
Viessmann Climate Solutions develops and manufactures climate and energy solutions – from heat pumps and heating boilers to solar thermal systems.

Viessmann Holding International GmbH (Viessmann Climate Solutions)
Allendorf (Eder) · Hof · Berlin · Faulquemont (FR) · Waterloo (CA) · Dachang (CN)New on Amplifa
About Viessmann Climate Solutions
Viessmann Climate Solutions is a manufacturer of integrated climate and energy solutions headquartered in Allendorf (Eder). Founded in 1917, the company produces heating technology, heat pumps, solar collectors, refrigeration technology, ventilation systems, control technology and battery storage systems for residential buildings, commerce, industry and municipalities. Series production includes gas condensing boilers, large-scale heat pumps, combined heat and power units as well as hot water and steam generators, alongside various metalworking technologies and additive manufacturing processes in prototype construction. Materials include steel and stainless steel; the focus is on natural refrigerants such as propane (R290) and hydrogen-ready operation. Research and development is concentrated in the Technikum opened in 2017 in Allendorf, which spans from prototype to series maturity and includes laboratories for chemistry, electrical engineering, metallurgy and acoustics. Since January 2024, the business division has been part of the Carrier Global Corporation; with 120 sales offices in 74 countries and production sites in twelve countries, the company has an international presence.
- Site
- Allendorf (Eder)
- Processes
- Prototype construction (metalworking technologies and additive manufacturing processes), Test bench testing of heat generators (endurance and long-term testing), Chemistry laboratory: pressure deformation residual measurements, condensate resistance tests, Electrical engineering laboratory: aging and environmental simulation tests, vibration and function, Metallurgy laboratory: materials testing with scanning electron microscope and computed tomography, Acoustics measurement center: measurement of the operating noise of all heat generators in four, Series production of heating technology products (boiler manufacturing, heat pumps, battery storage, Digital services (ViCare, ViGuide, ViBooks, ViParts, PartnerPortal)
- Materials
- Steel, Stainless steel, Propane (refrigerant, GWP-100 0.02), Hydrogen, Propane (refrigerant)
- Certificates
- ISO 9001, ISO 14001, ISO 45001, ISO 50001
- Founded
- 1917
- Industries
- Residential buildings (new construction and modernization), Commerce and industry, Municipalities / district heating, Energy supply
- 01
Research & Development (Technikum)
- 02
Prototype construction (metalworking and additive manufacturing)
- 03
Test bench and long-term testing
- 04
Series production and assembly
- 05
Digital Services and Service Solutions
- 06
Installation and maintenance
Materials & Processes
Steel
Used in heat generators such as heating boilers and large-scale systems.
Stainless steel
Material for corrosion-resistant components in heating technology products.
Propane (refrigerant)
Natural refrigerant with a GWP-100 of 0.02 for heat pumps such as the Vitocal 250-A.
Hydrogen
Energy source for gas-fired heating appliances and fuel cells, certified for up to 20 % and 100 % H2 respectively.
Sites

Allendorf (Eder)
DEHeadquarters, production, research & development (Technikum)
- Materials
- Steel, stainless steel
- Scanning electron microscope
- Computed tomography scanner (materials testing)
- 4 acoustic measurement rooms (acoustics measurement center)
Hof
DEProduction plant (since 1973)
Berlin
DESite including Viessmann Refrigeration Solutions, Builder wattx
Faulquemont
FRProduction plant (since 1972)
Waterloo
CAProduction plant (since 1978)
Dachang
CNProduction site for vacuum tube collectors (solar thermal)
Components & Products



Inside the production



Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Prototype construction (metalworking technologies and additive manufacturing processes)Additive | – | – | – | – | Metals |
| Test bench testing of heat generators (endurance and long-term testing)Testing | – | – | – | – | – |
| Chemistry laboratory: pressure deformation residual measurements, condensate resistance testsTesting | – | – | – | – | – |
| Electrical engineering laboratory: aging and environmental simulation tests, vibration and functionTesting | – | – | – | – | – |
| Metallurgy laboratory: materials testing with scanning electron microscope and computed tomographyTesting | – | – | – | – | Materials for heat generators |
| Acoustics measurement center: measurement of the operating noise of all heat generators in fourTesting | – | – | – | – | – |
| Series production of heating technology products (boiler manufacturing, heat pumps, battery storageAssembly | – | – | – | – | Steel, Stainless steel |
3 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| Scanning electron microscope | – | – | – | – | Allendorf (Eder) |
| Computed tomography scanner (materials testing) | – | – | – | – | Allendorf (Eder) |
| Acoustic measurement room (acoustics measurement center) | – | 4 | – | – | Allendorf (Eder) |
Additional services
Reference customers
Quality & Certificates
Viessmann Climate Solutions pursues a quality strategy of prevention and reliability from development through manufacturing to service. In the Technikum, materials and products are tested using, among other things, a scanning electron microscope, computed tomography, endurance and long-term testing.
| Evidence | Allendorf (Eder) |
|---|---|
| ISO 9001 | |
| ISO 14001 | |
| ISO 45001 | |
| ISO 50001 |