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Over 50 years of experience
In the development and production of components for building automation.


Control and regulation technology is our passion and has been for over 50 years. Developing and manufacturing high quality products is our goal. We offer a comprehensive portfolio of first-class, perfectly matching products, systems and solutions in the fields of HVAC, renewable energies, room and building automation and energy management.

High quality and flexibility as well as reliability and innovative spirit have always been the attributes that distinguish the owner-managed company TEM AG. Motivated employees develop unique solutions and the use of the latest manufacturing technologies guarantees a consistently high quality standard. This gives our customers the assurance of always receiving high-quality products.

Through decades of experience and comprehensive know-how, we have not only developed advanced products for our OEM customers, but also launched numerous own innovations on the market.


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Launch of the optimized Free Bus topology, which minimizes cabling and installation effort. Optimal for use in larger automation projects. The maximum cable length is 500 meters with 50 nodes (FT modules).



With its know-how TEM AG has developed a leading system in the smart home area. The myTEM SmartHome solution has some outstanding advantages:

  • Arbitrary scalability from starter set to the professional installations

  • Open Z-Wave radio standard and combinability with other products

  • Protected privacy with cloud-free operation

The myTEM SmartHome system can be controlled and programmed via a smartphone app or the extensive myTEM ProgTool Software.





The TEM Group takes over Elesta Energy Control AG in Bad Ragaz (CH). With this step, the know-how of the TEM Group in the field of heat pumps can be expanded. Additional products and markets were also taken over.


TEM AG has expanded the range with Controlesta. This system is used to control and regulate entire buildings. Building automation is becoming increasingly important.

The freely programmable Controlesta series offers a wide range of integration and communication options such as BACnet Ethernet, IP, MS/TP and PTP. In addition, Modbus, M-Bus, Wilo, Grundfos, RCO-C, ASCII, TCP/IP are supported.


The systems of TEM AG are connected to the internet. In this way, the data on the operating status can be retrieved from a service center.

From 2010, the TEM devices can be operated via smartphone.



TEM AG offers the market an extensive range of system controllers for HVAC with bus communication, regulation and control electronics and software for the operation of oil, gas, wood and pellet heating systems, heat pumps and solar systems.



The applications are becoming more and more complex and the requirements more diverse. TEM AG introduces control and regulation devices with bus communication.

This allows the devices to communicate with each other and the system can be optimally designed.



The use of microprocessor-controlled systems results in a range of control devices for controlling and optimizing heating, ventilation and air-conditioning systems.

The products of TEM AG are used in HVAC throughout Europe.



Triggered by the oil crisis, TEM AG also developed a modular series of devices for controlling and regulating solar collectors, heat pumps and warm air circulation fireplaces.



After the company was founded in 1967, TEM AG produced control and monitoring devices for oil boilers. The range was then expanded to include control and regulation devices for the entire heating system.

The first outside temperature and room temperature dependent heating controllers are created.

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