What TLK Thermo does

TLK-Thermo GmbH is a privately held German engineering services and software company, founded in 2003 and headquartered in Braunschweig. The company specializes in the design, analysis, and optimization of thermal systems, serving customers across stationary refrigeration and heat pumps, mobile air conditioning and vehicle thermal management, battery systems, hydrogen thermal systems, process engineering, and control engineering. Its technical foundation is built on Modelica-based physical modeling, 0D/1D system simulation, CFD and field calculation, and machine-learning-assisted methods, paired with in-house experimental validation from a 1,500 m² measurement laboratory.

The company operates a modular software platform comprising nine proprietary products: TIL Suite (thermal system modeling and simulation), TILMedia Suite (thermophysical properties database), ClaRa+ (Clausius-Rankine cycle simulation), DaVE (visualization), TISC Suite (co-simulation across multiple simulation programs), Simulator Suite (model execution and evaluation), Optimization Suite (model-based optimization), ModelFitter (parameter fitting and design of experiments), and MoBA Automation (workflow automation). These products collectively span the thermal-systems engineering workflow from property data and model construction to execution, optimization, and integration with external simulators.

Revenue is generated through a combination of enterprise software licensing (via a dedicated download portal at download.tlk-thermo.com), custom software development, engineering simulation and measurement services, and professional training courses on Modelica, TIL, DaVE, vehicle air conditioning, and ClaRa+. The company distributes through direct enterprise sales from Braunschweig complemented by a network of international sales partners operating primarily across EMEA. It holds ISO 9001 quality management certification and TISAX information security certification, the latter supporting automotive industry engagements. No public revenue, funding rounds, or named customer references are disclosed.

Name

TLK Thermo

Legal name

TLK-Thermo GmbH

Website

https://tlk-thermo.de

Company type

Private

Founded year

2003

Operating status

Operating

Headcount range

11–50 employees

Short description

TLK-Thermo GmbH is a privately held German engineering services and software firm providing Modelica-based thermal systems simulation, proprietary software products, and laboratory measurement services to industrial customers across refrigeration, automotive, battery, hydrogen, and process engineering verticals, primarily across EMEA.

Ownership category

akta.pro rank

Product category

Thermal Systems Simulation Software

NAICS

Ventilation, Heating, Air-Conditioning, and Commercial Refrigeration Equipment Manufacturing (33341), Power Boiler and Heat Exchanger Manufacturing (332410), Industrial Process Furnace and Oven Manufacturing (333994)

SIC

Refrigeration & Service Industry Machinery (3580), Air-Cond & Warm Air Heatg Equip & Comm & Indl Refrig Equip (3585), Heating Equipment, Except Electric & Warm Air Furnaces (3433)

akta.pro primary industry

Refrigeration Components & Controls (Compressors, Valves, Sensors) (IMAHAKAH)

akta.pro secondary industries

Automotive Thermal Management for Electrified Powertrains (Battery/Inverter/Motor Cooling) (IMACALAD), Heat Transfer Equipment (Heat Exchangers, Boilers, Condensers) (IMAHAEAC), Chillers & Cooling Plant Equipment (IMAHAKAE)

Keywords

• Thermal systems simulation
• Modelica software
• Engineering services
• Thermophysical properties
• Refrigeration simulation

Headquarters

HQ city

Braunschweig

HQ country

Germany

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Software

Cost components

Personnel, Technology or R&D, Operations, Infrastructure, Marketing or Sales

Distribution channels2 records

Marketing channels4 records

Core offering

TLK-Thermo provides proprietary Modelica-based simulation software (nine products including TIL Suite, TILMedia Suite, ClaRa+, DaVE, TISC Suite, Simulator Suite, Optimization Suite, ModelFitter, and MoBA Automation) for the design, analysis, and optimization of thermal systems. Complementing the software, the company delivers engineering services spanning simulation, laboratory-based thermal measurements in a 1500 m² facility, custom software development, and structured training courses on Modelica, TIL, DaVE, vehicle air conditioning, and ClaRa+.

Product overview

TLK Thermo offers a platform-plus-modules architecture comprising nine distinct software products for physical modeling, simulation, visualization, automation, co-simulation, and model exchange of thermal systems. The core offerings include TIL Suite for thermal system modeling, TILMedia Suite for thermophysical property data, ClaRa+ for Clausius-Rankine cycle simulation, and DaVE for visualization. Additional modules include TISC Suite for multi-program coupling, Simulator Suite for model execution and evaluation, Optimization Suite for model-based optimization, ModelFitter for parameter fitting and experimental design, and MoBA Automation for workflow automation. The company also provides software development services and training courses on Modelica, TIL, DaVE, and ClaRa+.

