G-Therm Haustechnik Heizung & Sanitär Fachbetrieb

Efficient and well done service, fast service and friendly staff

In Castrop-Rauxel, our old oil heating system was professionally decommissioned and dismantled. The switch to a modern gas condensing boiler was completed in a single day. The work was carried out very cleanly, reliably, and professionally, and the advice was expert. We are very satisfied with the new heating system and wholeheartedly recommend G-Therm Haustechnik in Castrop-Rauxel and the surrounding area.

Unbeatable value for money, customer-oriented and friendly. I'm very satisfied and can recommend the company without hesitation. Complete installation of the boiler (Buderus Lugano plus) Quick and straightforward.

Our heating system broke down in winter. We received immediate and very prompt assistance, along with expert advice. The old gas boiler was professionally dismantled and replaced with a new gas condensing boiler. The work was very clean and reliable. We are very satisfied with G-Therm Haustechnik and would gladly recommend them.

I am extremely impressed with the excellent and thorough maintenance of my Wolf gas heating system by G-Thermhaustechnik. Even on Christmas Eve, they didn't leave me stranded when the heating suddenly failed. The technicians were very punctual, friendly, and knowledgeable. The price was very fair! Now I can finally relax, as all the problems have been resolved. I thank the technicians and Mr. Güldes from the bottom of my heart! I highly recommend them! Thank you very much and Merry Christmas.