Choose from two lines of KleerTek windows:
Alpine Series – Smooth, contemporary curves with dual seals for everyday performance and value.
Lumina Series – Sleek, modern square profiles with triple seals, premium finishes, and advanced energy ratings.
Contact a KleerTek authorized dealer to learn more, see profiles, and understand how KleerTek can upgrade your space.
Your dealer or installer will provide a quote using our KleerTek visualizer tool and design software.
Relax behind your new KleerTek windows, knowing your home is quieter, brighter, and more efficient for decades to come.
If you’re ready for windows that last a lifetime, KleerTek makes it simple. You’ll get precision-engineered quality, professional support, and energy-saving performance, all backed by a best-in-class warranty.
Whether you own a commercial property or a home, are a builder or an architect, we’re here to make your project seamless from design to installation.
Discover the difference in European craftsmanship, made in America.
Each KleerTek window is built using German-engineered profiles, the same systems trusted across Europe for airtight performance and structural integrity. We manufacture locally, so you get faster lead times, US-based service, and support you can actually reach.
Our multi-chambered uPVC frames keep heat where it belongs: inside during winter, outside during summer. The result: consistent comfort and real energy savings all year long.
KleerTek’s double or triple-pane glazing and precision seals block out noise from traffic, wind, and weather. Whether you’re near a busy road or in the countryside, your home stays calm, quiet, and serene.
Tilt-and-turn functionality, clean lines, and large uninterrupted glass panels deliver modern aesthetics with unmatched practicality. Each finish — from classic white to sleek black — is fade-resistant, low-maintenance, and built to last.
Our steel-reinforced frames support extra-large window openings, perfect for custom homes, barndominiums, and commercial designs that demand expansive natural light and panoramic views.
KleerTek windows use precision profiles that are thicker, stronger, and more airtight than standard vinyl frames. They feature multiple chambers for insulation, steel reinforcement, and multi-seal technology for superior performance.
Operable windows function differently. Instead of sliding vertically or horizontally, the windows are hinged or optionally, both tilt-in and hinged for maximum flexibility.
Yes, our high-efficiency windows are designed to meet and exceed U.S. energy-code standards. The multi-chambered design minimizes heat and cold transfer, reducing utility costs year-round.
The Alpine line offers classic white-outside/white-inside or black-outside/white-inside finishes, while the Lumina line adds a range of modern tones—Anthracite Grey, Flemish Gold, and Ash Bronze, plus optional woodgrain interior finishes.
We can manufacture fixed windows up to 132 inches in a single unit and operable tilt-and-turn windows to almost 8 feet tall, depending on the design.
Every KleerTek window is built and assembled in North Carolina, for fast service, local quality control, and easy access to replacement parts if ever needed.