Quest 335 277V Industrial Dehumidifier

Quest 335 277V Industrial Dehumidifier — 345 Pints/Day

Need commercial-grade humidity control that integrates seamlessly with your existing 277V electrical infrastructure?

The Quest 335 277V dehumidifier delivers exceptional moisture removal performance specifically designed for commercial and industrial facilities with 277V power systems.

Perfect for commercial facilities, controlled agriculture operations, and industrial applications where 277V outlets are already installed for lighting and equipment systems.

This high-efficiency unit removes up to 345 pints of moisture per day while achieving an impressive 8.0 pints per kWh efficiency rating. The patented M-CoRR™ multi-coil technology recycles excess heat during dehumidification, providing market-leading efficiency while reducing heat output into your space.

Engineered for reliable continuous operation, the Quest 335 operates effectively across temperatures from 56°F to 95°F with integrated MERV 13 filtration that captures mold spores, dust, allergens, bacteria, and virus carriers. This advanced filtration is 20% more effective than MERV-11 and 65% more effective than MERV-8 filters.

Built with commercial-grade components and assembled in Madison, Wisconsin, this plug-and-play unit features onboard digital controls with external control options and variable speed EC motor fans. The 277V configuration draws only 6.3 amps, freeing up valuable electrical capacity for other critical equipment in your facility.

Not on 277-volt power? View the Quest 506 208/230V

Product Highlights

345 pints per day water removal capacity at 80°F/60% RH conditions
8.0 pints/kWh industry-leading energy efficiency with M-CoRR™ technology
277V operation with only 6.3 amp draw for electrical optimization
MERV 13 filtration removes harmful particulates including bacteria and virus carriers
Plug-and-play design with onboard digital controls and 6-foot power cord

Quest 335 277V Features

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Patented M-CoRR™ Technology

Multi-coil design recycles heat for 8.0 pints/kWh efficiency and reduced BTU output

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277V Plug-and-Play

Direct connection to existing 277V outlets with 6-foot cord and NEMA L7-15P plug

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Digital Control System

Onboard digital controls with dehumidistat and low voltage terminal block options

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MERV 13 Air Filtration

Industry-leading filtration captures mold, bacteria, allergens with 900 CFM airflow

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Flexible Installation

Overhead or ground placement with integrated handles for easy positioning

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Variable Speed EC Motors

Auto-restart function with energy-efficient variable speed fan control

Quest 335 277V Advanced Technology

The Quest 335 277V features the same quality and advanced technology as Quest's original 208/230V units, specifically configured for 277V commercial installations. This voltage configuration is an excellent fit for facilities that traditionally have 277V outlets already installed for lighting systems, providing seamless integration with existing electrical infrastructure.

The patented M-CoRR™ (Multi-Coil Refrigerant Recovery) Technology uses an advanced multi-coil refrigeration design that recycles excess heat to provide the highest efficiencies available on the market. This technology not only maximizes energy efficiency but also reduces heat (BTU) output into your space, minimizing cooling system load.

Quest 335 277V Air Quality Enhancement

The Quest 335 features industry-leading MERV 13 filtration technology that significantly improves indoor air quality. This advanced filtration system is:

20% more effective than MERV-11 filters in capturing harmful particulates
65% more effective than MERV-8 filters for comprehensive air cleaning
Capable of capturing mold spores, dust, allergens, bacteria, and virus carriers
Designed to maintain powerful filtration without restricting airflow performance

This higher filtration capability helps maintain a cleaner, healthier environment for your goods, processes, and staff while ensuring optimal equipment performance.

Quest 335 277V California Title 24 Compliance

The Quest 335 277V dehumidifier meets California Title 24 energy standards for both ducted (whole-home) and non-ducted (portable) installations, ensuring compliance with strict energy efficiency requirements for commercial applications.

Non-Ducted Energy Factor: 6.2 Pints/kWh @ 65°F | 60% RH
Ducted Energy Factor: 7.4 Pints/kWh @ 73°F | 60% RH

Quest 335 277V Specifications

Specification	Value
Water Removal @ 80°F/60% RH	345 Pints/Day
Efficiency @ 80°F/60% RH	8.0 Pints/kWh
Supply Voltage	277V
Current Draw	6.3 Amps
Power Consumption	1,700 Watts
Operating Temperature Range	56°F Min – 95°F Max
Air Flow (CFM)	900
Unit Dimensions	32.9″ L x 24.6″ W x 23.7″ H
Unit Weight	215 lb
Control Type	Onboard digital controls with low voltage terminal block
Air Filter MERV Rating	MERV 13
Air Filter Dimensions	20″ x 22″ x 2″
Power Cord	NEMA L7-15P (6′)
Refrigerant Type	R454B
Drain Port Connection	3/4″ Threaded NPT
Fan Type	Variable speed EC Motor
Part Number	4046210

Quest 335 277V Installation Options

The Quest 335 277V offers two primary installation configurations to accommodate your space requirements:

Freestanding Unit

Place the unit directly on the floor with integrated handles for positioning and maintenance access.

