Quest 70
High-Efficiency Dehumidifier Series
Model #4033750
@ 80 F | 60% RH
- Capacity 70 Pints/Day
- Efficiency 5 Pints/kWh
- Supply Voltage 110-120V
- Current Draw 5.1 Amps
This unit has been discontinued.
We have discontinued the Quest 70. Please check out the Quest 100 for our most compact option. It’s more energy-efficient!

Overview
Controlling humidity in compact, unconditioned commercial spaces presents unique challenges. Variable temperatures and constrained placement means you need a targeted solution. That’s where the Quest 70 comes in.
This compact, economical, high performing dehumidifier has one of the widest temperature and relative humidity operating ranges we offer.
The Quest 70 dehumidifier is engineered 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.
key features

PLUG-N-PLAY
No installation required

INDUSTRY’S LOWEST AMP DRAW
More efficient units have less heat output and free up electricity for other equipment

ONBOARD DEHUMIDISTAT
Along with a low voltage terminal block
Features
OVERHEAD OR GROUND PLACEMENT
Built to fit what works for your space
HIGH EFFICIENCY
No dehumidifier is more efficient
WIDEST OPERATING RANGE
Of temperature and relative humidity
UL RATED AND ETL LISTED
The highest safety standard
LONG POWER CORD
For extended reach
AUTO RESTART
Unit automatically defaults to prior settings in the event of a power outage
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
COMPACT UNIT
For mobility and a small footprint that won’t interfere with operations
Specifications
@ 80 F / 60% RH
Water Removal
70 Pints/Day
Efficiency
5 Pints/kWh
Energy Factor
2.4 Liters/kWh
Current Draw
5.1 Amps
Power
580 Watts
BTU (Total)
5,000
BTU (Heat of Condensation)
3,000
BTU (Motor Load)
2,000
@ 75 F / 50% RH
Water Removal
43 Pints/Day
Efficiency
3.3 Pints/kWh
Energy Factor
1.6 Liters/kWh
Current Draw
4.9 Amps
California Title 24 Compliant
Non-Ducted Energy Factor
3.9 Pints/kWh @ 65 F | 60% RH
Ducted Energy Factor
4.2 Pints/kWh @ 73 F | 60% RH
Part Number
4033750
Dehumidifier Type
Refrigerant Dehumidifier
CFM
150
Operating Temperature
56 F Min – 100 F Max
Supply Voltage
110–120 VAC, 1 Phase, 60 Hz
Unit Dimensions
12″ W x 12″ H x 21.5″ L
Unit Weight
55 lb
Control Type
Onboard controls with low voltage terminal block
Air Filter MERV Rating
MERV 13
Air Filter Dimensions
9″ x 12″ x 1″
Power Cord
110-120 VAC
Refrigerant Type
R410A
Refrigerant Amount
15 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

Hanging Kit Available

P-Trap Requirements
Quest 70: 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 70
Machines/Room
4
Equipment Cost @ MSRP 4 × $1299.95
$ 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 70
Additional competitor units may be needed to address total water removal at rated conditions due to ppd de-rated capacity.
Quest 70: 34 gal/day de-rated capacity
Competitor 70: 40 gal/day de-rated capacity
4
Equipment Cost @ MSRP 5 × $1636.53
$ 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