports both overhead and ground placement. It features integrated digital controls, high airflow capability, and duct-ready configurations for integration into larger air management systems.

Product Features:

500 Pints Per Day Capacity: Extremely high-output dehumidification for large-scale environments.
208/230V Operation: Flexible voltage compatibility for commercial and industrial installations.
R454B Refrigerant System: Modern refrigerant designed for efficient and environmentally improved performance.
M-CoRR Multi-Coil Technology: Enhances energy efficiency while reducing heat output.
High Airflow Design: Supports effective humidity control in large open spaces.
Continuous Duty Operation: Built for 24/7 performance in demanding conditions.
Digital Control System: Allows precise humidity setpoints and system monitoring.

Warranty

The Quest 506 (4046300) typically includes a 5-year limited manufacturer warranty, depending on distributor and installation conditions. Refer to official Quest documentation or an authorized dealer for complete warranty details.

Product Specifications

More Information
Quest 506 High-Capacity Dehumidifier – QU7571
Feature	Spec
SKU	QU7571
Weight (in lbs)	280.000000
Brand/Manufacturer	Quest
Additional Information	Auto-Restart
Additional Information	Number of Fan Speeds: 1
Additional Information	Energy Factor: 3.8 L/kWh
Additional Information	Certifications: ETL, UL
Heating BTU	22,800
Maximum CFM	1150 CFM
Refrigerant	R454B
Capacity	500 pints
Wattage	2700 W
Max Breaker Size	11 Amps
Height	33.8"
Width	28.9"
Depth	44.7"
Pint Capacity	200+
Usage	Ducted, Gyms/Fitness Centers, Indoor Growing/Greenhouses, Kennels/Stables, Barn/Shed, Warehouses
Additional Info	Cabinet Width: 29"
Warranty	5-Year Compressor and Refrigerant System Warranty \| 1-Year Parts and Labor Warranty
Resources	Catalog Specifications Sheet Owner's Manual You will need Adobe® Acrobat® Reader to view PDF documents.
Safety Information	PROPOSITION 65 WARNING This product and many products on our site may contain a chemical know to the state of California to cause cancer or birth defects or other reproductive harm. For more information about Proposition 65 please Click Here.

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Questions and Answers

Customer Questions

Who Makes Quest?

Quest dehumidifiers are proudly manufactured in the United States, specifically in Madison, Wisconsin. This is the home base of Therma-Stor LLC, the company behind the Quest brand. Therma-Stor has built a strong reputation in the HVAC and indoor air quality industries for producing high-performance, durable, and energy-efficient dehumidification systems.

Is installation difficult or do I need a professional?

While many Quest units are plug-and-play, larger models or those requiring overhead mounting may need a professional HVAC technician for safe and proper installation.

How do I know which Quest dehumidifier model is right for my space?

Start by measuring the square footage and ceiling height of your space. Then, consider moisture levels and how often the area is in use. Quest offers models with capacities ranging from around 70 to over 500 pints per day, so there’s an option for everything from small grow rooms to large industrial spaces.

What kind of maintenance is required?

Routine maintenance includes checking and replacing filters regularly, inspecting drainage lines, and cleaning the coils periodically. Most users find the upkeep simple and manageable.

How often do I need to clean or change the filter?

Most customers check the filter every 1–3 months. Depending on dust levels and usage, you may need to clean or replace it quarterly.

What is the warranty on Quest dehumidifiers?

Quest dehumidifiers come with a 5-year warranty on parts and refrigerant system components, offering long-term reliability and peace of mind.

How noisy are Quest dehumidifiers?

Noise levels vary by model, but most units are quiet enough for use in occupied commercial spaces. For grow rooms and workspaces, the sound is often comparable to a running HVAC system.

Can I run the dehumidifier continuously?

Yes, most Quest dehumidifiers are built for continuous operation. They include features like automatic defrost and humidity set points to maintain consistent performance without constant supervision.

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