W3 Smart  W3 Smart is the lowest ventilation unit in the market and the quietest in terms of size. The device, with module dimensions (597 x 599 x 446 mm), is a solution for homes with an area less than 150 m² (80 l/s, 288 m³/h), and can be installed above the washing machine, freeing up space. W3 Smart is also available as a 740 W low energy model, whose low total power reduces building costs.

Standard preheaters and smart compensation features ensure continuous ventilation operation and do not cause unnecessary negative pressure on cold winter days. Standard equipment also includes the market's smartest demand-controlled humidity automation.

  • Ecodesign energy class A*
  • Air flow range 36 – 288 m³/h
  • Temperature efficiency up to 82 % (EN 13141-7)
  • Demand-controlled humidity function as standard
  • Automatic summer function and passive cooling
  • Anti-frost protection ensures continuous ventilation
  • External coils for heating and cooling as an option
  • Can be connect to the automated building management system (I/O / Modbus)
  • Low installation height for installation above laundry columns
  • Control System CASA Smart

Energy classification according to the EcoDesign Directive Lot 6. The energy class may vary depending on the chosen accessories.


CASA Smart air treatment units are equipped with the most versatile control options on the market! Choose your preferred method of control or combine several!

  • Smart control panel
  • Smart Access for mobile connection
  • CASA Smart cooker hoods (connected with a separate duct)
  • Centralised building automation (with SEM Modbus module or configurable I/O).