W4 Smart xs

A small giant among ventilation units
W4 Smart xs is the lowest ventilation unit on the market and the quietest for its size. The unit with modular measurements (597 x 599 x 446 mm) is the answer for home less than 200 m² (100 l/s, 360 m³/h), and can be installed above a washing tower and leaves plenty of space for e.g. a folding rack. A preheater as standard and smart compensation functions ensure the  ventilation works continuously and does not cause unnecessary negative pressure on cold winter days. It also features the market’s smartest demand controlled humidity automation as standard. 
  • Ecodesign energy class A*
  • Air flow range 36 - 360 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 EcoDesign directive Lot 6. Energy class may vary depending on the selected accessories.

Controls (options)

CASA Smart ventilation units are equipped with the market’s most versatile control options! Select the required control method or combine several!

Download documents

You can find more documents on our document search page. Looking for older versions, you can find them in the document archive

Comprehensive detailed product information for the best selection and integration in project design
Installation, Operating, Maintenance and Safety information
Our products and services presented in an easy-to-access manner
Declarations and certificates etc
Wiring diagrams and hydraulic schemes etc
Document Article Document type Date Download
Residential AHU overview (pdf 8.54MB) Swegon CASA Brochure 14/10/2022
Product leaflet (pdf 7.12MB) CASA W4 Smart xs Technical catalogue 13/10/2022
Resident quick guide (pdf 393.08kB) CASA Smart panel IOM Manual 20/04/2021
Instructions for filter replacement in ventilation units (pdf 314.43kB) CASA Smart IOM Manual 10/05/2021
Instructions for use (pdf 11.18MB) CASA W3/W4 IOM Manual 15/01/2021
Technical manual (pdf 4.71MB) CASA W3/W4 xs IOM Manual 30/01/2023
Technical manual (pdf 3.87MB) Swegon CASA W4 Smart Econo IOM Manual 17/05/2019
Ceiling mounting frame installation instruction (pdf 3.27MB) CASA W3/W4 IOM Manual 09/03/2023
A water trap (pdf 468.89kB) Swegon CASA IOM Manual 30/03/2020
Declaration of conformity (pdf 119.92kB) Swegon CASA Quality 19/04/2023
Product fiche Ecodesign (pdf 134.78kB) CASA W-units Others 21/06/2021
Ecodesign (pdf 581.16kB) W4 Smart xs Quality 14/07/2021
Ecodesign (pdf 579.85kB) CASA W4 Smart Econo Quality 15/07/2021
Smart functions (pdf 3.83MB) CASA Smart Brochure 24/05/2018
BVD (pdf 151.42kB) CASA W4 xs Technical catalogue 23/11/2020
Dis-assembly instructions (pdf 1.06MB) CASA W3/W4 Smart Others 04/06/2020

Whilst we have made every effort to ensure information on this website is up to date and accurate, the technical specification and availability of products/services listed on this website may vary market to market and are subject to change without notice. Please contact your regional representative or visit your local website for further details.