01
Analysis and advice
First the task, then a survey of existing equipment, processes and the building itself. After that you have a first estimate of duration and cost.
survey existing plantshow synergiescheck funding options
Heidinger GmbH & Co. KG, Mühlacker, Germany
Cooling, climate control and heat pumps for industry and buildings.
From a single chiller to the complete building services. We clarify the task with you, put the system together with the works and stay with the project until handover.
- around 60
- years of plant engineering
- 3rd
- generation, family-owned
- 5 kW to 2 MW
- capacity range
- ISO 4 to 9
- cleanroom classes
How a project runs
Everything from one source, from analysis to service.
Cooling and climate projects rarely fail because of the machine. They fail at the interfaces: ventilation, electrics, water treatment, fire protection, permits. Heidinger plans in-house, builds the systems itself, builds the control cabinets itself and installs with its own teams. One point of contact instead of six trades waiting for each other.
Project sequence
A single machine, an expansion stage or a complete system. Including existing buildings and ongoing operation.
02
Planning
The in-house building services planning office defines every parameter for each room and usage area, together with you.
temperature and accuracyrelative humidityair change rate and air purity
03
Sizing and quotation
Sizing of the components, costing of the trades involved, quotation with a fixed-price guarantee.
central ventilation unitscentral chilled water systemscontrol units
04
Execution
Continuous overall site management with fixed contacts. Subcontracted trades are coordinated, installation is done by Heidinger's own teams.
water treatment, fire protection, insulationsteelwork and electricspermits and inspections
05
Commissioning and handover
Balancing of the whole system against the agreed parameters, then a walkthrough and training for your people.
operator trainingas-built documents and drawingsservice and maintenance plan
06
After sales
Regular checks by Heidinger's own technicians, and readjustment when your use of the building changes.
standby line outside working hoursremote monitoringremote access to the system
What is possible
Nine building blocks that work together.
A plant rarely needs just a chiller. Usually there is ventilation attached to it, a water circuit, heat recovery and a control system that holds it all together. Heidinger builds these blocks itself and matches them to each other.
Chillers and heat pumps
The right machine for each application, from 5 kW to 2 MW, up to +85 °C as standard. Available with low-GWP or natural refrigerants. When time is short, the fast lane option brings considerably shorter delivery times.
Free cooling systems
On many days of the year the outside air is enough to cool the circuit. Depending on system temperature that saves a great deal of electricity, with the compressor switched off.
Process ventilation and machine extraction
Precise process temperature control, process supply and process-specific supply and exhaust air, designed around what actually happens on the shop floor.
Central supply and exhaust air
Cooling, heating, filtering, humidifying, dehumidifying. One system for all areas instead of many separate units.
Pump station and water treatment
Distribution of hot and chilled water, thermal storage, water treatment and filtration. Also for special applications such as ultrasonic baths or cooling laser machines.
Cleanrooms and precision measuring rooms
Class ISO 9 to ISO 4 to ISO 14644-1, in new buildings and in existing ones. Full service from planning through qualification to technical certification.
Heat recovery
Waste heat from the process is used rather than cooled away: for heating, hot water or the next process step. Cold recovery during regasification is possible too.
Self-sufficiency and storage
Combined heat and power units, adsorption and absorption cooling, photovoltaics and energy storage, plus backup systems as blackout protection.
EXOBOX
The complete plant in a container, pre-assembled in Heidinger's own container yard. It arrives ready to run, saves space inside the building and meets the legal requirements from day one.
Series
EXZELLENZ GT: heat pumps from in-house production.
The in-house series, manufactured at the Mühlacker site, as an air-to-water or water-to-water version. Modular and expandable between 35 and 500 kW per unit. The natural refrigerant R290 has a GWP of 3; R513A is available as an alternative.
| Type | Design | Heating | Cooling | Input | SCOP | SEER |
|---|---|---|---|---|---|---|
| GT34LW | air-to-water | 34 kW | 40 kW | 13 kW | 5.23 | 5.7 |
| GT68LW | air-to-water | 68 kW | 70 kW | 26 kW | 5.23 | 5.4 |
| GT100LW | air-to-water | 109 kW | 109 kW | 41 kW | 5.23 | 5.2 |
| GT150LW | air-to-water | 150 kW | 150 kW | 57 kW | 4.97 | 5.0 |
| GT50WW | water-to-water | 32 to 91 kW | 26 to 72 kW | 18.9 kW | 6.13 | 5.2 |
| GT100WW | water-to-water | 55 to 125 kW | 45 to 139 kW | 33.4 kW | 6.09 | 5.0 |
Air-to-water: heating capacity at 45 °C flow and −12 °C ambient, cooling capacity at 6 °C flow and +38 °C ambient. Water-to-water: cooling capacity at 8 °C flow. Sizes GT300LW and GT500LW go beyond this, technical data on request. Figures as published by Heidinger, January 2026, subject to technical change.
