ZEHNDER Terraline duct heater with natural convection UN-11-21/2200mm, heating capacity: 812W, grille to be ordered separately UN 11-21/ 2200/ ALUM.NAT

Channel Heaters – Discreet Comfort and Efficient Heating

Zehnder Terraline channel heaters are the ideal solution for those who value aesthetics and functionality. This heating system, hidden beneath a frame and grille, seamlessly integrates into interior design while ensuring efficient heat distribution. The UN-11-21/2200mm model, with a power output of 812W, is perfect for spaces requiring precise and uniform heating.

Terraline heaters utilize natural air convection, resulting in silent operation and the absence of unnecessary noise. They are especially recommended for rooms with large glazing, where they create an invisible air curtain that minimizes heat loss, ensuring thermal comfort even on colder days.

Construction and Application

The heater’s construction is based on a robust steel casing coated with a durable powder finish. The heat exchanger, made from a copper-aluminum (Cu-Al) combination, guarantees high thermal efficiency. Note that since 2020, the grille must be purchased separately, allowing customization to match individual stylistic preferences. Available grilles include aluminum (coiled or linear), wooden, and stainless steel options.

Zehnder Terraline channel heaters are suitable for both residential and commercial buildings — offices, shops, and hotels alike. They perform excellently wherever a discreet, high-performance heating system is required. The ability to connect multiple heaters into a single continuous run enables flexible adaptation to the specific needs of each space.

Benefits and Features

• High Heating Efficiency: The Cu-Al heat exchanger ensures rapid and even heat distribution throughout the room.
• Silent Operation: Natural convection eliminates noise associated with fan-driven systems.
• Aesthetic Design: The hidden heating system leaves visible only a sleek frame and a chosen decorative grille.
• Flexible Installation: Heaters can be connected into longer runs and custom-made to specific dimensions.
• Durability and Reliability: High-quality materials ensure long-term, trouble-free use.
• Wide Grille Selection: Allows perfect matching of the heater’s appearance to interior style (grilles available separately).
• Safety: Maximum operating pressure of 10 bar and operating temperature of 110°C — standard parameters for central heating systems.
• Versatility: Supply and return connections available on both sides simplify integration with existing installations.
• Adaptability to Diverse Needs: Available in various lengths (including intermediate sizes) and optional corner or curved elements.

The Terraline UN-11-21/2200mm heater is an investment in thermal comfort and aesthetic elegance for your interior. Its discreet design ensures perfect integration into modern interiors, while its high build quality guarantees reliable, maintenance-free operation for many years.