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Welcome to CLAGE

Portrait: We introduce ourselves.

Simply efficient.
We are a medium-sized industrial company for energy-saving hot water appliances from the northern German Hanseatic city of Lüneburg. More than 290 employees are responsible for development, design, production and sales of the energy-efficient devices with high quality standards. All under one roof!
2023: We are TOP 100
In 2023 CLAGE was awarded the Top 100 seal and is now one of the Top 100 most innovative companies. The competition uses a demanding selection procedure to assess the innovation potential of German medium-sized companies. Among other things, the innovation success, the innovation climate, the organization, the external orientation and the management are evaluated.
Expert
We are thought leaders in the field of decentralised hot water supply. As the specialist for instantaneous water heaters, we offer a wide range of products with many individual solutions. From A for air hand dryer to Z for Zip water systems – everything has to do with hot water. As market leader for instantaneous water heaters, we are constantly looking with great commitment for new solutions and innovations in all areas of decentralised water heating. For this we have been awarded as an ambassador for innovation by the Chamber of Industry and Commerce.
Efficiency
The “E” in our name, CLAGE, is accentuated, because “E” stands for efficiency. But what do we understand by this and how do you benefit from it? Much even: A large product range of energy-efficient devices, which are characterized by clever technology, small and compact design, as well as clear and robust construction. A corresponding way of working is also part of it. Our customers feel the "short distances" to our competent and trained employees.
Responsibility
Thanks to great passion and personality, you can feel the responsibility at CLAGE. This is noticeable in consulting and service. Of course, we also take responsibility for our products. Because the energy- and water-saving devices give you the good feeling of safety, hygiene, comfort and reliability.
Flexibility
We not only want to sell you "one unit", but also offer you energy-efficient decentralised hot water solutions. This includes a high degree of flexibility in order to develop individual solutions. And we pursue many goals: Saving energy and water, comfort, hygiene, durable products, easy installation and operation, fast and good service. Smart technology is a prerequisite.
For the sake of the environment
The process up to the finished product can be described as extremely sustainable and is continuously put to the test. We work in accordance with the DIN EN ISO 14001:2015 environmental management standard, and we go one step further, because we pay attention to the highest material efficiency. The units are designed in such a way that many parts such as heating cartridges can be replaced. This reduces waste and increases the service life of the products. When we work with service providers, these are preferably local partners. This also protects the environment.
Quality since 1951
"Finally and immediately warm water" is what many of our customers have been saying for several decades. As early as 1951, Claus-Holmer Gerdes began selling small instantaneous water heaters. Today, we are a third-generation owner-managed industrial company.
Simply efficient.
We are a medium-sized industrial company for energy-saving hot water appliances from the northern German Hanseatic city of Lüneburg. More than 290 employees are responsible for development, design, production and sales of the energy-efficient devices with high quality standards. All under one roof!
2023: We are TOP 100
In 2023 CLAGE was awarded the Top 100 seal and is now one of the Top 100 most innovative companies. The competition uses a demanding selection procedure to assess the innovation potential of German medium-sized companies. Among other things, the innovation success, the innovation climate, the organization, the external orientation and the management are evaluated.
Expert
We are thought leaders in the field of decentralised hot water supply. As the specialist for instantaneous water heaters, we offer a wide range of products with many individual solutions. From A for air hand dryer to Z for Zip water systems – everything has to do with hot water. As market leader for instantaneous water heaters, we are constantly looking with great commitment for new solutions and innovations in all areas of decentralised water heating. For this we have been awarded as an ambassador for innovation by the Chamber of Industry and Commerce.
Efficiency
The “E” in our name, CLAGE, is accentuated, because “E” stands for efficiency. But what do we understand by this and how do you benefit from it? Much even: A large product range of energy-efficient devices, which are characterized by clever technology, small and compact design, as well as clear and robust construction. A corresponding way of working is also part of it. Our customers feel the "short distances" to our competent and trained employees.
Responsibility
Thanks to great passion and personality, you can feel the responsibility at CLAGE. This is noticeable in consulting and service. Of course, we also take responsibility for our products. Because the energy- and water-saving devices give you the good feeling of safety, hygiene, comfort and reliability.
Flexibility
We not only want to sell you "one unit", but also offer you energy-efficient decentralised hot water solutions. This includes a high degree of flexibility in order to develop individual solutions. And we pursue many goals: Saving energy and water, comfort, hygiene, durable products, easy installation and operation, fast and good service. Smart technology is a prerequisite.
For the sake of the environment
The process up to the finished product can be described as extremely sustainable and is continuously put to the test. We work in accordance with the DIN EN ISO 14001:2015 environmental management standard, and we go one step further, because we pay attention to the highest material efficiency. The units are designed in such a way that many parts such as heating cartridges can be replaced. This reduces waste and increases the service life of the products. When we work with service providers, these are preferably local partners. This also protects the environment.
Quality since 1951
"Finally and immediately warm water" is what many of our customers have been saying for several decades. As early as 1951, Claus-Holmer Gerdes began selling small instantaneous water heaters. Today, we are a third-generation owner-managed industrial company.

