Hot water heating

Hydronic Cabinet Unit Heater

Zehnder Rittling aero convector are recognized in the market as the quietest in the industry. Available with a hot water coil or steam coil, these forced air heating units are perfect for heating halls in schools, hospitals and office towers. They are available in a wide range of air models and diffusions.


  • Robust construction with 16 gauge cabinet
  • Available in a wide range of colors
  • 3-speed serial controller
  • High efficiency coil, 1 row or 2 rows
  • Available with steam coil
  • Always in inventory



RF/RFI- Aero convector, floor installation with a flat top

RS/RSI- Aero convector, floor installation

RW/RWI- Surface aero convector, wall installation

RRW/RRWI- Fully built-in aero convector in the wall

RFRW/RFRWI- Semi-recessed aero convector in the wall

RC- Surface aero convector ceiling installation

RFRC- Fully recessed ceiling aero convector

RRC- Semi-recessed ceiling aero convector

Air heater with hot water and steam in stock and available at all times!

Rittling vertical or horizontal fan heaters provide uniform heating on which you can rely in large open spaces such as factories, garages and warehouses. Our high efficiency units offer low installation costs and high heat loads.