News & insights
Shutdown of the Dortmund weather station
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…
TZWL focuses on continuity at general meeting
TZWL held its general meeting on May 22 at its new premises in Schwerte.
TZWL focuses on continuity at general meeting
TZWL held its general meeting on May 22 at its new premises in Schwerte.
TZWL focuses on continuity at general meeting
TZWL held its general meeting on May 22 at its new premises in Schwerte.
What are the regulations for domestic ventilation in the model building regulations?
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?
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…
What key figures are determined during the DIBt Lü-A 20 test?
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…
Company Friday at the TZWL
Ruhr Nachrichten article about the Company Friday at TZWL, with a visit from the mayor of Schwerte.
First eBulletin – list of domestic ventilation units – of the year 2024 published
TZWL from Schwerte publishes current list of domestic ventilation units with and without heat recovery.
TZWL begins relocation to modern facilities in Schwerte
TZWL moves to the headquarters of Schrezenmaier Kältetechnik in Schwerte to modernize its testing facilities
12th Residential Ventilation Forum – HEA and the Federal Environment Agency invite to a joint expert forum
12th Residential Ventilation Forum – The joint expert forum of the HEA and the Federal Environment Agency on November 21, 2023 will focus on the…
TZWL renews its test benches with the help of progres.NRW funding
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…
Shutdown of the Dortmund weather station
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…
TZWL visits the ISH Frankfurt
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?
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…
Why do I need a domestic ventilation system?
Why do I need a domestic ventilation system? The use of a domestic ventilation system with heat recovery ensures fresh and healthy indoor air and…
How expensive is a domestic ventilation system?
How expensive is a domestic ventilation system? A ventilation unit costs between €800 and €8,000, depending on performance and efficiency. In addition, depending on the…
When does a home ventilation system pay off?
When does a home ventilation system pay off? As a rule, a ventilation system has a minimum service life of 20 years and pays for…
What maintenance must be carried out on a domestic ventilation system?
How do I maintain a domestic ventilation system? A domestic ventilation system should be adjusted, maintained and cleaned at least once a year by yourself…
What directives does the EU issue for domestic ventilation?
What directives does the EU issue for domestic ventilation? With the EcoDesign Directive, the European Union sets standards for the energy efficiency of domestic ventilation…
What are the current rules according to the EU EcoDesign Directive?
What rules does the EU EcoDesign Directive lay down? Since 2016, the EU has been regulating the basic requirements for domestic ventilation units in its…
How does NRW implement the model building regulations with regard to home ventilation?
How does NRW implement the model building regulations? The updated state building regulations for the state of North Rhine-Westphalia, BauO NRW, were published at the…
What appliance classes are there for domestic ventilation appliances?
What classes are there for ventilation units? There are a variety of systems for controlled domestic ventilation. These include pure supply or exhaust air systems…
Which key figures are determined during tests in accordance with EN 13141 and DIBt LÜ-A 21?
Which key figures are determined according to EN 13141 / DIBt LÜ-A 21? The European test standard EN 13141 provides specifications for testing the tightness,…
What key figures are determined during PHI tests of domestic ventilation units?
Which key figures are determined according to PHI? The Passive House Institute has its own specifications for testing controlled domestic ventilation units, which form the…
Example contribution with subsidies navigation on the left
Promotion of domestic ventilation in NRW continues in 2021 Ventilation is essential to remove unwanted airborne substances such as water vapor, pollutants, fine dust and…
New test stand for carrying out ventilation measurements
The reorganization process decided by the members has begun with the help of funding from progres.nrw TZWL entered the business field of testing (residential) ventilation…
Air hygiene tests for domestic ventilation units
The cooperation between TZWL and DMT enables manufacturers of ventilation units to commission air hygiene tests via TZWL. Dr. Dirk Renschen, Head of Product Testing…
Open letter: Model Administrative Regulation Technical Building Regulations
On June 1, 2017, the >> German Institute for Building Technology (DIBt) published the draft version of the updated >> Model Administrative Regulation for Technical…
Dr. Meinolf Gringel is Vice President of the ZVKKW
At its Annual General Meeting on 16 May 2017, the German Refrigeration, Air Conditioning and Heat Pump Association (ZVKKW) elected TZWL CEO Dr. Meinolf Gringel…