Customer-specific ventilation systems, fans, plant and special construction as well as refrigeration and air conditioning technology with in-house production.
Grotejohann GmbH
Haan · Langenbach (near Kirburg)New on Amplifa
About Grotejohann
Founded in 1945, Grotejohann GmbH is a company in the building services engineering (TGA) sector with over 75 years of experience in air conditioning and ventilation technology. The company, with 50 employees, offers consulting, planning, design, production, installation and maintenance from a single source. Its product range includes customer-specific ventilation systems, complete plant and special constructions such as industrial extraction systems, air transport systems and UV exposure ducts, its own in-house fan manufacturing in steel or stainless steel, refrigeration and air conditioning systems as well as filter technology for supply and exhaust air. With its own production and high flexibility, Grotejohann can actively influence delivery times. Customers include companies from the construction, textile, chemical, metal, wood and automotive industries, as well as hospitals and public buildings. Germany and Europe are supplied from the headquarters in Haan and the branch in Langenbach (near Kirburg).
- Site
- Haan
- Processes
- Ventilation construction (customer-specific ventilation systems), Plant & special construction (industrial extraction, air transport, UV exposure duct), Fan manufacturing (in-house production, customer-specific solutions), Refrigeration & air conditioning technology (consulting, planning, design, installation, servicing,, Filter technology (air filters for supply and exhaust air), Consulting, planning, design (building services engineering), Installation (e.g. lifting of loads up to 6600 kg), Maintenance / servicing after commissioning
- Materials
- Steel, Stainless steel, Filter technology
- Certificates
- ISO 9001
- Founded
- 1945
- Employees
- 50
- Industries
- Construction industry, Textile industry, Chemical industry, Metal industry, Wood industry, Automotive industry
- 01
Consulting
- 02
Planning
- 03
Design
- 04
Production
- 05
Installation
- 06
Commissioning
- 07
Maintenance / Servicing
Materials & Processes
Steel
Material for fans and ventilation system components in in-house fan manufacturing.
Stainless steel
Used for customer-specific fan solutions with increased requirements, e.g. in the chemical industry.
Filter technology
Air filters for cleaning supply air in ventilation systems and contaminated exhaust air, e.g. from forging and coating processes.
Locations
Haan
DEHeadquarters, production, planning and installation
- Materials
- Steel, stainless steel
Langenbach (near Kirburg)
DEBranch
Components & Products
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Ventilation construction (customer-specific ventilation systems)Assembly | – | – | – | – | – |
| Plant & special construction (industrial extraction, air transport, UV exposure duct)Assembly | – | – | – | – | – |
| Fan manufacturing (in-house production, customer-specific solutions)Joining | – | – | – | – | Steel, Stainless steel |
| Refrigeration & air conditioning technology (consulting, planning, design, installation, servicing,Assembly | – | – | – | – | – |
| Filter technology (air filters for supply and exhaust air)Assembly | – | – | – | – | – |
| Consulting, planning, design (building services engineering)Engineering | – | – | – | – | – |
| Installation (e.g. lifting of loads up to 6600 kg)Assembly | – | – | 6600 kg | – | – |
| Maintenance / servicing after commissioningAssembly | – | – | – | – | – |
| In-house production (modern production and installation techniques, joining processes)Joining | – | – | – | – | – |
Additional services
Reference customers
Quality
Grotejohann relies on qualified employees, powerful software and modern production and installation techniques, and works together with reliable partner companies. Certificates are not shown on the website.
| Evidence | Haan |
|---|---|
| ISO 9001 |
History
- 1945
Company founded; development into a company in the air conditioning and ventilation sector with over 75 years of experience.