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Geson Pharmaceutical Chiller — Complete Buyer’s Guide

Geson manufactures pharmaceutical chillers for API (Active Pharmaceutical Ingredient) manufacturing, chemical reactor cooling, lyophilisation (freeze drying) support, clean room HVAC, and laboratory temperature control. Pharmaceutical process cooling requires validated, reliable, and precisely controlled chiller systems — Geson pharmaceutical chillers are designed to meet these requirements from standard process cooling at +15°C down to ultra-low temperature cascade systems at −80°C.

All Geson pharmaceutical chillers are factory pressure-tested and run-tested before delivery with full documentation suitable for GMP validation packages. Lead time: 30 working days.

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Pharmaceutical Cooling Applications

Temperature Range Selection Guide

GMP Compliance Considerations

Pharmaceutical manufacturing facilities operating under GMP (Good Manufacturing Practice) regulations have specific requirements for process cooling equipment that go beyond standard industrial chiller specifications:

• Material of construction: Wetted components (evaporator tubes, pump heads, piping, fittings) in contact with process fluid should be SS316L stainless steel for GMP applications. Geson pharmaceutical chillers are available with SS316L evaporator and SS304 secondary circuit components as standard for pharma configurations.
• Documentation package: GMP validation requires a documentation package including Factory Acceptance Test (FAT) records, material certificates for wetted components, calibration certificates for temperature sensors and pressure instruments, and P&ID drawings. Geson provides full IQ/OQ-ready documentation on pharmaceutical chiller orders.
• Temperature control accuracy: Pharmaceutical process chillers require tighter temperature control than standard industrial units — typically ±0.5°C at the process outlet. Geson pharmaceutical chillers use PLC controllers with high-accuracy PT100 temperature sensors to achieve this.
• Cleanability: Pharmaceutical chiller components that may require cleaning should be designed for CIP (Clean-In-Place) or accessible for manual cleaning. Smooth internal surfaces with no dead legs are required in clean areas.
• Refrigerant selection: For pharmaceutical applications, R454B (A2L, GWP 466) and R134A (A1, GWP 1,430) are the most common choices. R454B is now the preferred refrigerant for new equipment under EPA AIM Act regulations. Geson pharmaceutical chillers can be configured with either refrigerant.
• Secondary coolant: Propylene glycol is the only acceptable secondary coolant for pharmaceutical process cooling where any risk of contact with product exists. For purely industrial circuits (HVAC, general utilities), ethylene glycol may be used.

Real Project References — Pharmaceutical Industry

All pharmaceutical chiller projects supplied with factory test records, IQ/OQ-ready documentation, operation manuals, and spare parts list. Remote commissioning support available.

Ultra-Low Temperature Cascade Chiller — −80°C Systems

For applications requiring cooling to −80°C — vaccine and biological sample storage, ultra-low temperature API processing, and lyophiliser support — a cascade refrigeration system is required. A single-stage compressor cannot economically achieve −80°C; cascade systems use two separate refrigeration circuits in series:

• High-temperature stage: Operates between approximately +30°C and −30°C, using a standard refrigerant (R404A, R448A, or similar).
• Low-temperature stage: Operates between approximately −30°C and −80°C, using a low-temperature refrigerant (R23, R508B, or similar).
• The two stages are connected through a cascade heat exchanger — the condenser of the low-temperature stage is cooled by the evaporator of the high-temperature stage.

Geson has supplied −80°C cascade chiller systems to pharmaceutical manufacturers in Asia, including API production facilities requiring precise sub-zero temperature control for synthesis and crystallisation processes.

Contact Geson engineering with your −80°C cooling load and application details for a formal specification and quotation.

How to Specify a Pharmaceutical Chiller

Provide the following information when requesting a pharmaceutical chiller quotation:

1. Application — reactor cooling, crystallisation, lyophilisation, clean room HVAC, or other
2. Process fluid setpoint temperature (°C) and return temperature
3. Cooling load (kW) — if unknown, provide reactor volume and heat of reaction, or lyophiliser model
4. Process fluid type — propylene glycol (food/pharma grade), water, or other
5. GMP documentation requirements — IQ/OQ package, material certificates, FAT
6. Material requirements — SS316L evaporator, SS304 piping, or other
7. Power supply — voltage, frequency, phases (e.g. 3P-400V-50Hz)
8. Ambient conditions — indoor or outdoor installation, maximum ambient temperature

Contact Geson engineering team →
WhatsApp: +86 138 5195 0629 | Email: info@gesonchiller.com

Frequently Asked Questions

What is a pharmaceutical chiller?

A pharmaceutical chiller is a refrigeration system specifically designed for process cooling in pharmaceutical manufacturing — API synthesis, crystallisation, reactor temperature control, lyophilisation, fermentation, and clean room HVAC. Pharmaceutical chillers differ from standard industrial chillers in their tighter temperature control (±0.5°C), GMP-compatible materials (SS316L), documentation packages for validation, and ability to operate at sub-zero temperatures with food-grade propylene glycol secondary coolants.

What temperature can a pharmaceutical chiller achieve?

Geson pharmaceutical chillers cover the full range required for pharmaceutical manufacturing: standard process chillers from +5°C to +25°C; low-temperature chillers from −10°C to +5°C; deep low-temperature chillers from −20°C to −10°C; cascade systems from −45°C to −20°C; and ultra-low temperature cascade systems at −80°C for API manufacturing and biological storage applications.

What secondary coolant should be used in pharmaceutical chillers?

Propylene glycol (food-grade, USP grade) is the required secondary coolant for any pharmaceutical process cooling circuit where contact with product, intermediates, or clean room air is possible. Ethylene glycol must not be used in pharmaceutical process circuits due to its toxicity. For purely utility circuits (general HVAC, cooling towers), ethylene glycol may be acceptable where product contact is impossible.

What GMP documentation does Geson provide?

Geson provides the following documentation for pharmaceutical chiller orders: Factory Acceptance Test (FAT) report with temperature stability data, material certificates for SS316L wetted components, calibration certificates for temperature and pressure instruments, P&ID drawing, electrical schematic, operation and maintenance manual, and spare parts list. This package supports IQ (Installation Qualification) and OQ (Operational Qualification) activities in a GMP environment.

What is a cascade chiller and when is it needed?

A cascade chiller uses two refrigeration circuits in series to achieve temperatures below −40°C that are not economically achievable with a single-stage compressor. The high-temperature stage cools the low-temperature stage condenser, allowing the low-temperature stage to achieve −80°C or below. Cascade systems are required for lyophiliser condenser cooling, ultra-low temperature API processing, and biological sample storage applications.

Does Geson supply chillers for clean room HVAC?

Yes. Geson water cooled and air cooled screw chillers are used as the central chilled water plant for pharmaceutical clean room HVAC systems. Standard chilled water supply temperature is 6°C/12°C. Redundant (N+1) configurations are recommended for GMP clean rooms to ensure continuous operation. BMS integration via Modbus RTU/TCP is standard on all Geson PLC-equipped units.

What is the lead time for a pharmaceutical chiller?

Standard pharmaceutical chiller configurations: 30 working days. Ultra-low temperature cascade systems (−80°C): 45–60 working days depending on complexity. GMP documentation package preparation adds 5–7 working days. Delivery by sea worldwide with wooden case packaging and transportation insurance.

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