DehuTech 440 Desiccant Dehumidifier | Ducted | Crawl space

The DT440 Desiccant Dehumidifier is a high-performance, stainless-steel moisture-control system designed for demanding commercial and industrial environments. A self-contained unit with fan, filter, rotor and controls, ready for connection to standard size duct works and electrical mains (230V 50 Hz). Whether you need a crawl space dehumidifier, a compact ducted dehumidifier, or a reliable unit for flood restoration, the DT440 delivers outstanding results with a stable, efficient desiccant rotor system. 

✅ Why Choose the DT440 Desiccant Dehumidifier?

High-Efficiency Drying in All Conditions

With a dehumidification capacity of 1.4 kg/h at +20°C and 60% RH, the DT440 excels in environments with low ambient temperatures—ideal for crawl spaces, subfloors, basements, plant rooms and enclosed commercial areas.

PTC Reactivation Heater for Safety & Performance

Equipped with an advanced PTC (Positive Temperature Coefficient) reactivation heater, the unit provides automatic thermal regulation—eliminating overheating risk and ensuring stable, efficient rotor regeneration.

Installation Options – Flexible for Every Space

The DT440 Desiccant Dehumidifier offers versatile installation options, making it suitable for a wide range of commercial and industrial applications:

• Indoor & Basement Installation: Designed for permanent indoor use, the DT440 can be installed in the room to be dehumidified or in a separate room. Duct connections are compatible with standard spiral ducts, with dampers enabling precise airflow control. For basement installations, the unit can be set up to create a slight negative pressure, preventing odours from spreading while maintaining optimal drying performance.
• Ducted & Crawl Space Applications: The DT440 connects easily to standard ductwork for distributing dry air throughout the space, making it ideal as a ducted dehumidifier or crawl space dehumidifier. Wet air is efficiently exhausted outside the building to prevent condensation.