Professionalism and friendliness
fast turnaround on time, even at short notice
We'll be happy to advise you and carry out the necessary formalities for you.
The company was founded in 1984 by Mr Jos Grethen in Waldbredimus.
Reliability, high-quality craftsmanship, punctuality and clean work are the hallmarks of the company.
Grethen Jos Sàrl was founded in 2007.
With over 35 years' experience, the company boasts a large and loyal private customer base. The company's scope of activity extends to all heating and sanitary installations, the installation of ventilation systems, descaling installations, new builds, renovations, minor repairs, as well as maintenance and solar panel installation services.
Planning and personal advice are provided directly by the management.
With us, you get everything from a single source - the master's hand
