Quest 155 High Efficiency Dehumidifier

Quest 155 High Efficiency Dehumidifier – Compact, Powerful, and Energy Smart

If you're looking for serious dehumidification without taking up a ton of space, the Quest 155 is the perfect fit. This compact, high-efficiency unit removes 155 pints of moisture per day at 80°F and 60% RH—and does it using only a standard 120V outlet. Compared to the previous Quest Dual 155, this one is 20% smaller, making it easier to fit in tight spaces or hang overhead without extra hardware.

The Quest 155 runs on just 6.9 amps and delivers an industry-leading 8.5 pints per kWh thanks to Quest’s patented M-CoRR Technology, which means you'll get top performance while saving big on energy costs.

This unit is packed with features designed to make your life easier: onboard digital controls, auto-restart after power loss, MERV 13 filtration, and a removable access panel for easy service—even when it's hung overhead. It’s California Title 24 compliant and works great whether ducted or not.

Plus, it’s made right here in the USA and backed by a 5-year warranty.

Key Features

• Pulls 155 pints of moisture per day at 80°F / 60% RH
• Super efficient: 8.5 pints/kWh, using only 750 watts
• Runs on a standard 120V outlet (NEMA 5-15P plug)
• Compact footprint, 20% smaller than older models
• Ready for ground or overhead install, no extra hanging kit needed
• Built-in digital controls with RH adjustment (20–80%)
• Automatically restarts with saved settings after a power outage
• High-performance MERV 13 air filter catches dust, pollen, mold, and more
• Uses R454B refrigerant with low environmental impact
• Easy to maintain, thanks to the removable access panel
• Long 9’ power cord for flexible setup
• UL rated and ETL listed for safety
• Built and assembled in Madison, Wisconsin

Specs at a Glance

• Water Removal: 155 pints/day @ 80°F / 60% RH
• Efficiency: 8.5 pints/kWh
• Power Use: 750 watts
• Current Draw: 6.9 amps
• CFM: 500
• Operating Range: 56°F to 95°F
• Unit Size: 26.8" L × 23.6" W × 20.9" H
• Weight: 130 lbs
• Air Filter: MERV 13, 18" x 18" x 2"
• Drain Port: ¾" threaded NPT
• Refrigerant: R454B, 3 lbs
• Power Cord: 9’, NEMA 5-15P
• Warranty: 5-Year Limited

Great For:

• Grow rooms & greenhouses
• Storage facilities & warehouses
• Manufacturing environments
• Supplement & food production areas
• Gyms, pools, and other recreational spaces
• Tech labs and cleanrooms

Shipping Info

This product ships via freight because of its size and weight. After checkout, we’ll contact you with a custom shipping quote. If you want a quote beforehand, just reach out—we’re happy to help.