Schmitz, Marc GmbH
Cologne-based HVAC firm specialising in heat pump installation and air conditioning for residential customers.
What customers love
- Heat pump and air conditioning installations completed on schedule
- Technicians leave the worksite clean and in good condition
- Knowledgeable guidance on subsidies and system options
Best for
Homeowners in Cologne replacing gas heating with a heat pump or air conditioning.
Attribute scores
Recent reviews
I'm very satisfied with Marc Schmitz! I barely called, and we had an on-site appointment just two days later. The consultation was competent and very helpful. I was particularly impressed by his excellent availability – I could always reach someone and get my questions answered (including those about subsidies, etc.). The installation of the air conditioning units was carried out professionally and cleanly. Everything went smoothly and reliably. Overall, a fantastic service – I can definitely recommend this company!
The installation of a heat pump after the removal of the old gas heating system in spring 2026 was completed on time, professionally, and after thorough prior consultation. The employees of the various trades involved from Marc Schmitz GmbH were friendly and worked well together, which greatly benefited the completion of the entire project. The construction site was left in perfect condition. I highly recommend them.
In January 2026, we had a heat pump installed by Marc Schmitz. The existing natural gas boiler in the attic was removed. Consultation, installation, and commissioning went completely smoothly. Our technician, Mr. Kösem, and his team set up the system in the basement in three days. We are very satisfied with the result. The Vaillant Arotherm Plus has been running perfectly ever since.
We had an air conditioning system installed by the company Marc Schmitz. An employee came out, inspected everything, and gave us a quote. A week later, the air conditioner was installed, and everything was completed in a day and a half. Any minor issues were resolved quickly and courteously. If the system lives up to its promises, we will be very satisfied with the company's service and value for money.
The repair work on our heating system was truly outstanding, thanks to the excellent work done by Marc Schmitz. The consultation was fair, as was the cost calculation. Despite the generally challenging times, the spare parts were procured quickly and expertly installed. We are completely satisfied with their service.