Welche Fenstersysteme bietet KOCHS an?

KOCHS bietet verschiedene Fenstersysteme für Neubau, Sanierung und Renovierung an. Details finden Sie in unserer Ausstellung.

Sind individuelle Maße und Designs möglich?

Ja, KOCHS bietet individuelle Maße und Designs an. Vereinbaren Sie eine persönliche Beratung für Details.

Wie energieeffizient sind KOCHS-Fenster?

KOCHS-Fenster erreichen Uw-Werte bis 0,76 und erfüllen die Anforderungen der EnEV 2014 und folgender Standards. Sie sind förderfähig nach KfW und BEG.

Bietet KOCHS einbruchhemmende Fenster an?

Ja, KOCHS bietet einbruchhemmende Fenster an. Fordern Sie ein kostenloses Angebot an für Details.

Wie lange beträgt die Lieferzeit?

Die Lieferzeit variiert je nach Projekt. Kontaktieren Sie uns für eine genaue Auskunft.

Gibt es einen Montageservice?

Ja, KOCHS bietet einen professionellen Montageservice durch Fachpersonal an, inklusive Demontage und Entsorgung bei Bedarf.

Bietet KOCHS Förderberatung an?

Ja, KOCHS bietet Fördermittelberatung für staatliche Programme wie KfW und BEG an.

Wie lange ist die Garantiezeit?

KOCHS bietet 4 Jahre Herstellergarantie bei fachgerechter Montage und Pflege. Für Komponenten gelten ggf. erweiterte Bedingungen.

Wie pflege ich KOCHS-Fenster richtig?

KOCHS-Fenster reinigen Sie einfach mit mildem Reinigungsmittel. Regelmäßige Wartung von Dichtungen und Beschlägen sorgt für Langlebigkeit. Eine Pflegeanleitung liegt bei jedem Produkt bei.

Wie kann ich KOCHS-Fenster beziehen?

KOCHS-Fenster können Sie über unsere Ausstellung in Herzogenrath oder für Geschäftskunden über unsere spezialisierte Landingpage beziehen.

Warum sind Kunststofffenster (PVC) nachhaltiger als Holzfenster?

Kunststofffenster aus PVC sind recyclebar und werden unter strengen Umweltauflagen gefertigt, was zu ihrer Nachhaltigkeit beiträgt.

Moderne Einfamilienhäuser mit rechteckigen Fenstern und grünen Büschen im Vordergrund.

Bring a lasting breath of fresh air into your home

Discover windows that combine sustainability and efficiency. Triple glazing and 6-chamber system provide strong insulation, slim frames let in more light. In this way, you save energy, protect the environment and gain long-lasting quality for new buildings, renovations and renovations.

Weißer Fensterrahmen mit klarem Glas, durch das ein verschwommener Tisch mit Stühlen und eine Hängeleuchte sichtbar sind.

Eligibility

Our energy-saving windows meet the requirements of government funding programs such as KfW and BEG. In this way, you reduce energy costs and can take advantage of additional financial support when replacing them.

Nahaufnahme eines weißen Schranktürgriffs mit verschwommenem Hintergrund einer Pflanze.

efficiency

With Uw values of up to 0.76 for EnEV 2014 and beyond, our windows are among the most efficient on the market. You save on energy costs, increase property value and benefit from your investment month after month.

Nahaufnahme einer weißen Fensterrahmenecke mit unscharfem Haus und grünen Büschen im Hintergrund.

Sustainability

Our window profiles are made from recyclable PVC or durable aluminum and are manufactured under strict environmental regulations. In this way, you invest in quality and at the same time make an active contribution to greater sustainability.

Weißes Fenster mit Glas, das einen unscharfen Blick auf einen Garten mit Büschen und Rasen zeigt.

Thermal insulation

Our energy-saving windows combine highly insulating profiles with modern triple glazing and thermally separated spacers. In this way, you can reduce heat loss, avoid drafts and enjoy more comfort in winter.

“I would like to thank KOCHS for the outstanding work that KOCHS has done for us. From planning to installation, everything went perfectly. The preparation was great and the execution flawless. Special praise goes to the assembly team: They were highly competent, very friendly and helpful. This professionalism is truly remarkable. ”

David Wilms

Aachen, 14.10.2025

“We came across KOCHS through recommendations and were not disappointed. We received very good advice from the very first contact. The measurement of the door, the discussion of the details and the assembly took place quickly, professionally and very friendly. We are very satisfied and can only recommend KOCHS.”

