Quest 335 High-Efficiency Overhead Dehumidifier with M-CoRR Technology

 – 345 Pints/Day, 277V, MERV-13 Filtration

The Quest 335 High-Efficiency Overhead Dehumidifier (277V) is purpose-built for large commercial and industrial facilities that require powerful humidity control on 277V electrical systems. Capable of removing up to 345 pints of moisture per day, this unit delivers industry-leading efficiency while minimizing heat output and energy consumption. Powered by patented M-CoRR™ Technology and equipped with advanced MERV-13 filtration, the Quest 335 ensures stable humidity levels, cleaner air, and reliable performance in the most demanding environments. Its plug-and-play design, digital controls, and durable construction make integration simple and long-term operation dependable.

Key Features & Benefits

• 345 Pints/Day High-Capacity Moisture Removal – Designed for large-scale grow operations, industrial facilities, and high-moisture environments.

• Patented M-CoRR™ Technology – Recycles excess heat through a multi-coil refrigeration system to deliver exceptional efficiency with reduced HVAC load.

• Optimized for 277V Power Systems – Ideal for commercial and industrial buildings utilizing standard 277V outlets with a low amp draw.

• MERV-13 Air Filtration with Filter Compensation – Captures dust, mold spores, allergens, and bacteria while maintaining consistent airflow as filters load.

• Plug-and-Play Operation – Long power cord, integrated handles, and auto-restart functionality simplify installation and operation.

• Advanced Digital Controls – Onboard interface with optional external control compatibility for seamless system integration.

• Built for Demanding Environments – Heavy-duty construction, ETL/UL/CSA certifications, and a 5-year warranty ensure long-term reliability.

• Made in the USA – Engineered and assembled in Madison, Wisconsin for consistent quality and performance.

Technical Specifications

• Capacity (80°F / 60% RH): 345 Pints/Day

• Efficiency: 8.0 Pints/kWh

• Energy Factor: 3.8 L/kWh

• Power: 1,700 W

• Voltage: 277 V

• Current Draw: 6.3 Amps

• Airflow: 900 CFM

• Total BTU: 21,800

• Operating Temperature: 56–95°F

• Air Filter: MERV-13 (20 in x 22 in x 2 in)

• Refrigerant: R454B (58 oz)

• Drain Connection: 3/4 in Threaded NPT

• Power Cord: NEMA L7-15P

• Certifications: ETL / UL / CSA

• Dimensions: 32.9 in L × 24.6 in W × 23.7 in H

• Weight: 215 lbs

Performance Overview

The Quest 335 277V is engineered for continuous-duty applications where moisture control directly impacts productivity, equipment protection, and environmental stability. Its high-efficiency refrigeration system delivers massive moisture removal while keeping heat output low—helping facilities reduce air conditioning demand and operating costs. The integrated MERV-13 filtration system improves indoor air quality without restricting airflow, while filter compensation technology ensures consistent performance even in dusty or debris-heavy conditions.

Ideal Uses & Applications

• Hydroponics, aeroponics, aquaponics

• Greenhouses, nurseries, indoor & vertical farming

• Large commercial grow operations & CEA facilities

• Seed storage and urban agriculture

• Laboratories, research & product development facilities

• Cold storage and water-intensive facilities

• Data centers, server rooms & electronics manufacturing

• Clean rooms, mechanical rooms & industrial warehouses

About the Brand

Quest Climate is a global leader in high-efficiency dehumidification solutions for agricultural, industrial, and commercial applications. Quest products are known for advanced engineering, durability, and long-term energy savings in mission-critical environments.

For facilities that demand maximum capacity, superior efficiency, and seamless 277V integration, the Quest 335 High-Efficiency Overhead Dehumidifier delivers proven performance backed by a 5-year warranty—engineered to protect your operation today and into the future.