• Our 2000th church heating...
    ...and our team of 1936
  • MAHR company building since 1966
  • MAHR fleet 2014
  • Aachen Cathedral
    ... equipped with a MAHR church heating since 1912

Our specialization

Heating churches


Specialized Constructions

Service Small Devices

Always there for you

Welcome to our homepage.
Theod. MAHR Söhne GmbH with its 165 employees is one of the best-performing enterprises in the field of heating, airconditioning and ventilation in North Rhine-Westphalia.

more about us »

Our greatest strength lies in the long-term orientation of our family business, which is now led in the sixth consecutive generation. This is living sustainability, to the benefit of employees and customers.

more about us »

Doing business doesn´t mean keeping your eyes exclusively on figures like capital ratio or EBIT. Commitment means personal involvement, donating, taking responsibility.

more about our commitment »