Jens und Sabine Beyer

Kreuzau, 10.08.2025

“We are more than satisfied with the production of the window and the new front door. The two fitters are also satisfied. ”

Beate Albrecht

Alsdorf, 05.08.2025

“When we urgently needed a patio door, KOCHS were the only ones who had appointments at short notice. The good communication before and during execution as well as the punctuality and reliability of the assembly team were particularly positive. The new sliding door is visually appealing and has already had a noticeable effect on thermal insulation and sound insulation. ”

Derya Demirtas

Baesweiler, 03.07.2025

“We were very satisfied from the first discussion about measures and completion — all deadlines were met on time and work was carried out perfectly. Top performance!”

Mirja Heidemann

Alsdorf, 12.01.2024

“From planning to execution, everything was precisely planned, prepared and executed.
The customer advisor, the fitters and the administrative staff are very friendly and customer-oriented. The front door was changed promptly, without complaint and, above all, professionally. ”

Bernd Korall

Herzogenrath, 11.06.2024

“The scheduling was great. Delivery and installation simply super professional. Thank you and always happy!”

Friedhelm Schmitz

Stolberg dispute, 10.01.2024

Drei Fensterrahmen in Schwarz, Grau und Weiß mit den Beschriftungen Design Themenwelt, Sicherheit Themenwelt und Effizienz Themenwelt.

Thematic areas

Find the right KOCHS window for  your home

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Whether stylish design, reliable safety or environmentally friendly efficiency, every cooking theme shows what a window can do. They all combine the highest quality, durable materials and innovative technology for a home that suits you.

Learn more

Your next steps with KOCHS

Ein Paar sitzt auf einem Holzboden und schaut sich Farbmuster und Inneneinrichtungszeitschriften an. Auf einem der Muster steht ein kleiner Hund.

Step 1

Consultation and initial measurement

In an initial consultation, we will discuss your wishes. It is ideal to have a consultation with your personal contact at your site in order to make an initial measurement directly.

Ein Mann und eine Frau sitzen an einem Tisch und unterhalten sich. Die Frau hält einen Stift in der Hand und schreibt in ein Notizbuch. Im Vordergrund ist ein Laptop zu sehen.

Step 2

Selection of windows and doors

After measurement and initial consultation, it's time to get down to the details. You select the windows and doors of your choice and we individually adapt the style, functionality and energy efficiency.

Eine Person verwendet ein Maßband, um die Breite eines weißen Fensterrahmens zu bestimmen.

Step 3

Preparation of offers with a fixed price

If everything is perfectly configured for your home, you will receive your individual offer — transparently, without hidden additional costs. With the KOCHS price guarantee, this price is fixed.

Frau mit Brille und Headset sitzt an einem Schreibtisch und tippt auf einer Tastatur vor einem Computer.

Step 4

Production and assembly

We manufacture your windows and doors according to your specifications. Installation is carried out quickly, cleanly and on time by our specialist staff — including disassembly and disposal if required.

FAQs

Which window systems does KOCHS offer?

KOCHS produces high-quality plastic windows and aluminum windows with a modern design, excellent thermal insulation values, a high level of safety and durability. Ideal for new construction, renovation or renovation. Discover our systems in our exposition.

Are individual dimensions and designs possible?

Yes, all KOCH windows are custom-made in Herzogenrath. Choose from countless colors, shapes, glazing and handles — perfectly tailored to your style. Contact us for a personal advice.

How energy efficient are KOCH windows?

Our energy-efficient windows meet passive house standards and achieve top Uw values. This reduces heating costs and CO₂ emissions. Find out more about our sustainable solutions.

Does KOCHS offer burglar-resistant windows?

Safety is the focus: Our windows with burglary protection, safety glazing, mushroom head lock and lockable handles effectively protect your home. Get a free offer.

How long is the delivery time?

Usually 5-6 weeks from technical approval, depending on product and order size. There may be deviations in the case of custom-made products. Plan your project with us — inquire now.

Is there an assembly service?

Yes, KOCHS delivers and assembles via its own teams in the Aachen region or qualified specialist partners. These take care of measurement, installation and maintenance. For local end customers: visit our Exhibition in Herzogenrath.

Does KOCHS offer funding advice?

Absolutely! Our partners advise on KfW or BAFA subsidies for energy-efficient renovations and burglary protection. KOCHS provides evidence and, upon request, accepts the application. Take advantage of our Funding advice.

How long is the warranty period?

4-year manufacturer's warranty with proper installation and care. Expanded conditions may apply to components.

How do I properly care for KOCH windows?

Our easy-to-clean windows are easy to clean with a mild agent. Regular maintenance of seals and fittings ensures durability. Care instructions are included with every product.

How can I obtain KOCH windows?

As an end customer, contact a specialist partner near you — for local customers, we recommend our exposition. Architects and planners receive technical data and documents on our specialized landing page.

Why are plastic windows (PVC) more sustainable than wooden windows?

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