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

Products at a glance

ProductStorage sizePerformance

GRANIFRIGOR™ GC 240 Subtropic

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

GRANIFRIGOR™ GC 320 Subtropic

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

GRANIFRIGOR™ GC 500 Subtropic

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

GRANIFRIGOR™ GC 700 Subtropic

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25.000 t
  • Cools 700-1200 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 upto 8.200 t 10.000 t 16.000 t 25.000 t
Cooling performance in 24 hours 220 - 370 t/ Day 310 - 520 t/ Day 460 - 750 t/ Day 500-1200 t/ Day
Refrigerating capacity compressor 82 kW 106 kW 165 kW 132 kW
Chilled air fan
Volume flow 12.500 m 3/h 18.000 m 3/h 25.000 m 3/h 26.000 m 3/h
Pressure maximum 6.000 / 8.000 Pa 6.000 / 8.000 Pa 6.000 Pa 6000 Pa
Electrical data
Output (average) 30 kW 37 kW 69 kW 75 kW
Max. current consumption 100 A 125 A 210 A 291 A
Electrical connection 100 A 125 A 250 A 300 A
∅ Connections cold air hose 400 mm 600 mm 600 mm 600 mm
Condensation water runoff average 35 - 40 l/h 45 - 65 l/h 65 - 100 l/h 100-150 l/h
∅ Condensation water runoff hose 3/4 Zoll 3/4 Zoll 3/4 Zoll 3/4 Zoll
Dimensions (L x W x H)
With Tyres 3.300 x 1.550 x 2.450 mm 3.710 x 1.810 x 2.550 mm 3.950 x 2.130 x 2.900 mm 4400 x 2130 x 2900 mm
With swivelling casters 2.950 x 1.550 x 2.250 mm 3.370 x 1.810 x 2.410 mm 3.740 x 2.130 x 2.690 mm 4200 x 2130 x 2690 mm
With Tyres 1.650 kg 2.000 kg 3.000 kg 3950 kg
With swivelling casters 1.500 kg 1.900 kg 2.750 kg 3700 kg
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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.

How grain coolers work

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The best cooling strategy for your grain storage method

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How you protect your grain from fungi and pests

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Economical introduction and operation of grain cooling

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Commissioning and maintenance of grain cooling devices

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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 grain warehouse. Together we will find the perfect customised solution to safeguard your harvest quality.