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

Product overview

GRANIFRIGOR™GC 240 Subtropic

  • Storage size 8.200 t
  • Cools 220-370 tons in 24 hours
  • Up to 8,200 tons in 3 weeks

GRANIFRIGOR™GC 320 Subtropic

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

GRANIFRIGOR™GC 500 Subtropic

  • Storage size 16.000 t
  • Cools 460-750 tons in 24 hours
  • Up to 16,000 tons in 3 weeks

GRANIFRIGOR™GC 700 Subtropic

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


GC 240 Subtropic

GC 320 Subtropic

GC 500 Subtropic

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 over 55 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.

FrigorTec Tandem Luftanschluss

How grain coolers work


The best cooling strategy for your grain storage method

FrigorTec GRANIFRIGOR™ Raiff Niedersachsen

How you protect your grain from fungi and pests

Economical introduction and operation of grain cooling

Commissioning and maintenance of grain cooling devices

Combining grain coolers for a flexible solution

Safe storage conditions no matter the weather

Advantages with FrigorTec grain cooling units

FrigorTec grain cooling units are based on a sophisticated modular system and offer the following features:

  • Fully automatic Siemens S7 controller
  • Remote-controlled operation via FrigorTec app
  • Rigid, welded frame construction
  • Partially soundproofed housing UV-resistant external cable
  • Eyelets for lashing on every housing corner
  • Pressure-stable cooling air high pressure fans
  • Filters for the cooling air supplied to the grain
  • Compressors, for example from Bitzer/Germany
  • Multi-coated steel parts
  • All FrigorTec grain coolers are "Made in Germany" and complete a factory test run before delivery.

Arrange a consultation appointment

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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