The advantages of extremeline products
ExtremeLine is one of the leading manufacturers of infrared radiant heaters, LEDs, sliding roof windows and now also a downpipe system and has many advantages for use. Find out more about us now and why you should choose ExtremeLine products. In order to provide you with the best possible information, we have compiled interesting facts about heating, ventilation and lighting here.
Our new 2026 catalog
Now the time has come! Our new catalog is here. Here you will not only find the AquaTube but much more. Take a look and be inspired.
You need a printed version, don’t you? No problem! Of course you can always ask us for one or more new catalogs!
OUR PRODUCTS
We bring light, air and warmth into open and closed areas, making them a feel-good place at all times! Our focus is on the combination of design, energy efficiency and user-friendliness. With our in-house development and production facilities in Halfing (Upper Bavaria), we produce high-quality ExtremeLine products “Made in Germany”.
THE POSSIBLE APPLICATIONS
Our ExtremeLine products – perfect for a wide range of applications. The possible applications here are not only in the patio, winter and summer garden areas, but in many more. Let yourself be inspired here and experience how and where our innovative products can be used!
SERVICE
WHO WE ARE
Reinhold Kalteis, founder of S.E. System Electronic GmbH, is a passionate product developer with a high degree of inventiveness. 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.
Now, with over 30 of their own products and after sixteen years, Robert and Christian Kalteis have taken over the management of the company. With their many years of experience in the development of high-quality products, they know what is important when it comes to heat, air and light.
OUR PRODUCTS
Whether infrared radiant heaters, super-quiet sliding roof windows or optimized lighting solutions, with our products you can extend the period of use of your favourite place and also save money. Take a look and see for yourself. We would be happy to advise you!
ONLINE EXPERIENCE.EXTREMELINE
Start your digital Erleben.ExtremeLine.de tour now and get to know our innovative brand spaces. Here you have the opportunity to explore new perspectives, discover our products and explore the ExtremeLine product world on your own. Click here to go to the virtual world of Erleben.ExtremeLine.de.
DO YOU NEED SPECIAL PARTS?
S.E. System Electronic GmbH develops and produces electronic and mechanical components and products using ExtremeLine services. For this purpose, the company has its own electronic development department, as well as various technical processing methods such as water jet cutting, 3D printing, prototype construction, toolmaking or CNC milling, which we also offer as a service or contract manufacturing.
NEWS
News June 2026
SUMMER IS UMBRELLA SEASON! New mounting bracket for infrared heaters on umbrellas
With our newly developed umbrella mounting bracket, we offer a practical and flexible solution for attaching infrared heaters—such as the HeatFlare—to large umbrellas. Thanks to its well-thought-out design, installation is quick, easy, and straightforward. Learn more about this exciting news in our news article.