Differentiator

Problem solved

Functional benefit

Brands

• TIL Suite: Modeling and Simulation of Thermal Systems
• TILMedia Suite
• ClaRa+
• DaVE
• TISC Suite
• Simulator Suite
• Optimization Suite
• ModelFitter
• MoBA Automation

Products and services

• TIL Suite Software for modeling, analyzing, and optimizing thermal systems and components using physical, Modelica-based simulation; targeted at engineers developing refrigeration, heat pump, HVAC, and other thermal systems.
• TILMedia Suite Software that provides thermophysical properties of substances used as input for thermal-system simulations; targeted at simulation engineers needing accurate fluid and material data.
• ClaRa+ Software for modeling and simulation of Clausius-Rankine power cycles; targeted at engineers designing power-generation and thermodynamic-cycle systems.
• DaVE Software for graphical visualization and analysis of thermal-system models and simulation results; targeted at thermal-systems engineers and analysts.
• TISC Suite Software that couples multiple simulation programs to enable co-simulation and model exchange across heterogeneous tools; targeted at engineers running multi-domain or multi-tool simulation workflows.
• Simulator Suite Software environment for executing simulation models and evaluating their results; targeted at engineers running parameter studies and analyses.
• Optimization Suite Software that performs model-based optimization of thermal-system designs and parameters; targeted at engineers seeking automated design optimization.
• ModelFitter Software for parameter fitting, model analysis, and design of experiments to calibrate thermal-system models against measured data; targeted at engineers correlating simulation with laboratory measurements.
• MoBA Automation Software for automating simulation workflows and batch processes; targeted at engineering teams seeking repeatable, automated simulation pipelines.
• Software Development Service Custom software development services for thermal-system simulation and related applications; targeted at customers needing bespoke modeling tools or extensions.
• Thermal Measurement Service Laboratory-based measurement of thermal-system components, complete systems, custom measurement setups, automated measurements, and hydrogen systems conducted in a 1500 m² modern laboratory; targeted at engineering teams needing validated test data.
• Training Courses Paid training courses covering Modelica, TIL, DaVE, vehicle air conditioning, and ClaRa+; targeted at engineering professionals adopting TLK-Thermo's software and modeling methods.

Segments6 records

Ideal customer profiles1 record

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature9 records

Partnerships

One partnership is on record.

• Sales PartnersminorChannel Partner/ Reseller/ DistributorInternational network of sales partners distributing TLK Thermo software and engineering services regionally

Scale indicators2 records

Recent moves6 records

Expansion highlights4 records

Broad incumbents

• Siemens Digital Industries Software: Siemens' Simcenter portfolio (including Amesim for 0D/1D thermal-fluid modeling) competes head-on with TLK's TIL/TISC suites in refrigeration, automotive thermal, and process engineering segments.
• Dassault Systèmes: Dassault's SIMULIA brand delivers multi-physics simulation including thermal and fluid systems modeling — a broad incumbent against TLK's narrower Modelica-based thermal stack.
• AVL List GmbH: AVL is a global mobility and powertrain engineering firm whose CRUISE/MACHINE and thermal-management simulation services directly intersect TLK's mobile AC and battery thermal segments.
• Ansys: Ansys is a global CAE leader whose Fluent, Mechanical, and Twin Builder products cover thermal, CFD, and 0D/1D simulation at enterprise scale — a broad incumbent competing with TLK across mobile, stationary, and battery thermal applications.
• Altair Engineering: Altair provides simulation tools (Activate, Flux, AcuSolve) spanning 0D/1D system modeling and CFD, overlapping with TLK's combined Modelica + CFD offering in thermal and energy systems.

Direct peers

• Claytex Services Ltd: Claytex is a UK-based Modelica specialist offering simulation libraries and services for vehicle thermal management and HVAC — a direct peer to TLK's mobile AC and stationary refrigeration offerings.
• ThermoAnalytics: ThermoAnalytics provides thermal simulation and modeling software (TAITherm) for automotive, aerospace, and electronics applications, directly overlapping with TLK's battery and mobile thermal management use cases.
• ITI GmbH (Simbec/SimulationX): ITI GmbH provides SimulationX, a Modelica-based multi-physics simulation platform, making it a direct peer to TLK's TIL Suite in the Modelica thermal-system simulation market.
• Modelon: Modelon provides Modelica-based simulation libraries and tools for thermal and energy systems (e.g., HeatPowerLibrary, AirConditioningLibrary) — directly competing with TLK's TIL Suite in stationary refrigeration, HVAC, and power cycle modeling.

Emerging players

• XRG Simulation (now part of Hexagon): XRG (now Hexagon) provides specialized simulation software for energy and process industries including thermal systems modeling, comparable in niche focus to TLK's process engineering and heat-transfer offerings.

Market position

Strengths5 records

Weaknesses4 records

Competitive moat5 records

Key risks5 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/tlk-thermo

Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about TLK Thermo