ZEHNDER Terraline channel radiator with natural convection UN-11-21/1200mm, heating capacity: 373W, grille to be ordered separately UN 11-21/ 1200/ ALUM.NAT

Zehnder Terraline Channel Heaters – Discreet Thermal Comfort

The Zehnder Terraline channel heater is the ideal solution for those who value aesthetics and efficiency. Thanks to its design, the unit combines heating functionality with seamless integration into the space. Zehnder Terraline performs exceptionally well in rooms with large glazing, creating an invisible air curtain that minimizes heat loss. The construction, based on a Cu-Al (copper and aluminum) heat exchanger, ensures rapid and even heat distribution throughout the room.

The heater consists of a durable steel housing coated with powder paint and a heat exchanger. Note that since April 2020, the decorative grille has been sold as a separate accessory, allowing customization to match individual interior styles. This enables selection of a grille in preferred material and appearance: aluminum, wood, or stainless steel.

Construction and Application

Terraline heaters are characterized by simple installation and operation. They can be mounted under windows, along walls, or in the floor, offering great design flexibility. A wide range of available lengths (from 800 mm to 4800 mm) and the possibility of connecting multiple units into a single continuous run allow perfect adaptation to any room. Additionally, custom sizes or cutouts for columns or partition walls can be manufactured.

Zehnder Terraline is not only a heating device but also a decorative element. After installation, only the aluminum frame and the chosen grille—either curved or linear—remain visible, giving the interior a modern, minimalist character. The unit operates quietly and efficiently, providing thermal comfort without disturbing household peace. Maximum operating pressure is 10 bar, and operating temperature is 110°C.

Advantages and Benefits

• Discreet design: The heater virtually blends into its surroundings, leaving only the frame and decorative grille visible.
• Heating efficiency: The Cu-Al heat exchanger ensures rapid heating and uniform heat distribution.
• Versatility: Flexible mounting options and customizable lengths to suit user needs.
• User comfort: Silent operation ensures thermal comfort without disruption.
• Wide grille selection: Choose from aluminum, wood, or stainless steel grilles to match interior style.
• Durability: High-quality materials (steel housing and copper-aluminum heat exchanger) guarantee long service life.
• Integration capability: Compatible with Zehnder air distribution systems.