The ventilation dryers of the GRANIVENT™ series are the ideal supplement to GRANIFRIGOR™ grain dryers. They are used to aerate the grain immediately after harvesting. Subsequent cooling with a GRANIFRIGOR™ ensures that the grain is not damaged by insects or fungi.

Fields of application

  • Optimal grain protection against warm or humid air
  • Standard medium pressure version - also ideal for tower silos
Ventilation dryer combined with grain dryers

Product overview

Ventilating grain with a ventilation dryer


  • Storage size 5.000 t
  • Protects against warm or humid air
  • Energy efficient and fully automatic
Ventilating grain with ventilation drying


  • Storage size 7.000 t
  • Protects against warm or humid air
  • Energy efficient and fully automatic


Ventilating grain with a ventilation dryer


Ventilating grain with ventilation drying


Storage size upto5.000 t7.000 t

Product description

Handling and operation

  • Easy commissioning by setting the desired maximum values for air temperature and humidity after connecting the device
  • Quiet operation due to soundproof construction and integrated baffle silencer

Energy and environmental balance

  • Economical solution due to low power consumption
  • Energy-efficient design due to the latest motors

Workmanship and quality

  • Chassis equipped with robust pneumatic tyres for increased puncture protection, optionally swivel castors
  • Multi-stage quality control with factory test run
  • Easy maintenance due to large, fully panelled doors
  • Robust industrial design
  • CE-compliant design


  • Additional sound insulation measures
  • Protective grille against animals
  • Parking supports
  • Forklift pockets for easy device transport using a forklift

Ventilating or cooling grain - what is the difference?

A grain cooling unit removes moisture and heat from the outside air before it is forced into the stored crop. In contrast, a ventilation dryer uses untreated outside air for grain ventilation. This has to fulfil certain prerequisites to be able to ventilate grain and bring it to a stable storage condition. If it is not cool enough, it heats up the grain. If it is too moist, condensation may form in the stored crop. Grain ventilation is thus weather-dependent and can only be carried out when the outside air is cool and dry. Depending on weather conditions, grain can only be ventilated for a few hours a day with a ventilation dryer.

On the other hand, a ventilation dryer has lower energy requirements than a grain cooling unit, which has to use additional energy to treat the air. In the case of modern grain cooling units, this additional consumption is not significant, however.

Despite different operational prerequisites and functionality, grain ventilation and grain cooling are not mutually exclusive. On the contrary: If the operating company ventilates the grain in a first step and then cools it, bottlenecks when it comes to cooling can be avoided and investment costs saved.

Gain ventilation is suitable for removing most of the heat from the grain directly after the harvest and cooling it down to 22°C. Bottlenecks can thus be avoided with ventilation dryers in this initial, critical phase of the cooling process.

After the grain is ventilated, it is cooled to under 15°C with a grain cooling unit and brought to a stable storage condition. Through grain ventilation, the grain cooling unit can be smaller in size, therefore reducing investment costs.


With about 60 years of experience in grain cooling, we have acquired extensive specialist knowledge in all areas. We look forward to bringing this know-how to bear on your grain storage challenges.

Technical and functional merits of a grain cooling unit

How grain coolers work

What you need to keep in mind for setting up grain cooling units

The best cooling strategy for your grain storage method

Protect grain against fungi and pests

How you protect your grain from fungi and pests

Grain cooling units are economical

Economical introduction and operation of grain cooling

Installing, configuring, and operating a grain cooling unit

Commissioning and maintenance of grain cooling devices

Successful cooling strategy for grain, whole grain rice, and white rice

Combining grain coolers for a flexible solution

For conserving grain independent of the weather

Safe storage conditions no matter the weather


  • Fully automatic Siemens S7 controller
  • Remote-controlled operation via FrigorTec app
  • Low power consumption
  • Large area filter
  • Pressure-stable cooling air high pressure fans
  • Rigid, welded frame construction
  • Multi-coated steel parts
  • Partially soundproofed housing UV-resistant external cable
  • Eyelets for lashing on every housing corner
  • Compressor from renowned manufacturer, e.g. Bitzer
  • Many options available
  • Factory test run before delivery
  • Made in Germany

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