Environment and quality: our guidelines

Quality guideline
In order to always keep our quality promise to customers and maintain customer satisfaction at a high level, our processes are subject to constant monitoring and continuous improvement. CLAGE is a certified manufacturer of the ZVSHK and according to DIN EN ISO 9001:2015 certified.
Every single employee shares responsibility for the quality of our products and processes. Through the continuous further development of our quality management system in accordance with international standard DIN EN ISO 9001:2015 the operational processes and procedures are documented and their compliance is ensured.
Hygiene is the top priority at CLAGE. That is why we decided back in 2017 to have our compliance with the hygienic requirements of the Drinking Water Ordinance confirmed by the certification of the internationally renowned institute Dr. Brill Partner. The practical implementation takes place through the regular performance of hygiene audits, the continuous training of employees, the competence development of our new colleagues and trainees as part of the onboarding process and a close-meshed monitoring of the water quality in our operating buildings.
Environment guideline
For CLAGE, protecting our environment is an obligation towards customers, fellow human beings and future generations. We make an important contribution to this by implementing and further developing our environmental management system according to DIN EN ISO 14001:2015 certified environmental management system.
By providing adequate resources, the management and through its conscious actions, each employee contributes significantly to the protection of the environment in the operational environment. This awareness is expanded through recurring training and consideration in the regular internal environmental management audits.
When procuring raw and auxiliary materials for the production of energy-efficient instantaneous water heaters, CLAGE takes ecological criteria into account - as far as possible and economically justifiable. Preference is given to suppliers who attach as much importance to environmental protection as we do.
As a pioneering and future-oriented company, CLAGE independently and voluntarily maintains partnerships, cooperations and dialogues with all parties involved in environmental protection.
The "Zentralverband Sanitär Heizung Klima" (ZVSHK, "Central Association for Sanitation, Heating and Air Conditioning") has certified CLAGE with its quality mark. This certificate distinguishes the high product quality of our instantaneous water heaters, storage tanks, fittings and hand dryers and guarantees the special performance in terms of safety and service. Customers thus receive manufacturer-independent, neutral support for purchasing decisions in the SHK product segment.
Quality guideline
In order to always keep our quality promise to customers and maintain customer satisfaction at a high level, our processes are subject to constant monitoring and continuous improvement. CLAGE is a certified manufacturer of the ZVSHK and according to DIN EN ISO 9001:2015 certified.
Every single employee shares responsibility for the quality of our products and processes. Through the continuous further development of our quality management system in accordance with international standard DIN EN ISO 9001:2015 the operational processes and procedures are documented and their compliance is ensured.
Hygiene is the top priority at CLAGE. That is why we decided back in 2017 to have our compliance with the hygienic requirements of the Drinking Water Ordinance confirmed by the certification of the internationally renowned institute Dr. Brill Partner. The practical implementation takes place through the regular performance of hygiene audits, the continuous training of employees, the competence development of our new colleagues and trainees as part of the onboarding process and a close-meshed monitoring of the water quality in our operating buildings.
Environment guideline
For CLAGE, protecting our environment is an obligation towards customers, fellow human beings and future generations. We make an important contribution to this by implementing and further developing our environmental management system according to DIN EN ISO 14001:2015 certified environmental management system.
By providing adequate resources, the management and through its conscious actions, each employee contributes significantly to the protection of the environment in the operational environment. This awareness is expanded through recurring training and consideration in the regular internal environmental management audits.
When procuring raw and auxiliary materials for the production of energy-efficient instantaneous water heaters, CLAGE takes ecological criteria into account - as far as possible and economically justifiable. Preference is given to suppliers who attach as much importance to environmental protection as we do.
As a pioneering and future-oriented company, CLAGE independently and voluntarily maintains partnerships, cooperations and dialogues with all parties involved in environmental protection.
The "Zentralverband Sanitär Heizung Klima" (ZVSHK, "Central Association for Sanitation, Heating and Air Conditioning") has certified CLAGE with its quality mark. This certificate distinguishes the high product quality of our instantaneous water heaters, storage tanks, fittings and hand dryers and guarantees the special performance in terms of safety and service. Customers thus receive manufacturer-independent, neutral support for purchasing decisions in the SHK product segment.

The history of CLAGE.

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Jobs and carreer. Working at CLAGE.

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News and trade fairs. The world of hot water.

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