The Quest 746 480V is a next-generation high-efficiency commercial dehumidifier designed for large-scale industrial and commercial environments. Featuring patented M-CoRR Technology, this unit delivers industry-leading moisture removal of 730 pints per day at 80°F/60% RH with an exceptional efficiency of 8.3 pints/kWh. Engineered and assembled in Madison, Wisconsin, it uses environmentally responsible R454B refrigerant and offers advanced digital controls for precise humidity management.
Key Features of the Quest 746 480V Dehumidifier
- Patented M-CoRR Technology: Multi-coil design for maximum energy efficiency and reduced operating costs.
- High Capacity: Removes up to 730 pints/day, ideal for large commercial spaces.
- Industry's Lowest Amp Draw: 4.9 Amps at 480V 3-phase, freeing up electrical capacity for other equipment.
- MERV-13 Filtration: Superior air filtration removes dust, pollen, mold, bacteria, and some viruses.
- Onboard Digital Controls: Adjustable RH setpoints, self-diagnostics, filter notifications, and Dark Mode for sensitive environments.
- Wide Operating Range: Effective from 56°F to 95°F with versatile temperature and humidity tolerance.
- Flexible Installation: Freestanding or overhead mounting with integrated handles and hanging points.
- Auto Restart: Resumes previous settings after power outages.
- UL Rated & ETL Listed: Meets the highest safety standards.
- 5-Year Limited Warranty: Engineered for durability and reliability.
Technical Specifications
| Specification | Details |
|---|---|
| Water Removal (80°F, 60% RH) | 730 Pints/Day |
| Efficiency (80°F, 60% RH) | 8.3 Pints/kWh |
| Energy Factor (80°F, 60% RH) | 3.9 Liters/kWh |
| Current Draw (80°F, 60% RH) | 4.9 Amps |
| Power | 3,665 Watts |
| BTU (Total) | 45,700 |
| BTU (Heat of Condensation) | 33,200 |
| BTU (Motor Load) | 12,500 |
| Water Removal (65°F, 60% RH) | 480 Pints/Day |
| Efficiency (65°F, 60% RH) | 6.1 Pints/kWh |
| Energy Factor (65°F, 60% RH) | 2.9 Liters/kWh |
| Current Draw (65°F, 60% RH) | 4.6 Amps |
| Ducted Energy Factor | 7.7 Pints/kWh @ 73°F, 60% RH |
| Part Number | 4046320 |
| Dehumidifier Type | Refrigerant Dehumidifier |
| CFM | 1,650 |
| Operating Temperature | 56°F Min - 95°F Max |
| Supply Voltage | 480V - 3 Phase |
| Unit Dimensions | 44.8″ L x 28.9″ W x 27.4″ H |
| Unit Weight | 300 lb |
| Control Type | Onboard digital control with optional external control connection |
| Air Filter MERV Rating | MERV 13 |
| Air Filter Dimensions | 18″ x 20″ x 2″ |
| Power Cord | Hardwire Only |
| Refrigerant Type | R454B |
| Refrigerant Amount | 6 lb 8 oz |
| Drain Port Connection | 3/4″ Threaded NPT |
| Warranty | 5 Year Limited |
Why Choose the Quest 746 480V Dehumidifier?
The Quest 746 480V stands out as the most efficient 480-volt dehumidifier available, with its compact design fitting into tight spaces like mechanical rooms or overhead installations. It complies with California Title 24 requirements for ducted installations and uses R454B refrigerant with 78% lower global warming potential than previous options. Perfect for large commercial and industrial applications requiring robust, energy-saving humidity control.
Installation Options
The Quest 746 480V offers flexible placement to suit your facility:
- Freestanding: Ground-level placement for easy access.
- Overhead: Mount using 3/8″ threaded rod for space-saving installation.
- P-Trap Requirements: Ensures proper drainage in all setups.
Applications
The Quest 746 480V is ideal for:
- Large commercial facilities
- Industrial environments
- Mechanical rooms and space-limited areas
- Any large-scale humidity control needs