Quest 506
High Capacity Series
Model #4036600

This product has been discontinued.
We’ve redesigned the Quest 506 utilizing a more environmentally-conscious refrigerant. Find the new and improved models here:
@ 80 F | 60% RH
- Capacity 506 Pints/Day
- Efficiency 8.1 Pints/kWh
- Supply Voltage 220-240V
- Current Draw 11 Amps

Overview
Powerful and efficient, the Quest 506 is the industry’s first 500-pint dehumidifier and is perfect for agricultural applications as well as tough commercial spaces. Its 506 pint capacity makes it one of the most powerful commercial dehumidifiers on the market.
M-CoRR Technology
The Quest 506 utilizes our unique patented M-CoRR technology. This multi-coil refrigeration design recycles excess heat to provide the highest efficiencies available on the market, while reducing heat (BTUs) output into your space.
Commonly used in indoor growing facilities, greenhouses, warehouses and other large industrial areas, the 506 dehumidifier is available for a variety of uses and installations. This Quest dehumidifier can be hung or placed on the floor, and offers an impressive MERV 13 filtration system.
The Quest 506 dehumidifier is engineered and assembled in Madison, Wisconsin. It’s backed by a 5-year warranty. In addition, this unit meets California Title 24 requirements for both ducted (whole-home) and non-ducted (portable) installations.
Also available in 277V: View Quest 506 277V
Key Features

HIGH EFFICIENCY PERFORMANCE
No dehumidifier is more efficient

PATENTED MULTI-COIL TECHNOLOGY
This Multi-Coil Refrigeration Recovery technology achieves the highest efficiencies available in the market

INDUSTRY’S LOWEST AMP DRAW
More efficient units have less heat output and free up electricity for other equipment
Features
WIDEST OPERATING RANGE
Of temperature and relative humidity
UL RATED AND ETL LISTED
The highest safety standard
INTEGRATED HANDLES & HANGING POINTS
For easier movement and installation
LONG POWER CORD
For extended reach
MERV 13 FILTRATION
Superior filtration removes more harmful contaminants from the air such as dust, pollen and mold as well as bacteria and some viruses
OVERHEAD OR GROUND PLACEMENT
Built to fit what works for your space
Specifications
@ 80 F | 60% RH
Water Removal
506 Pints/Day
Efficiency
8.1 Pints/kWh
Energy Factor
3.8 L/kWh
Current Draw
11 Amps
Power
2,700 Watts
BTU (Total)
31,000
BTU (Heat of Condensation)
22,500
BTU (Motor Load)
8,500
@ 75 F | 50% RH
Water Removal
349 Pints/Day
Efficiency
6.2 Pints/kWh
Energy Factor
2.9 Liters/kWh
Current Draw
10.2 Amps
California title 24 compliant
Non-Ducted Energy Factor
6.5 Pints/kWh @ 65 F | 60% RH
Ducted Energy Factor
7.5 Pints/kWh @ 73 F | 60% RH
Part Number
4036600
Dehumidifier Type
Refrigerant Dehumidifier
CFM
1,500
Operating Temperature
56 F Min–95 F Max
Supply Voltage
220–240 VAC, 1 Phase, 60 Hz
Unit Dimensions
28.9″ W x 34.1″ H x 44.8″ L
Unit Weight
280 lb
Control Type
Requires external control
Air Filter MERV Rating
MERV 13
Air Filter Dimensions
18″ x 20″ x 2″
Power Cord
12ga NEMA 6-20P (10′)
Refrigerant Type
R410A
Refrigerant Amount
4 lb 8 oz
Drain Port Connection
3/4″ Threaded NPT
Warranty
5 Year

Downloads
Sizing & Selection

How to properly size your dehumidification equipment (VIDEO)
Getting at how much humidity control you need isn’t the international man of environmental control mystery, like many of us think. In fact, how to properly size your dehumidifiers is relatively straightforward IF you have the necessary data.
Read More →
Grow room dehumidifiers: Perfect your setup
When the team at East Coast Cultivation set out to build its new indoor grow operation in Rhode Island, it knew it had to nail one thing: environmental controls.
Read More →
Vapor Pressure Deficit and Why it Matters
The gardening world is filled with trends and phrases that come and go as quickly as they’re created. Sometimes these concepts are thrown around without full understanding, especially with the more scientific processes. One of the most misunderstood concepts is vapor pressure deficit, or VPD, as it’s commonly called.
Read More →Need Help Sizing?
Our humidity experts are standing by to assist.
Installation Options

Freestanding unit

Can be mounted overhead with use of 3/8″ Threaded Rod

P-Trap Requirements
QUEST 506 230V: DISCOVER YOUR POTENTIAL SAVINGS.
How much does your energy cost?
How much water do you need to remove?
How much does the competing dehumidifier cost?
Quest 506 230V
Machines/Room
4
Equipment Cost @ MSRP 4 × $7699.95
$ 4800
Vegetation Period (4 Weeks) 80F/60%, Filter 100%
$ 2400
Flower Period (7 Weeks) 75F/55%, Filter 50%
$ 1600
Flower Period (2 Weeks) 70F/50%, Filter 25%
$ 114
Operating Costs Per 3mo Grow Cycle
$ 4114
Yearly Costs
$ 16,457
× 5
Year 1 4 Grow Cycles
$ 16,457
Year 2 4 Grow Cycles
$ 16,457
Year 3 4 Grow Cycles
$ 16,457
Year 4 4 Grow Cycles
$ 16,457
Year 5 4 Grow Cycles
$ 16,457
Total Cost (5 Years) Equipment + Operating Cost
$ 123631
Competitor 710
Additional competitor units may be needed to address total water removal at rated conditions due to ppd de-rated capacity.
Quest: 205 gal/day de-rated capacity.
Competitor: 190 gal/day de-rated capacity.
4
Equipment Cost @ MSRP 5 × $11067.47
$ 4800
$ 3304
$ 3177
$ 240
Operating Costs Per 3mo Grow Cycle
$ 4114
Yearly Costs
$ 16,457
× 5
Year 1 4 Grow Cycles
$ 16,457
Year 2 4 Grow Cycles
$ 16,457
Year 3 4 Grow Cycles
$ 16,457
Year 4 4 Grow Cycles
$ 16,457
Year 5 4 Grow Cycles
$ 16,457
Total Cost (5 Years) Equipment + Operating Cost
$ 180012