The advantages of extremeline products

ExtremeLine is one of the leading manufacturers of infrared heaters, of LEDs, sliding roof windows and has many advantages for use. Learn more about us now and why you should choose ExtremeLine products. In order to provide you with the best possible information, we have compiled some interesting facts about heating, ventilation and lighting.

Our new catalog 2023

Now the time has come! Our new catalog is here. Here you can find not only the HeatFlare but also a lot more. Take a look and let yourself be inspired.

You do need a printed version, don’t you? No problem! Of course you can always ask us for one, or more new catalog!


We bring light, air and warmth to open and closed areas, making them a place of well-being at all times! Our focus is on the combination of design, energy efficiency and user-friendliness. With in-house development and manufacturing in Halfing (Upper Bavaria), we produce high-quality ExtremeLine products “Made in Germany”.



A passionate product developer with a high degree of inventiveness, that’s Reinhold Kalteis, founder and senior boss of S.E. System Electronic GmbH. The infrared radiant heater success story began in 2009, when Reinhold Kalteis had the idea of developing infrared radiant heaters by chance. A business partner wanted to import radiant heaters from abroad to Germany and sell them there. However, these showed considerable deficiencies. Since his interest was already at that time the electric heaters and the associated effective heat source, it was quickly decided to produce its own high-quality product. With his many years of experience in the development of high-quality products, the trained electronics engineer knows what matters when it comes to heat.


Whether it’s infrared radiant heaters, super quiet sliding skylights or optimized lighting solutions, our products will extend the useful life of your favorite place and save you money too. Take a look and let us convince you. We will be happy to advise you!


Start your digital tour now and get to know our innovative Brand Spaces. Here you have the opportunity to explore new perspectives, discover our products and in this way independently explore the ExtremeLine product world. To the virtual world go this way.


The company S.E. System Electronic GmbH develops and produces electronic and mechanical components and products. For this purpose, the company has its own electronic development, but also technically different processing methods such as water jet cutting, 3D printer, prototyping, tooling or milling, which we also offer as a service.