HOF Enterprise Group

Specialists as sought-after partners for industry

The HOF group of companies, with the companies HOF Sonderanlagenbau GmbH and HOF Prüfsysteme GmbH, has been in the possession of the central Hessian entrepreneur Hans-Georg Hof for several decades. Both companies are specialists in their branch, with their high level of know-how and many new innovative ideas laid the foundation for the high technological competence of the group.

Welcome to HOF

HOF Sonderanlagenbau GmbH has been the leading specialist for manufacturing
individual freeze drying systems, loading and unloading systems
and freezing and thawing equipment for over 30 years.

Focus on your product

Individually designed, planned and manufactured – with state-of-the-art technology

We let knowledge grow

Our know-how is the basis for your success

Communication & media

Knowing what is important

Contact

Headquarters:

HOF Sonderanlagenbau GmbH
Ludwig-Rinn-Str. 1-3
35102 Lohra
Germany

Phone + 49 6462 9169-0
Fax + 49 6462 9169-199

info(at)hof-sonderanlagen.de

Mornshausen site:

HOF Sonderanlagenbau GmbH
Vor dem Langen Loh 2
35075 Gladenbach-Mornshausen
Germany

Phone + 49 6462 9169-0
Telefax + 49 6462 9169-199

info(at)hof-sonderanlagen.de

News

HOF Pharma Blast Freezer: For better processes – and better products

You’re familiar with the challenges: freezing or thawing temperature-sensitive products safely and quickly – while meeting steadily increasing demands for quality, efficiency, and flexibility.

Many solutions are already in use – but not all offer the combination of flexibility, safety, and quality that modern processes require.With the HOF Pharma Blast Freezer, we offer a technically advanced alternative that delivers more: greater precision, greater versatility – and better results.

Wide temperature range from +40 °C to –110 °C

Thanks to its broad control range, the HOF Pharma Blast Freezer is ideal for both controlled thawing and shock freezing of sensitive products. The temperature control is precise – ensuring consistently high product quality.
 

Flexible application – for product volumes up to 300 liters

Whether bottles, bags, or containers: the HOF Pharma Blast Freezer processes a wide range of packaging units – with volumes of up to 300 liters.
Thanks to this capacity, the system integrates seamlessly into existing production environments – offering a high level of investment security, scalability, and flexibility.
 

Hygienic, compact, and easy to integrate – also available as sterile version

Made of high-grade stainless steel, the system meets all hygienic requirements of the pharmaceutical industry. Its compact design allows for space-saving integration – both in non-classified areas and sterile environments.
 

Sustainable & future-proof with air as refrigerant

The HOF Pharma Blast Freezer uses natural air (R729) as refrigerant. It complies with the F-Gas regulation, is climate-neutral, and requires no additional safety measures – ideal for sustainable production strategies.
 

Proven solution – ready for testing

The system is already in practical use and has been successfully implemented in customer projects.
It is also available for joint test runs – see its performance for yourself.
 

Service+ included

As with all HOF systems, our project team supports the entire lifecycle: from planning and manufacturing to installation, commissioning, and training. Regular maintenance is also part of our Service+ offering.
 

Real-world testing – see for yourself

The HOF Pharma Blast Freezer has already proven itself in practical operation and is available for joint test runs. This makes it not just an innovative product, but a proven solution with clear investment security.
 

Benefits at a glance

  • Flexible processing of bag & bottle systems
  • Temperature range from +40 °C to –110 °C
  • Compact, hygienic, and easy to operate
  • Also suitable for use in sterile environments
  • Sustainable cooling technology using air (R729)
  • Energy-efficient & F-Gas compliant
  • Comprehensive project support including after-sales service through HOF Service+


"For our customers, it's not just about the technology – but how versatile, safe, and sustainable a solution fits into their processes. That’s exactly what the HOF Pharma Blast Freezer was developed for."