Controls
EXOGATE holds the system together.
Heidinger's own control system ties the existing building services together across manufacturers and shows where energy is being lost. For non-residential buildings in Germany this is no longer optional: above 290 kW, section 71a of the Buildings Energy Act requires building automation with digital energy monitoring.
- Vendor-independent
- BACnet MS/TP, Modbus RTU and TCP, M-Bus and KNX PL-Link, plus analogue signals at 0 to 10 V or 4 to 20 mA. Existing equipment stays where it is.
- Everything in view
- Operation via a 7-inch touch display in the cabinet door, with a system diagram and all operating states. Trend recording included.
- Peak loads and forecasting
- Peak load management on the generation and the consumption side, wear forecasting for compressors, fans and pumps, plus automated suggestions for operating mode and system temperatures.
- Remote service, secured
- Controller and interface sit in their own protected network; remote service runs over a secured connection and every other access is blocked. Smart grid interface built in, 5G modem optional.
Cleanrooms
From ISO 9 to ISO 4, even during ongoing operation.
The classes in ISO 14644-1 define how many particles per cubic metre of air are permitted. The lower the class number, the cleaner the air. Heidinger fits out cleanrooms in new and existing buildings, measures with its own equipment and qualifies the rooms before validation.
| Class | Particles from 0.5 µm per m³ |
|---|---|
| ISO 4 | 352 |
| ISO 5 | 3,520 |
| ISO 6 | 35,200 |
| ISO 7 | 352,000 |
| ISO 8 | 3,520,000 |
| ISO 9 | 35,200,000 |
Besides air purity, precise temperature control, defined humidity and low sound pressure matter. Containment rooms of levels S1 to S3 are possible for laboratory and research environments; for medical use, DIN 1946-4 and VDI 6022 apply.
Where Heidinger systems run
IndustryFoodMedical technologyLaboratory and researchPublic buildingsPlant engineering
Our role
One point of contact, from the first conversation to handover.
We do not sell cooling systems from a catalogue. We clarify what the job actually is, bring you together with the works in Mühlacker and stay in the project until the system runs.
01Clarify the need. Which process, which temperatures, which rooms, what is already there.
02Put the solution together. A single machine, an expansion stage or a complete system, together with the works in Mühlacker.
03Accompany the project. From quotation through execution and commissioning to training your people.
Besides cooling systems we arrange extrusion lines and supply safety gloves from stock. Just ask.
Frequent questions
What people ask us beforehand.
- Who will be my contractual partner?
- Heidinger. We arrange and accompany the project; quotation and order run through the works in Mühlacker. Nothing changes for you in terms of who to call: you still call us.
- Which capacities are possible?
- The range runs from 5 kW to 2 MW, up to +85 °C as standard. The in-house EXZELLENZ GT series covers 35 to 500 kW per unit and is modular. Larger plants are designed individually.
- Which refrigerant is used?
- Wherever possible the natural refrigerant R290 (propane) with a GWP of 3, alternatively R513A with a GWP of 631. R290 comes with a tested safety concept: gas detection and explosion-proof ventilation in the machine compartment, warning and alarm units on the unit and via remote transmission.
- My building is existing stock. Is that even possible?
- Yes, and it is the rule rather than the exception. Heidinger explicitly works on conversions in existing buildings and on refurbishing old plant, including cleanrooms while the business keeps running. If there is no room in the plant room, the technology comes as an EXOBOX into the yard.
- What does section 71a of the German Buildings Energy Act require?
- Non-residential buildings with more than 290 kW of rated heating, air conditioning or ventilation capacity had to be equipped with building automation and digital energy monitoring by 31 December 2024. Among other things, this requires continuous monitoring of consumption, an open interface to the data and the detection of efficiency losses. EXOGATE meets this and corresponds to automation level B under DIN V 18599-11.
- How quickly can a system be up and running?
- That depends on the project. Two routes shorten it considerably: the fast lane option on the machines, and the EXOBOX, where all components are pre-assembled and which is ready to run within a few days. No building site inside your plant, no interruption to production.
- Is there public funding?
- Often yes, particularly for heat recovery, heat pumps and efficiency measures. Heidinger advises on eligibility and supports the application. That is part of the consultation and not a separate order.
Contact
Let us talk about your project.
Briefly describe what needs to be cooled, heated or ventilated, or where the existing system reaches its limit. We will get back to you. Prefer the phone? That works too.