Planning, installation, and maintenance of refrigeration, air conditioning, and ventilation technology for industry and gastronomy.

4K GmbH
NeuenhausNew on Amplifa
About us
4K GmbH is a specialized provider in the field of refrigeration, air conditioning, and ventilation technology. With many years of professional experience in refrigeration system construction, a comprehensive solution for operational requirements has been offered since 2014. The range covers the planning, sale, installation, and preventive maintenance of refrigeration technology for cooling and deep-freeze rooms. The services are aimed at various industries such as food crafts, industry, and gastronomy. In addition, air conditioning for office buildings up to server cooling as well as private applications are implemented. The team ensures not only pure functionality but also consideration of energy efficiency and customer service friendliness. The location in Neuenhaus enables a fast response time, particularly through the 24/7 emergency service.
- Site
- Neuenhaus
- Processes
- Refrigeration technology (consulting, planning, sale, installation), Air conditioning technology (office air conditioning, production air conditioning, air, Ventilation technology (repair and maintenance of ventilation systems), Proactive/preventive maintenance, Energy optimization (setpoint optimization, heat utilization), Repairs to refrigeration and air conditioning systems, Modernization of systems, 24/7 emergency service (response time approx. 6 hours)
- Certificates
- ISO 9001
- Founded
- 2014
- Industries
- Food crafts, Food industry, Gastronomy, Office buildings, Private customers
- 01
Inquiry -> Diagnosis/troubleshooting -> Solution/installation ->
Locations
Neuenhaus
DEHeadquarters
Systems
DEReference plant
Vehicles
DEMobility
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Refrigeration technology (consulting, planning, sale, installation)Installation | – | – | – | – | – |
| Air conditioning technology (office air conditioning, production air conditioning, airInstallation | – | – | – | – | – |
| Ventilation technology (repair and maintenance of ventilation systems)Installation | – | – | – | – | – |
| Proactive/preventive maintenanceTesting | – | – | – | – | – |
| Energy optimization (setpoint optimization, heat utilization)Engineering | – | – | – | – | – |
| Repairs to refrigeration and air conditioning systemsInstallation | – | – | – | – | – |
| Modernization of systemsInstallation | – | – | – | – | – |
| 24/7 emergency service (response time approx. 6 hours)Testing | – | – | – | – | – |
| Small series production for gastronomy equipment manufacturersInstallation | – | – | – | – | – |
Additional services
Reference customers
Quality assurance
The work places value on the flawless functioning of the systems, compliance with energy efficiency, and the reliability of the delivered and installed systems.
| Evidence | Neuenhaus |
|---|---|
| ISO 9001 |
History
- 2014
Foundation of 4K GmbH by Jens Köster and Hanjo Koelmann
- 2024
Six apprentices have completed their training in twelve years