Always where home is created.
With individual windows and doors, we strive to create spaces in which you feel safe and at home. For us, customer proximity is both a promise and our daily goal. Our team is always ready to be there from Aachen to Heinsberg to Düren to support you with competent service, tailor-made solutions and personal commitment.
Our windows and doors create your home.
Quality windows and doors from our own production
Sustainable window and door construction
Project planning on equal terms
Our most popular windows and doors
Made in Germany
Short distances to your home: We build our windows directly on site in our in-house production facilities. Tailored from the region.
Tested & certified
Our products and processes are regularly tested and certified by institutes so that you can rely on our windows and doors for a long time.
Sustainability
The longer windows are used, the better for the environment. We guarantee this by making old plastic windows durable and returning old plastic windows to the material cycle.
How to plan your project with ease
With all the decisions to be made, building or renovating a house can be nerve-wracking. But it doesn't have to be that way for you. We understand your concerns and help you plan: from the right time for your new dream window or door to design and installation planning.
Additional opening hours:
Do you have to see that live?
Then feel free to visit us in our exhibition. Discover lots of inspiration for your individual windows and doors. We're looking forward to seeing you.
Opening hours
Sat 09:00 - 13:00
Sun 14:00 - 17:00 (excluding advice and sales)
Personal advice may vary, by appointment
Craftman or dealer? Become our partner!
At KOCHS, we focus on long-term partnerships on equal terms. As a craft business or window retailer, you can rely on us for reliability, your personal contact and partnership-based advice. With KOCHS windows and front doors, you offer your customers the best quality. Please contact us for further information.
Get our renovation guide!
Renovate windows now! Your free guide says how. Over 90 pages full of information, inspiration and checklists.
Get our renovation guide!
Renovate windows now! Your free guide says how. Over 90 pages full of information, inspiration and checklists.
Optimum safety with KOCHS ProSafe
ProSafe — our burglary protection window. The main points of attack for burglaries are windows, terrace and balcony doors. With KOCHS ProSafe, you have a range of windows available that offers you safety, security and even more protection. And that individually according to your security requirements or your living environment.
Certified by
We value sustainability — in your home and in our production
We see sustainability as a holistic task and challenge. You can make an important contribution: If you opt for a modern thermally insulated window or door from KOCHS, you are making a significant contribution to minimizing CO2 and protecting the climate. You also save energy costs in the long term.
The longer our windows and materials stay in use, the better for the environment. That is why we are part of an industry-wide recycling initiative and ensure that old plastic windows are recycled. Because thanks to intelligent technologies, the processed plastics can be used for new windows — and without loss of quality.
We are looking for employees!
With around 300 employees, we are one of the most modern window production companies in Germany. Since 1955, we have been developing, producing and selling tailor-made windows, front doors and complete solutions in Germany, Belgium and the Netherlands.
We want to grow with you!
Windows and doors with tradition from the Aachen region
What began in 1955 as a traditional joinery business was successfully expanded into a state-of-the-art window production facility under Friedrich Kochs in the second generation. Today, managed by Daniel Kochs in the third generation, we are one of the top 10 German window and door manufacturers. We have always stood for reliability, craftsmanship and innovation, and in addition to our high-quality products and services, we offer personalised, individual and sustainable advice.
