Linear Radiant Ceiling Panels

Zehnder Rittling Radiant Ceiling Panel offers the best of both worlds… advanced hydronic technology and the sleek, unobtrusive appearance of the ceiling design. 


Form, function, comfort and energy conservation are all engineered in an environmentally sound way to provide clean, efficient and reliable heating for a variety of applications. 

These highly efficient panels supply the heating requirements for a typical building while taking up as little as 12 to 24 inches of the perimeter ceiling plane. This innovative product affords not only the human comfort and efficiency long associated with radiant systems, but also unrestricted design freedom, outstanding aesthetics, space utility, flexibility, and economic feasibility.

The elimination of unsightly wall and floor-mounted units, by concealing the heating source in the ceiling, creates an unobstructed perimeter wall that allows unlimited creativity and flexibility in the interior design.

The Zehnder Rittling Linear Radiant Panels provide a narrow border around the ceiling perimeter that contrasts or compliments the most creative ceiling. They are effortlessly incorporated into a perimeter soffit drop or continuous window pocket.

The uniform, draftless heating and cooling provided by the system allows the total interior to be utilized, even at those locations where an occupant is seated adjacent to large areas of glass.

Re-allocation of space and occupant changes are easily accommodated when the open-office concept of floor-toceiling partitions are involved. Since the radiant panels can be furnished in lengths compatible with perimeter planning modules, layout changes can be easily implemented. Simply adjusting terminal connections and adding thermostatic controls accomplishes this. Sound transmission is a nonissue since the Zehnder Rittling radiant ceiling panels have a higher STC rating than most acoustical ceiling tiles.

It has long been recognized that radiant energy transfer is the most effective known method of transferring energy. Millions of square feet of radiant ceilings have been installed in various types of buildings, most notably office buildings, apartments, retail stores, hospitals, banks, churches, airports and schools. Today’s high fuel costs make the benefits of radiant systems economically advantageous for much broader applications, especially for office buildings.

Theory of Radiant Heating

Radiant energy is transmitted by electromagnetic waves that travel in straight lines, can be reflected, and heat solid objects but do not heat the air through which the energy is transmitted. All objects with a surface temperature above absolute zero transmit and absorb these waves in varying degrees depending on the body surface temperature. Every microscopic crevice of the surface absorbs and reradiates the heat to an adjacent, colder object. When examined under a microscope, a concrete surface shows a large number of crevices while polished steel or similar polished surface show no such crevices. Thus, a rough surface transmits radiant energy more efficiently than a polished surface. Unlike convection, which is actually a current of warmed air, radiant heat does not rise. The floor is kept as warm as all other absorbing objects in the room including the ceiling. The Zehnder Rittling radiant ceiling panels, when placed around the perimeter of the space, create a uniform, draft-free thermal barrier.



  • Hospitals
  • Office Buildings
  • Schools

Linear Radiant Ceiling Panels