Calorex DD 3500 Dehumidifier

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This dehumidifier offers additional features to those in the DD 1300 to DD 3300 range and with a higher capacity rotor and increased reactivation power. This is suitable for both commercial and industrial applications where drying capacity is particularly important.

The DD3500 dehumidifier is designed to be used in both standard and close control scenarios, making it a versatile option for different applications. It has optional features which is suitable for specific requirements including energy saving, high dehumidification demand and control requirements. The insulated stainless steel construction also allows it to be used where hygiene is an important requirement and where precooling or lower process temperatures are required.

This range can be used for drying air up to 100% relative humidity with temperatures from -30°C to +40°C. Suitable applications include: close humidity control in laboratories, research facilities and universities, production processes, condensation control, equipment preservation, climate control in storage areas, food, beverage and confectionery production, cold storage, drying processes, and climate control in buildings and specialised production areas.



  • Controlled environment agriculture (CEA) facilities
  • Commercial grow operations
  • Vertical farming
  • Greenhouses and nurseries
  • Indoor farming
  • Seed warehouses and storage
  • Drying rooms
  • Urban farming



  • Insulated stainless steel casing
  • Modulating heating control for external 0 to 10V signal
  • Construction suitable for commercial and industrial applications
  • Compact design
  • Three phase electrical supply
  • EC process and reactivation fans
  • Easy access for servicing and maintenance
  • Standard duct connections
  • Electrical/Gas or Steam reactivation heaters available – the electrical reactivation heater has a PTC-type (Positive Temperature Control) heater, which cannot be overheated
  • PLC controller with touch screen, rotation guard, run time meter and service alarm


  • Remote humidistat/humidity sensor
  • EC fan speed control
  • Communication with building management system via Modbus, Canbus or via web server
  • Wet air heat exchanger
  • Continuous process fan operation
  • Filter guard



Water removal per day (L) 460.8 @ 20°C/60% rh
Power 28700 W
Air flow 3500 m3/hr
Weight 210 kg
Dimensions (H x W x D) 1170 x 807 x 1199 mm
Sound 71 dB(A)



Real Industry Expertise

Don't be surprised to see the odd PhD knocking around our office. When you work with Vertikit you are choosing actual leaders of the field. We've got years of research experience and practical project knowledge to share.

Our Unique Approach

With our level of experience comes the ability to be really creative when it comes to product choices. Our curated product catalogue comes from the world's best suppliers of the specific technologies you need to succeed, regardless of whether they are farm-specific.


Why Choose Vertikit?

Why Choose Vertikit?

Prepared for anything. Our collective history of working with both growers and industry means that whatever the size or complexity of your operation we'll have you growing in no time.

No bias and no bull. You'll always get a straight answer from our team on your best options, regardless of manufacturer.

Vertikit source from many industries, we love to mix and match the best tech from a wide range of innovators from around the globe (yes, globe - we're scientists remember).