Tested: Can I turn solid soap into liquid soap?
Guide
by Stefanie Lechthaler
Room climate
Best selling Fans
Best selling
Quiet, economical, effective: the Renew from Airthings keeps the air clean
Product test
by Martin Jungfer
Cleaning makes you happy - at least according to a study
News + Trends
by Stephan Lamprecht
Why we sell air conditioning systems with climate-damaging refrigerant
Background information
by Simon Balissat
