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



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

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


Mornshausen site:

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

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



NEW – HOF product brochure

Our new product brochure titled “Technology – knowledge, experience and innovative thinking” contains our complete product range:

  • Freeze drying systems
  • Loading and unloading systems
  • Freeze Thaw Units
  • HOF waterbath & debottling system
  • HOF Customer Service

Among other things, it offers an insight into our role as a technological market leader, combined with topics such as “innovative pioneer” – power of innovation as a brand core, and provides information on our exacting claim “HOF quality is the sum of many success factors”.

The clear structure and design make it easy to find the topics you are interested in.

More >

HOF brand essence = innovative strength

HOF will continue to be among the medium-sized innovation elite in 2022

HOF is the national and international technological market leader in many new developments in the fi eld of freeze drying systems. After all, HOF‘s brand essence is ist innovative strength. To maintain and further expand the associated role of the innovative pioneer: ”is one of our defi ned goals and our customers should benefi t from this. Now and in the future“, says CEO Dr. Alexander Hof. As a professional market leader, it is therefore very important for HOF to have its innovative competence assessed by an independent party.

The Top 100 events, under the scientifi c direction of Prof. Dr. Nikolaus Franke and mentor Ranga Yogeshwar, are the only competition in Germany that has been awarding medium-sized companies for their innovation management under scientific direction for over 25 years on the market.

HOF has continuously faced the associated selection process since 2016 and has been awarded the TOP 100 seal for the seventh time and is, once again, one of the most innovative companies in Germany.

Construction of a new production hall

In the last years it became apparent, due to the continuous growth, that an extension of the production area was necessary. Hans-Georg Hof was responsible for the new building project. He explained: „We had long seen coming the need for the new hall".

 „ Accordingly, preparations - from planning to the building permit application- already started before Corona". „When the pandemic started, we started building – nobody knew where it was leading and we dug a large hole", he said with a laugh.
Implementation started quickly and, despite adverse circumstances in regard to material shortages and delivery delays, the construction of the new production hall was completed in August.

450 square meters of floor space for a production hall : it does not sound especially impressive.
But the height is quite imposing, because the new building has a 4770 cubic meters building volume- it is 11 meters high, extended over three floors, and there is also a four-meter-deep pit. What is the need of these height requirements? "In this way, we can set up the equipment over three floors in an identical design as at the customer’s premises on site " - this saves assembly time and finally offers customers security.

Two cranes - one with 40 and one with 20 tons of lifting capacity - were installed to cater for all needs. And an investment was also made in a cooling tower.

With the new production area, HOF has now successfully increased its capacity for installing freeze dryers in a vertical arrangement as a two-story design by 40% and doubled the capacity of its in-house refrigeration workshop.

The cost of the new building was around €3.35 million - plus investment in infrastructure, making the total project worth €3.8 million. "A good investment in the future," says Alexander Hof.

Pressemeldung HOF "Millionen-Investition in die Zukunft" >

Knowledge, competence and values - New HOF image brochure

Since the foundation of the company more than 30 years ago, it has always been important for HOF to convey a clear image company to its customers.

However, companies are also subject to the changing times. This leaves a mark on one‘s own corporate image, the same applies to HOF. Corporate messages have to be reconsidered, positioning has to be optimized.

In recent years HOF has continuously developed and has now grown to almost 300 employees.
This further development includes, among other things, the constant search for innovative solutions and this is only possible with excellent technological knowledge, creative curiosity and excellently qualified employees.

This also includes a special technological know-how and an extraordinary innovative strength. Supporting pillars and decisive success factors.

HOF is the professional market leader, a globally recognized company, you can rely on its competence. HOF’s guiding principle is based on values such as respect, fairness and loyalty in dealing with one another.

This is HOF, a living corporate philosophy,

enjoy reading >

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