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Quest 335 industrial dehumidifier with a white metal body and green accents.

Quest 335 277V Industrial Dehumidifier — 345 Pints/Day

Official Quest Dealer Model: 4046210
$5,799.95 USD$5,599.00 USD$5,799.95 USD
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  • Removes up to 345 pints of moisture per day
  • Patented M-CoRR multi-coil design reaches 8.0 pints per kWh
  • Draws only 6.3 amps on a 277V circuit with a NEMA L7-15P plug
  • 5-year comprehensive warranty
  • View More Details
Order today, ships between June 26 - July 10, 2026

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THROUGH THE Cultivator's LENS Hands-On Evaluation

Who This Is For

  • You are sourcing high-voltage units because your 277V facility wiring limits your choice of standard plug equipment.
  • You are prioritizing M-CoRR tech because your cooling system cannot handle the extra heat load from older dehumidifiers.
  • You are installing overhead units because floor space is at a premium and you need clear walkways for crop maintenance.

What We Found

  • The 277V model is what we recommend when you need to keep your limited 120V circuits free for lighting and fans.
  • The MERV 13 filter is a massive step up for keeping the internal coils clean compared to standard MERV 11 setups.

What Users Say

  • Facility managers who switched to 277V say they stopped tripping breakers when all their equipment runs at once.
  • Operators tell us the overhead mounting freed up floor space they desperately needed for more tables and walkways.

Quest 335 277V High Efficiency Dehumidifier | M-CoRR Multi-Coil Refrigeration

The Quest 335 is a high-capacity industrial dehumidifier engineered for commercial facilities using 277V power systems. It utilizes patented M-CoRR technology to maximize water removal while minimizing heat rejection into the grow space. This unit processes 345 pints per day at 80°F and 60% RH with an efficiency rating of 8.2 pints per kWh.

Quest 335 277V High Efficiency Dehumidifier in use
345Pints/DayWater removal capacity
8.2Pints/kWhEnergy efficiency rating
6.3AmpsCurrent draw at 277V
900CFMTotal air throughput

Features

M-CoRR Technology

The multi-coil refrigeration design recycles energy within the unit to reduce heat output. This mechanism allows for higher water removal without significantly increasing room temperature.

MERV-13 Filtration

High-grade filtration captures airborne contaminants including mold spores and bacteria. This ensures the air circulating through your facility remains clean and compliant with industrial standards.

Variable Speed EC Motor

The electronically commutated motor adjusts fan speed to maintain consistent airflow. This reduces overall power consumption while extending the operational lifespan of the internal components.

Industrial Operating Range

The unit functions reliably between 56°F and 95°F. This wide temperature range accommodates various facility cycles from vegetative growth to late-stage flowering.

Compare the Quest Line

Capacity
Efficiency
Voltage
Best For
Quest 100Quest 100
100 Pints/Day
7.5 Pints/kWh
120V
Small-scale grow rooms or supplemental humidity control.
Hi-E Dry 140Hi-E Dry 140
135 Pints/Day
7.2 Pints/kWh
110–120 VAC, 1 Phase, 60 Hz
Portable dehumidification for multi-room facilities.
Quest 155Quest 155
155 Pints/Day
8.5 Pints/kWh
110-120 VAC, 1 Phase, 60 Hz
High-efficiency drying for mid-sized commercial spaces.
Hi-E Dry 195Hi-E Dry 195
195 Pints/Day
5.4 Pints/kWh
115 VAC
Heavy-duty portable use where durability is prioritized.
Next-Gen 225Next-Gen 225
225 Pints/Day
7.6 Pints/kWh
208-230V
Standard commercial facilities requiring moderate throughput.
Quest 335 230VQuest 335 230V
345 Pints/Day
8.2 Pints/kWh
208–230 VAC, 1 Phase, 60 Hz
High-efficiency moisture control for 240V industrial grids.
Quest 335 277VQuest 335 277VYou're viewing
345 Pints/Day
8.2 Pints/kWh
277V
Commercial facilities utilizing 277V power to reduce amperage.
Quest 506 230VQuest 506 230V
500 Pints/Day
9.2 Pints/kWh
208V-230V
Maximum capacity for standard industrial voltage systems.
Quest 506 277VQuest 506 277V
500 Pints/Day
9.2 Pints/kWh
277V
High-capacity humidity control for large 277V facilities.
Quest 746Quest 746
746 Pints/Day
7.3 Pints/kWh
480V
Industrial-scale operations with 3-phase 480V power.

