What are the regulations in the model building regulations? On June 1, 2017, the German Institute for Building Technology (DIBt) published the draft version of…
What key figures are determined when testing heat pumps? Manufacturers are increasingly taking advantage of the benefits of combining controlled domestic ventilation appliances and heat…
Which key figures are determined according to DIBt LÜ-A 20? The old test program of the German Institute for Building Technology (DIBt), LÜ-A 20, includes…
Ruhr Nachrichten article about the Company Friday at TZWL, with a visit from the mayor of Schwerte.
TZWL from Schwerte publishes current list of domestic ventilation units with and without heat recovery.
TZWL moves to the headquarters of Schrezenmaier Kältetechnik in Schwerte to modernize its testing facilities
The European Test Centre for Residential Ventilation Units (TZWL) e. V. has built a new test stand for measuring ventilation units for leaks and modernized…
Over the past few years, the Dortmund weather station on the roof of our office building has been measuring temperature, wind speed, rainfall and other…
We would like to inform you that our company will be temporarily closed from March 13 to 17 due to our visit to ISH Frankfurt,…
Why do I need to ventilate? Ventilation is essential to remove unwanted airborne substances such as water vapor, pollutants, fine dust and odors. Ventilation for…