Quest 375 Overhead Dehumidifier (50Hz) | 170L/Day | 3.6 L/kWh Efficient | 950 CFM | MERV 13 | 230V | Commercial Grow & Large Dry Rooms

The Quest 375 Overhead Dehumidifier (50Hz) is purpose-built for high-volume moisture removal in large-scale environments where precision and efficiency are non-negotiable. Designed for 50Hz regions, it’s an ideal fit for commercial grows, large drying rooms, and climate-critical industrial applications that demand consistent humidity control at scale.

Powered by Quest’s advanced M-CoRR Technology, the Quest 375 delivers strong performance with impressive efficiency—while helping reduce system heat output. The unit is engineered in a more compact profile (up to 20% smaller than traditional systems), making it easier to integrate overhead without wasting valuable space.

Installation is straightforward thanks to integrated lift and hang points for overhead mounting. Control is handled via a modern digital interface that supports accurate RH setpoints, preventative maintenance alerts, troubleshooting diagnostics, and a dark mode option for light-sensitive environments. For expanded control, an optional external controller can be connected via the low-voltage terminal block.

Engineered and assembled in the USA, the Quest 375 is built for facilities that want high performance, reliable operation, and precise environmental control.

Key Features

• High-capacity moisture removal: up to 170L/day (26.7°C / 60% RH)

• High efficiency: 3.6 L/kWh energy factor (26.7°C / 60% RH)

• M-CoRR Technology for performance + energy savings

• Compact overhead-ready design (reduced size vs traditional systems)

• Integrated lift & hang points for easy overhead installation

• Onboard digital controls with RH setpoints, maintenance alerts + diagnostics

• Dark mode for low-light environments

• MERV 13 filtration for cleaner air handling

• Variable speed EC motor fan for efficient airflow

• Built for 50Hz markets (AU/EU compatible)

Performance Specs

At 26.7°C | 60% RH

• Water removal: 170 L/day

• Efficiency: 7.6 pints/kWh

• Energy factor: 3.6 L/kWh

• Current draw: 9.3 A

• Power: 2,550 W

• Total BTU: 23,100

At 23.9°C | 50% RH

• Water removal: 109.2 L/day (231 pints/day)

• Efficiency: 5.4 pints/kWh

• Energy factor: 2.6 L/kWh

• Current draw: 8.6 A

General Specifications

• Type: Refrigerant dehumidifier

• Airflow: 950 CFM

• Operating temp: 13°C min – 35°C max

• Supply voltage: 230 V

• Dimensions: 83.6 (L) × 60.2 (W) × 62.5 (H) cm

• Weight: 97.51 kg

• Controls: Onboard digital + low voltage terminal block

• Filter: MERV 13 | 50.8 × 55.8 × 5.1 cm

• Recommended breaker: 16A (EU/ZA/AU) | 13A (UK)

• Power cord: 6m FEM IEC 60320-C13

• Refrigerant: R454B | 1,757 g (62 oz)

• Drain port: 1.9cm threaded NPT

• Fan: Variable speed EC motor