Planning, construction, maintenance and 24/7 emergency service for commercial refrigeration and air conditioning systems, including systems with natural refrigerants.
HERZOG Kälte-Klima Anlagenbau GmbH
Graz (Gradnerstraße 60) · Wiener Neudorf (Ricoweg 30B1)New on Amplifa
About HERZOG Kälte-Klima
HERZOG Kälte-Klima Anlagenbau GmbH is an Austrian family-owned company based in Graz that has been planning, building, servicing and maintaining commercial refrigeration and air conditioning systems since 1965. The portfolio covers commercial refrigeration and cold rooms with natural refrigerants such as CO₂ (R-744) and propane (R-290), transcritical CO₂ systems for deep freezing, normal cooling, chilled water and ice production, as well as VRF and multi-split air conditioning systems with heat recovery for offices and commercial premises. In addition, the company offers custom plant engineering, such as a chilled water unit with titanium plate heat exchangers for saltwater lobster cooling, fermentation room technology with temperature and humidity control, and PLC control technology based on Siemens with digital system visualization. Maintenance services include F-gas leak testing in accordance with EU Regulation 2024/573, a digital plant logbook in the HERZOG portal, networked live plant monitoring and HACCP monitoring. In the event of breakdowns, a 24/7 emergency standby service and rental refrigeration (mobile chillers up to 140 kW) provide rapid relief. Customers include large bakeries, meat and ham producers, seafood importers, retail chains and insurance companies. According to the company, around 55 employees at the Graz and Wiener Neudorf sites have realized more than 10,000 systems.
- Site
- Graz
- Processes
- Air conditioning system construction (multi-split, VRF, chilled water air conditioning), Commercial refrigeration & cold rooms with natural refrigerants, Transcritical CO2/R744 refrigeration systems (deep freezing, normal cooling, chilled water, ice, System construction & PLC control technology (control technology upgrade, digital system, Custom-built chilled water unit with titanium plate heat exchangers (saltwater/lobster cooling), Fermentation rooms & automatic proofing systems (temperature -18°C to +30°C, humidity control,, F-gas maintenance & leak testing (EU 2024/573, Category I/II), 24/7 emergency service & rental refrigeration (mobile chillers, setup <4h, restart <48h)
- Materials
- CO2 (R-744), Propane, R-32, Titanium Grade 2, CO₂ (R-744)
- Certificates
- F-Gas Category I/II (EU 2024/573), Digital plant logbook / HACCP monitoring, Networked live plant monitoring
- Founded
- 1965
- Employees
- 55
- Industries
- Food production & bakeries, Meat processing & ham production, Seafood import & gastronomy, Retail & branch operations, Office buildings & headquarters, Facility services (branch networks)
- 01
Thermodynamic design & indicative price calculation
- 02
Planning
- 03
System construction & installation
- 04
PLC control technology & system visualization
- 05
Commissioning
- 06
Maintenance, F-gas testing & digital monitoring
- 07
24/7 emergency service & rental refrigeration
Refrigerants & Materials
CO₂ (R-744)
Natural refrigerant for transcritical systems in deep freezing, normal cooling, chilled water, ice production and fermentation room applications.
Propane
Natural, F-gas-compliant refrigerant for cold rooms and commercial refrigeration.
R-32
Refrigerant for 3-pipe VRF systems with simultaneous heating and cooling.
Titanium Grade 2
For plate heat exchangers of the custom chilled water unit in saltwater-resistant lobster cooling.
Locations
Graz (Headquarters & South)
ATHeadquarters, planning, system construction, service
- Materials
- CO₂ (R-744), Propane (R-290), R-32, Titanium Grade 2
- PLC control (Siemens)
- Mobile chillers / rental refrigeration systems
Wiener Neudorf (East)
ATBranch office Lower Austria, system construction and service for eastern Austria
- Materials
- CO₂ (R-744), Propane (R-290), R-32
- Mobile chillers / rental refrigeration systems
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Air conditioning system construction (multi-split, VRF, chilled water air conditioning)Installation | – | – | – | – | Refrigerant R-32, Refrigerant R-744 (CO2), Refrigerant R-290 (propane) |
| Commercial refrigeration & cold rooms with natural refrigerantsInstallation | – | – | – | – | CO2 (R-744), Propane (R-290) |
| Transcritical CO2/R744 refrigeration systems (deep freezing, normal cooling, chilled water, iceInstallation | – | – | – | – | CO2/R744 |
| System construction & PLC control technology (control technology upgrade, digital systemEngineering | – | – | – | – | – |
| Custom-built chilled water unit with titanium plate heat exchangers (saltwater/lobster cooling)Installation | – | – | – | – | Titanium Grade 2 |
| Fermentation rooms & automatic proofing systems (temperature -18°C to +30°C, humidity control,Installation | -18°C to +30°C target temperature | – | – | – | CO2 / R744 |
| F-gas maintenance & leak testing (EU 2024/573, Category I/II)Testing | – | – | – | – | – |
| 24/7 emergency service & rental refrigeration (mobile chillers, setup <4h, restart <48h)Installation | – | – | – | – | – |
| Rental refrigeration after fire (emergency cooling 140 kW)Installation | – | – | 140 kW cooling capacity | – | – |
| System overhaul during ongoing operationInstallation | – | – | – | – | – |
| Refrigerant conversion to climate-friendly refrigerants (F-gas ready, GWP <150)Installation | – | – | – | – | natural refrigerants, CO2 (R-744), Propane (R-290) |
| Thermodynamic design & indicative price calculation (design software)Engineering | – | – | – | – | – |
| 3-pipe VRF systems with heat recovery (simultaneous heating & cooling)Installation | – | – | – | – | R-32 |
| Networked live plant monitoring (operating pressures, temperatures, early fault detection)Testing | – | – | – | – | – |
| HACCP monitoring & digital plant logbookTesting | – | – | – | – | – |
3 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| PLC control | Siemens | – | – | – | – |
| Titanium chilled water unit (custom-built) | – | – | – | – | – |
| Mobile chiller / rental refrigeration system | – | – | – | – | Graz & Vienna |
Additional services
Reference customers
Quality & Testing
Quality assurance includes F-gas leak testing in accordance with EU 2024/573 by Category I certified personnel, HACCP monitoring, networked live monitoring of operating pressures and temperatures, and a complete digital plant logbook in the HERZOG portal.
| Evidence | Graz (Headquarters & South) | Wiener Neudorf (East) |
|---|---|---|
| F-Gas Category I/II (EU 2024/573) | ||
| Digital plant logbook / HACCP monitoring | ||
| Networked live plant monitoring |
Company History
- 1965
Foundation of the family-owned company in Graz.
Expansion to two locations in Graz and Wiener Neudorf; according to the company, over 10,000 systems and more than 500 commercial and industrial businesses under service.