Alexander Kolzem Sanitär & Heizung

The employee did a fantastic job! Mr. Alex was very courteous and knew what he was doing! It was about the underfloor heating! It's always good to have someone with expertise in your company, and he certainly is. He explained everything so clearly that even I, as a layperson, understood it all. Communication 10/10⭐ Professional Work 10/10⭐ Expertise 10/10⭐ Punctuality 10/10⭐

I had a broken seal in my bathroom. My landlord hired Kolzem, and they sent Ms. Bramer over. I was very satisfied with her work! Ms. Bramer was very friendly, took a close look at everything, and carried out the repairs carefully and neatly. You could tell she really knows her stuff. Excellent work!

Kolzem recently installed a new gas boiler for me because my old one, after thirty-eight years, had finally given up the ghost. I'd never dealt with Kolzem before (we live over an hour's drive apart). From the initial inquiry to completion, it was just one week. The price was good, they kept to the schedule, the installers were very pleasant and friendly, and: the system works! For me, as the client, these are the essential points that define good workmanship. Many thanks to everyone involved!

❗ Beware of this company ❗ This company issues invoices that are in no way comprehensible or justified. When asked how certain amounts were calculated, they offer no explanation. Instead, they claim to have worked for several hours, even though they were only on-site for a few minutes. Particularly concerning: Work that should have been covered under warranty (since the fault has existed since the system was first installed) was simply billed. Inquiries went unanswered; instead, a letter from a lawyer demanding payment of the invoice arrived immediately. My conclusion: The so-called "servic

Excellent work as always! Ms. Bramer and Mr. Kemahl were competent, dedicated, creative, and accommodating. Thank you very much!