The GRANIFRIGOR™ Subtropic grain cooling units are performance- and energy consumption-optimised for the temperature and humidity of the subtropical climate with tropical summers and non-tropical winters.

Fields of application

  • Reliable grain cooling in warm temperate climates (rain, fog, sultry, heat and cold) - secure control of air humidity due to HYGROMAT™ automatic
  • Complete suitability and reliable operation even at very high outside temperatures due to safety refrigerants
  • Standard medium pressure version - ideal also for tower silos
Make grain last

Product overview

Make grain last

GRANIFRIGOR™GC 240 Subtropic

  • Storage size 8.200 t
  • Cools 220-370 tons in 24 hours
  • Up to 8,200 tons in 3 weeks
Grain ventilation and proper grain storage

GRANIFRIGOR™GC 320 Subtropic

  • Storage size 10.000 t
  • Cools 310-520 tons in 24 hours
  • Up to 10,000 tons in 3 weeks
Successfully ventilate and store grain

GRANIFRIGOR™GC 500 Subtropic

  • Storage size 16.000 t
  • Cools 460-750 tons in 24 hours
  • Up to 16,000 tons in 3 weeks
Cool and conserve the grain harvest

GRANIFRIGOR™GC 700 Subtropic

  • Storage size 25.000 t
  • Cools 500-1200 tons in 24 hours
  • Up to 25,000 tons in 3 weeks


Make grain last

GC 240 Subtropic

Grain ventilation and proper grain storage

GC 320 Subtropic

Successfully ventilate and store grain

GC 500 Subtropic

Cool and conserve the grain harvest

GC 700 Subtropic

Storage size upto8.200 t10.000 t16.000 t25.000 t
Cooling performance in 24 hours220 - 370 t/Day310 - 520 t/Day460 - 750 t/Day500-1200 t/Day
Refrigerating capacity compressor82 kW106 kW165 kW132 kW
Volume flow12.500 m 3/h18.000 m 3/h25.000 m 3/h26.000 m 3/h
Pressure maximum6.000 / 8.000 Pa6.000 / 8.000 Pa6.000 Pa6000 Pa
Output (average)30 kW37 kW69 kW75 kW
Max. current consumption100 A125 A210 A291 A
Electrical connection100 A125 A250 A300 A
∅ Connections cold air hose400 mm600 mm600 mm600 mm
Condensation water runoff average35 - 40 l/h45 - 65 l/h65 - 100 l/h100-150 l/h
∅ Condensation water runoff hose3/4 Zoll3/4 Zoll3/4 Zoll3/4 Zoll
With Tyres3.300 x 1.550 x 2.450 mm3.710 x 1.810 x 2.550 mm3.950 x 2.130 x 2.900 mm4400 x 2130 x 2900 mm
With swivelling casters2.950 x 1.550 x 2.250 mm3.370 x 1.810 x 2.410 mm3.740 x 2.130 x 2.690 mm4200 x 2130 x 2690 mm
With Tyres1.650 kg2.000 kg3.000 kg3950 kg
With swivelling casters1.500 kg1.900 kg2.750 kg3700 kg

Product description

Handling and operation

  • Particularly powerful compressors and large heat exchangers for tropical conditions
  • Quiet normal running due to frequency-controlled fans and sound-optimised compressors
  • Different operating modes due to fully automated Siemens S7 controller: very quiet (whisper mode -often has to run at night), rapid cooling (booster mode), ventilation mode (only air) and normal operation
  • Efficient, large-area filters with integrated filter monitoring
  • Increased safety through counter pressure display
  • Optimal control through inspection windows in the air cooler
  • Reliable start even at low outside temperatures due to speed-controlled condenser fans
  • Easy and thorough cleaning due to good accessibility e.g. by heat exchangers with wide fin spacing, housing doors, manholes and inspection openings in the air duct

Energy and environmental balance

  • Economical solution due to low power consumption
  • Energy-efficient design due to frequency controls and the state-of-the-art motors
  • Environment friendly safety refrigerant - without CFCs and without HCFCs
  • Additional energy savings through winter and summer thermostats
  • Permanent compliance and monitoring of desired cooling air humidity and temperature with HYGROTHERM™
  • Sound insulation as standard

Workmanship and quality

  • HYGROTHERM™ heating coil as standard
  • Electrical heating coil as standard
  • Robust construction due to stainless steel condensate tray
  • Corrosion protection through coated heat exchangers
  • Extra safe, standard chassis equipment with puncture-proof solid rubber tyres, optional swivel castors
  • Multi-stage quality control with factory test run
  • Easy maintenance due to large, fully panelled doors
  • Robust industrial version
  • Depending on the version, large TÜV-tested refrigerant collectors and subcoolers
  • CE-compliant versions


  • High pressure blower (HP) for slimline silo cells
  • Protective grille against animals
  • Parking supports
  • Forklift pockets for easy device transport using a forklift
  • Alarm modem (notification by SMS/email) for permanent monitoring
  • Modem for remote diagnosis/remote display (app, LAN, WiFi/WLAN, GSM)
  • Sound-proof cabin for -15 to -20 dB(A)
  • Additional heating for seeds and/or brewer's malt
  • Rotary field monitoring for effective device protection
  • Signalling light for convenient remote device monitoring
  • Fully automatic cool stop function
  • FrigorTec app


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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Our experts will be happy to advise you on the planning and implementation of your projects. Together we will find a perfect customised solution.

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