Can be Mounted Overhead with Use of 3/8″ Threaded Rod

Mount using 3/8" threaded rod through integrated hanging points to maximize floor space utilization.

P-Trap Requirements

Both configurations require proper P-trap installation for condensate drainage through the 3/4" threaded NPT drain port.

Quest 335 Manuals

Quest 335 Quick Start Guide

Quest 335 Manual

Quest 335 Specification Sheet

Quest 335 277V Warranty

The Quest 335 277V dehumidifier is backed by a comprehensive 5-year warranty, reflecting Quest's confidence in the quality and durability of their Madison, Wisconsin engineered and assembled equipment. This extensive warranty coverage provides peace of mind for commercial applications requiring reliable, continuous operation.

Quest 335 277V FAQs

How does the Quest 335 277V's M-CoRR™ technology reduce facility cooling costs? +

The M-CoRR™ technology recycles excess heat during dehumidification, reducing the unit's heat output into your space. While removing 345 pints per day, it outputs only 21,500 BTUs total with just 5,800 BTUs from motor load. This lower heat output reduces the burden on your cooling system, lowering overall HVAC operating costs while maintaining optimal humidity control.

Why choose 277V over standard 208/230V dehumidifiers for my facility? +

The Quest 335 277V is ideal for commercial facilities that already have 277V outlets installed for lighting systems. The higher voltage operation draws only 6.3 amps compared to higher amperage requirements of lower voltage units with similar capacity. This frees up electrical panel space for other equipment and integrates seamlessly with existing 277V infrastructure commonly found in commercial and industrial facilities.

What makes the Quest 335 277V suitable for plug-and-play installation? +

The Quest 335 277V features onboard digital controls with an integrated dehumidistat, eliminating the need for external control installation in many applications. The unit comes with a 6-foot power cord with NEMA L7-15P plug for direct connection to 277V outlets. It also includes integrated handles for easy positioning and can be placed overhead or on the ground to fit your space requirements.

How effective is the MERV 13 filtration compared to standard filters? +

The Quest 335 277V's MERV 13 filtration is significantly more effective than lower-rated filters:

20% more effective than MERV-11 filters
65% more effective than MERV-8 filters
Captures harmful particulates including mold spores, dust, allergens, bacteria, and virus carriers
Maintains 900 CFM airflow without choking the machine's performance

The 20″ x 22″ x 2″ filters provide comprehensive air cleaning while maintaining optimal dehumidification performance.

What control options are available with the Quest 335 277V? +

The Quest 335 277V offers flexible control options for various applications:

Onboard digital controls with intuitive interface for standalone operation
Integrated dehumidistat for automatic humidity level maintenance
Low voltage terminal block for integration with building management systems
Auto-restart function that returns to previous settings after power outages

This flexibility allows integration with existing facility controls or independent operation as needed.

What are the daily maintenance requirements for the Quest 335 277V? +

The Quest 335 277V requires minimal daily maintenance due to its commercial-grade construction:

Regular MERV 13 filter inspection and replacement (20″ x 22″ x 2″ filters)
Monitoring condensate drainage through the 3/4″ NPT drain port
Periodic cleaning of coils based on environmental conditions
Variable speed EC motors provide energy-efficient operation with reduced wear

The unit's UL rated and ETL listed components ensure reliable operation with minimal intervention required.

What does the 5-year warranty cover for the Quest 335 277V? +

The Quest 335 277V includes a comprehensive 5-year manufacturer warranty covering defects in materials and workmanship. The unit is engineered and assembled in Madison, Wisconsin, providing direct manufacturer support and service. This warranty reflects the commercial-grade construction featuring UL rated and ETL listed safety certifications, ensuring reliable operation in demanding commercial environments.

How does the Quest 335 277V compare to the 208/230V version? +

The Quest 335 277V offers the same quality, features, and M-CoRR™ technology as the 208/230V version but is specifically configured for 277V electrical systems. Both units deliver identical performance (345 pints/day, 8.0 pints/kWh), but the 277V model is optimized for facilities with existing 277V infrastructure, providing seamless integration and efficient electrical utilization in commercial and industrial settings.

Quest 335 277V Industrial Dehumidifier — 345 Pints/Day