In Detail

Quest 335 277V High Efficiency Dehumidifier in use

The Quest 335 solves the common challenge of excessive heat generation during moisture removal. By utilizing M-CoRR technology, the unit captures and reuses energy that would otherwise be exhausted as heat. This design allows facility managers to maintain tighter temperature control while processing 345 pints of water daily. The 277V configuration is specifically built to lower current draw to 6.3 Amps, freeing up critical electrical capacity for high-intensity lighting systems.

  • Processes 345 pints per day at 80 F and 60% RH.
  • Operates at an industry-leading 8.2 pints per kWh efficiency.
  • Features MERV-13 filtration to eliminate airborne mold and bacteria.
  • Supports overhead or ground placement for flexible facility integration.
  • Includes a digital control interface with external monitoring options.

Technical Specifications

PERFORMANCE
Capacity345 Pints/Day @ 80 F | 60% RH
Efficiency8.2 Pints/kWh @ 80 F | 60% RH
Energy Factor3.8 Liters/kWh
BTU (Total)21,500
CFM900
Operating Temperature56 F Min–95 F Max
ELECTRICAL
Supply Voltage277V
Current Draw6.3 Amps
Power1,700 Watts
HARDWARE
Air Filter MERV RatingMERV 13
Refrigerant TypeR454B
Drain Port Connection3/4″ Threaded NPT
Left vertical dimension6.75
Upper right vertical dimension4 "
Lower right vertical dimension2 "

Warranty

This unit includes a 5-year manufacturer warranty covering defects in materials and workmanship. The coverage ensures long-term reliability for commercial operations. Trimleaf is an authorized Quest retailer; this unit ships with the full manufacturer warranty, valid for the original purchaser.

Frequently Asked Questions

Why should I choose the 277V model over the 230V version?

The 277V model is designed for industrial facilities with higher voltage infrastructure to reduce the amperage draw per unit. This allows you to install more equipment on the same circuit and reduces the overall load on your electrical panels.

How much heat does this unit add to my grow room?

The Quest 335 uses M-CoRR technology to minimize heat rejection by recycling energy within the refrigeration coils. While all dehumidifiers generate some heat, this unit is significantly cooler than traditional single-coil models of the same capacity.

Can I mount this dehumidifier to the ceiling?

Yes, this unit supports overhead placement to save floor space in crowded facilities. Please note that while it is designed for hanging, the 3/8 inch threaded rods required for mounting are not included and must be sourced separately.

How often do the MERV-13 filters need to be replaced?

Filter lifespan depends on the dust and particulate levels in your facility, but standard commercial environments typically require a change every 3 to 6 months. Using MERV-13 filters is essential for maintaining air quality and protecting the internal coils from mold buildup.

Does the unit restart automatically after a power outage?

The Quest 335 features an auto-restart function that restores your previous settings immediately when power returns. This prevents humidity spikes in the event of a temporary facility power failure.

Can I connect this to an external environmental controller?

Yes, the unit includes a digital control interface with an external control option. You can use the low-voltage terminal block to integrate the dehumidifier with most major commercial grow room controllers.

Happy To Help

Questions About This Product?

Our specialists are happy to help. Call us or send a message and we'll get back to you within one business day (most of the time within a few hours.)

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Why Trimleaf

Equipping home growers, craft producers, and commercial operations across North America since 2016.

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