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Quest Hi - E Dry 140 Pint Portable Dehumidifier - Green Thumb Depot
Quest Hi-E Dry 140 Pint Portable Dehumidifier

Quest Hi-E Dry 140 Pint Portable Dehumidifier

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SKU: 4045100-30

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$3,799.95
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Power through excess humidity with the Quest Hi-E Dry 140—a commercial-grade portable dehumidifier built for grow rooms and processing spaces. It removes up to 135 pints/day while delivering outstanding efficiency (7.2 pints/kWh) via Quest’s M-CoRR™ coil design. Move it anywhere with 12-inch wheels, a dual-position handle, and a 25-ft cord; drain flexibly with the internal pump (up to 20 ft). With a wide 56–95°F operating range, notably low 6.8-amp draw, and a compact 20″×24.5″×18″ footprint, it saves space and energy.

Quest Hi-E Dry 140 Portable Dehumidifier

Quest Hi-E Dry 140 Portable Dehumidifier

Dial in humidity control anywhere on site with the Hi-E Dry 140 Quest’s portable, high-efficiency workhorse for cultivation, processing, and storage spaces. It removes up to 135 pints/day at 80°F/60% RH while delivering exceptional efficiency (7.2 pints/kWh) and a low 6.8 amp draw to free up power for lights and HVAC. Built to move, it features recessed 12″ wheels, a dual position handle, a 25′ power cord, and an internal condensate pump that discharges up to 20′ away. The compact 20″ × 24.5″ × 18″ chassis collapses to nest for tight storage and operates reliably across 56–95°F. Quest’s M CoRR™ coil design helps deliver consistent, energy-smart drying day after day.

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Product Overview

Put excess humidity on a leash with the Quest Hi E Dry 140 Portable Dehumidifier. Engineered for commercial grow rooms and processing spaces, the 140 delivers high capacity moisture removal with a remarkably low amp draw to ease HVAC load and cut operating costs. Its portable, plug and play design lets you position drying power exactly where you need it—helping prevent mold, mildew, and long dry times while supporting consistent VPD targets in greenhouses, vertical farms, and indoor gardens.

Quest Hi-E Dry 140 Portable Dehumidifier Quest Hi-E Dry 140 Portable Dehumidifier

Quest: Portable, High-Efficiency Drying Built for Pros

Quest sets the bar for energy smart dehumidification. The Hi E Dry 140 pairs high capacity with industry leading efficiency to stabilize environments while keeping utility bills in check. Expect durable, commercial grade construction, responsive U.S. based support, and a strong warranty—plus a product line that scales from single rooms to multi zone facilities. If you want reliable performance and low total cost of ownership, Quest delivers.

Energy Efficiency Icon

Energy Efficient (7.2 pints/kWh)

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135 PPD, Compact Footprint

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M CoRR™ Refrigeration Design

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MERV 10 Air Filtration

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Portable, Plug and Play

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U.S. Tech Support

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Strong Warranty

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Patented Performance

QUEST'S PATENTED TECHNOLOGY | M CoRR™

The Hi E Dry 140 achieves outstanding efficiency thanks to Quest’s exclusive M CoRR™ (Multi Coil Refrigeration Recovery) architecture. By intelligently staging and recovering energy within the refrigeration circuit, M CoRR extracts more water per kilowatt hour and lowers heat output to the room—delivering faster, more economical drying and a stronger ROI.

Designed to perform across a wide range of dew points and airflow conditions, M CoRR keeps capacity steady even as environmental variables shift. The result: predictable moisture control, reduced compressor runtime, and meaningful long term energy savings for cultivation and post harvest environments.

Hi-E Dry 140 Spec Sheet (placeholder)
Hi-E Dry 140 Manual (placeholder)

How Does M CoRR™ Work in the Hi E Dry 140?

Quest Hi-E Dry 140 with M-CoRR™

M CoRR™ utilizes a pre evaporator, primary evaporator, and a recovery coil. Air is pre cooled to boost moisture removal, thoroughly dehumidified across the main coil, then energy is recovered and reused within the circuit. This approach increases pints per kWh, lowers room heat added during operation, and maintains performance across varying airflow and dew point conditions—ideal for dynamic grow environments.