Fabian Plaum (Sales Manager)
 

Want to learn more?

Let us advise you personally and find out how the HOF Pharma Blast Freezer can improve your processes.

Contact our team for more information or to arrange an individual consultation:

Fabian Plaum - fabian.plaum(at)hof-sonderanlagen.de
(Sales Manager)
 

Brochure & more information

For more technical details, visit our section on Freeze-Thaw Units>

Patent Granted – HOF Buffer Tank Technology for Freeze-Drying Systems

Following the successful launch of the HOF CryoBlizzard technology in 2019, we are pleased to announce another milestone:

The innovative HOF Buffer Tank Technology has now been officially patented.

This patent highlights HOF’s technological leadership and confirms the uniqueness of this solution within the field of refrigeration for freeze-drying systems.

The installation of a load storage unit represents the core component of the HOF CCU CryoBlizzard technology. Since 2019, several central refrigeration systems using this sustainable approach have already been successfully implemented – operated exclusively with air as a refrigerant.

The patent confirms HOF’s technological leadership and emphasizes the innovative strength of this energy-efficient and sustainable solution. As an innovative buffer tank technology, it provides our customers with a unique state-of-the-art system that has already been successfully installed multiple times and will greatly reduce operating costs in freeze drying.

The system incorporates air-cycle cooling machines developed by MIRAI Intex, which are an integral part of the technology. In order to supply multiple users via a centralized refrigeration system, the patented load storage unit is used – enabling the reliable, consistent and efficient supply of different temperature levels.

Greater efficiency for ambitious processes

The HOF CryoBlizzard technology stands out not only for its sustainability and long-term viability but also for its significantly improved energy efficiency.
The result: reduced operating costs, lower environmental impact – and maximum performance for demanding production environments.

This innovative, energy-efficient and sustainable technology provides our customers with a truly state-of-the-art solution that significantly reduces the operational costs of freeze-drying.


“The patent not only confirms the technological edge of our solution, but also its sustainable contribution to energy efficiency.”

Fabian Plaum (Sales Management)

HOF has been named "Freeze-Drying System of the Year 2024" in Europe

We are pleased to share some exciting news: HOF has been recognized by Pharma Tech Outlook as the "Freeze-Drying System of the Year 2024" in Europe. This prestigious award is based on a comprehensive reader survey among system users in the biopharmaceutical industry and acknowledges our commitment to innovative technologies, top-tier process safety and forward-thinking solutions.

This accolade our dedication to setting global standards. As a market leader, we stand for an eccellent combination of innovative strength, technological expertise and customized solutions. Our freeze-drying systems are renowned for their precision, efficiency, and sustainable technology, providing our clients with future-ready and dependable solutions.

This recognition is to be assigned to the entire HOF team, who work diligently every day to develop new solutions and drive the company forward. We remain steadfast in our commitment: delivering technological excellence for your applications—today and in the future.

For more details, please refer to the Pharma Tech Outlook article >


“The international recognition confirms that HOF is recognized worldwide as a leader in innovation and quality.”

Stefan Becker (CFO)

Save the Date: HOF TECH-Innovation-Day 2025 – Get Inspired

On November 12, 2025, the HOF TECH Innovation Day will take place in Marburg. By now, we would like to share key details about the planned agenda and inform about the regristration.

Look forward to insightful expert presentations, a compact overview of HOF’s proven refrigeration technologies, an in-depth look at the HOF Pharma Blast Freezer, and case studies on pharmaceutical systems with a focus on Annex 1 of the EU GMP guidelines.

The evening before, we invite you to a relaxed get-together – an opportunity for pleasant conversations in an informal gathering.
On the event day, there will also be time for expert exchange and the option to take part in a guided tour of the HOF facility.

More details here >


"Real innovation happens when technology meets dialogue –
that's what the TECH-Innovation-Day is all about."

Dr. Alexander Hof (CEO)

Would you like to know more?

Ask us a question!