Choosing the Right Dehumidifier: Refrigerant vs Desiccant Systems

When it comes to humidity control in commercial and industrial environments, choosing the right dehumidifier system is essential. At Humiscope, we analyse each client’s needs — from temperature and humidity to moisture removal rates — to design the most effective drying solution for your space.

Why Temperature and Humidity Matter

Temperature and humidity are closely linked, and both directly impact dehumidifier performance. The required room temperature often determines whether a refrigerant or desiccant dehumidifier is the most efficient choice. Selecting the right system ensures optimal performance, energy efficiency, and consistent air quality.

The Two Main Types of Commercial Dehumidifiers

 
Refrigerant Dehumidifier

1. Refrigerant (Mechanical) Dehumidifiers

Refrigerant dehumidifiers work by cooling humid air below its dew point, allowing moisture to condense and drain away. The air is then reheated and returned to the space, creating a drier environment.


 

Best for:

  • Warm, humid conditions (above 20°C)

  • Relative humidity above 40% RH

  • Applications such as indoor pools, process areas, and general commercial use

Refrigerant systems are energy-efficient in warm environments but can ice up in cooler conditions, reducing their effectiveness.

View Humiscope’s range of Refrigerant Dehumidifiers
 

2. Desiccant (Adsorption) Dehumidifiers

Desiccant dehumidifiers use a rotating desiccant wheel — typically containing silica gel — to adsorb moisture from the air. Heated regeneration air then removes the collected moisture and expels it outside, allowing continuous operation even in cold or dry environments.

 

Best for:

  • Cool or low-humidity environments

  • Cold storage, pharmaceutical, and food processing applications

  • Industrial drying processes

This process naturally generates heat - around 680 watts per kilogram of moisture removed - which may require pre- or post-cooling to maintain temperature balance.

View Humiscope’s range of Desiccant Dehumidifiers
 

Understanding the Science of Humidity Extraction

Both dehumidifier types remove moisture by converting water vapour into liquid, a process that releases heat. Effective thermal management is crucial for maintaining stable conditions and maximising efficiency.

At Humiscope, our engineers assess both heat load and moisture removal requirements to deliver precision humidity control across all temperature ranges.

Feature Refrigerant Dehumidifier Desiccant Dehumidifier
Best for Warm, humid environments Cool, low-humidity environments
Operating Temperature Range > 20°C -20°C to +40°C
Humidity Range > 40% RH < 40% RH
Heat Output Moderate High
Energy Efficiency Higher at warm temps Higher at low temps
Applications Indoor pools, general use Cold storage, pharmaceuticals
 

The Humiscope Approach to Humidity Control

Selecting the right dehumidifier isn’t just about picking a product, it’s about engineering a complete humidity control system.

Our experts consider your temperature, humidity, and energy efficiency needs to deliver reliable, long-term performance.

When in doubt, consult a specialist in industrial and commercial dehumidification systems. At Humiscope, we provide detailed heat gain calculations and system recommendations to ensure you achieve your target environmental conditions.

Speak With a Humidity Control Specialist

Looking for the right dehumidifier solution for your facility?
Contact Humiscope to discuss your specific drying, dehumidification, and climate control requirements.

Contact Humiscope