Highlighted Features of M CoRR™

Efficiency Icon

Highest Efficiency.
Lowest Energy Use.

Pull more water per kilowatt hour—up to 7.2 pints/kWh—to shrink operating costs without sacrificing capacity.

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Less Heat to the Room

Recovered energy is used efficiently within the system, which helps reduce added heat to your space versus less efficient designs.

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Big Capacity,
Small Footprint

A compact 20″ × 24.5″ × 18″ chassis and 85 lb weight deliver serious performance without eating floor space.

Quest Hi-E Dry 140 – Portable Series

The Hi E Dry 140 removes up to 135 pints/day at 80°F/60% RH while drawing only 6.8 amps (~780 W) and moving 300 CFM of air. It runs across a wide 56–95°F operating range and features a built in condensate pump that discharges up to 20′. Mobility is effortless with 12″ recessed wheels, a dual position handle (compatible as a dolly with F9/F10 air movers), and a 25′ power cord. The compact chassis collapses and nests for storage, and the unit is built with commercial grade components, carrying relevant safety listings. Specs include MERV 10 filtration, R454B refrigerant, and a 110–120 VAC, single phase supply. Dimensions: 20″ L × 24.5″ W × 18″ H. Weight: 85 lb. Part No.: 4045100 30.

Quest Hi-E Dry 140 Portable Dehumidifier Side View

Why Thousands of Growers Choose to Work Exclusively with Greenhouse with plants

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FAQ Section

How do I size a dehumidifier for a grow room? Toggle answer
Plants transpire roughly 97% of the water they receive. Estimate daily removal by totaling irrigation. Example: 30 plants × ½ gal/day = 15 gal/day. At 8 pints/gal, that’s 120 pints/day. Size dehumidification to meet or exceed this load; the Hi-E Dry 140 provides up to 135 PPD at 80°F/60% RH.
Isn’t my air conditioner a dehumidifier? Toggle answer
ACs remove moisture only while cooling and often shut off when lights are off—precisely when RH spikes. Using AC for dehumidification can overcool plants and wastes energy. Dedicated systems like the Quest Hi-E Dry 140 dry efficiently with less heat added to the room and far better control.
What’s a safe humidity range for most grows? Toggle answer
Every cultivar is different, but 45–55% RH is a common target that supports plant health, discourages spore germination, and helps keep pests at bay. Adjust based on stage and VPD goals.
How much can efficient dehumidification save on electricity? Toggle answer
Efficiency matters. With up to 7.2 pints/kWh, Quest units often cut monthly energy spend versus less efficient alternatives. Savings vary by climate, runtime, and layout, but add up significantly over a full cycle.
Can I reuse the collected water? Toggle answer
Quest dehumidifiers produce neutral-pH, low-TDS water. Many growers reuse it after appropriate filtration and sanitation practices tailored to their facility standards.
Is there a warranty for this product? Toggle answer
Please check the Warranty tab on this page for full coverage details and terms.
How long will shipping take? Toggle answer
Please review our shipping policy here for current timelines and methods.
What is the return policy? Toggle answer
Please review our return policy here for eligibility and steps.

Quest Hi-E Dry 140 Specifications

@ 80° F / 60% RH
Water Removal 135 Pints/Day
Efficiency 7.2 Pints/kWh
Current Draw 6.8 Amps
Power 780 Watts
@ 75° F / 50% RH
Water Removal 90 Pints/Day
Additional Specifications — Quest Hi-E Dry 140
CFM 300
Operating Temperature 56°–95° F
Supply Voltage 110–120 VAC, 1 Phase, 60 Hz
Unit Dimensions 20″ L × 24.5″ W × 18″ H
Unit Weight 85 lb
Air Filter MERV Rating MERV 10
Power Cord 14ga NEMA 5-15P (25′)
Refrigerant Type R454B
Part Number 4045100-30

Items in the box

Dehumidifier unit icon

Quest Hi-E Dry 140 Dehumidifier (Unit)

Power cord icon

25′ NEMA 5-15P Power Cord (14ga)

Hose icon

Condensate Drain Hose (for internal pump)

Air filter icon

MERV 10 Air Filter (pre-installed)

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Owner’s Manual & Quick Start Guide

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Warranty Information

Warranty Policy

Please Click Here to view our return and warranty policy

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