Monitors in real time how cold outside air warms up in the window interspace thanks to the Air-In® Chameleon valve.
See also the result charts:
Monitoring of heat recovery, November 2010 – February 2011Results for November 2010 – February 2010, maximum difference between outdoor temperature and inblow 20.5°C
Monitoring of heat recovery, December 2009 – March 2010Results for December 2009 – March 2010, maximum difference between outdoor temperature and inblow 19.8°C