Information Portal Domestic Ventilation

Test Center

European Testing Center for Domestic Ventilation Systems (TZWL), NPO


Ernst-Mehlich-Str. 4a Dortmund Nordrhein-Westfalen 44141 Germany

+49(0)231 / 53477 - 0

+49(0)231 / 53477 - 109

Contact Form

Send an email. All fields with an * are required.

Other information

TZWL will be on hand with help and advise for any questions regarding our services. Contact us via telephone or email using the email-form at the bottom or your personal email-program with our email adress.