Minimum purchase of 3 windows. Promotion can not be combined with other offers.
Other restrictions apply. Expires November 30th, 2025
Promotion can not be combined with other offers.
Other restrictions apply. Expires November 30th, 2025
Minimum purchase of 3 windows. Promotion can not be combined with other offers.
Other restrictions apply. Expires November 30th, 2025
Minimum purchase of 3 windows. Promotion can not be combined with other offers.
Other restrictions apply. Expires November 30th, 2025
Promotion can not be combined with other offers.
Other restrictions apply. Expires November 30th, 2025
For outstanding replacement windows and doors in Appleton, Green Bay, Madison, and nearby areas, look no further than AHT Wisconsin Windows, a family-owned and operated company based in Clintonville, WI, serving Wisconsin homeowners since 1967. We understand the unique needs of Wisconsin’s climate and proudly offer products that are “built frozen tundra tested tuff.”
Our high-performance windows are made with a revolutionary composite material that’s 400% stronger and 214% more insulating than vinyl. Each triple-pane window features two Low-E glass coatings and dual chambers of proprietary insulating gas to drastically reduce heat transfer. These ENERGY STAR “Most Efficient” rated windows combine durability, efficiency, and low maintenance for long-term performance.
And it’s not just windows, AHT also offers energy-efficient entry, patio, and storm doors that complement our window systems for a complete home upgrade. Every product is crafted to improve comfort, reduce energy loss, and withstand the toughest Wisconsin weather.
Whether you’re renovating your home or replacing aging products, AHT Wisconsin Windows delivers proven performance, expert installation, and lasting value.
Our windows and doors are engineered specifically for Wisconsin’s extreme climate — resisting warping, cracking, and energy loss in even the harshest conditions. Unlike generic, out-of-state products, our materials are designed to handle freezing temperatures, heavy snow, and strong winds. From reinforced frames to multi-point weather seals on our doors, every detail is built for the Badger State.
AHT Wisconsin Windows offers a full selection of window styles, including double-hung, casement, slider, bay, bow, and specialty shapes. Our doors follow the same principle of durability and customization — available in 22-gauge steel or fiberglass with adjustable hinges, compression seals, and thermal cores to prevent drafts and heat loss. Whatever your home’s design, we provide solutions that blend performance with beauty.
AHT Wisconsin Windows offers some of the strongest warranties in the industry: 50-Year Transferable, Non-Prorated Manufacturer’s Warranty, 50-Year Workmanship Warranty, 10-Year Glass Breakage Warranty, Our customers enjoy long-term confidence knowing both the product and installation are fully protected.
AHT never uses subcontractors. Every window and door is installed by our own factory-trained professionals to ensure a perfect fit and optimal efficiency. Proper installation protects your investment and maintains your warranty coverage. We back every job with our exclusive 50-Year Workmanship Warranty for unmatched peace of mind.
For more information about our window installation services, warranties, and ongoing customer care like our 50-year workmanship warranty, feel free to contact us. Your home deserves the best, and AHT Wisconsin Windows is here to provide it.
Call Us Today Get a QuoteDiscover why AHT Wisconsin Windows stands out as the trusted choice for homeowners in Wisconsin, from Green Bay to Appleton to Madison and beyond.
Since 1967, AHT Wisconsin Windows has been installing premium windows and doors across Wisconsin. Thousands of satisfied homeowners have experienced the difference. We provide products that look great, operate smoothly, and save energy for decades. Built to endure the toughest Midwest weather, our windows and doors are a long-term investment in your home’s comfort and efficiency.
Our windows feature solid-core Advanced Polymeric Composite (APC) frames, not hollow vinyl for superior strength, insulation, and weather resistance. Our entry and patio doors share this same commitment to quality, with reinforced panels, insulated cores, and precision hardware to ensure performance and security. Together, they create a tighter, more efficient home envelope that reduces heating and cooling costs.
From consultation to installation, our team focuses on delivering the best home improvement experience possible. Every product is made in the USA and installed by professionals who take pride in their craftsmanship. With our robust warranties and responsive customer service, you can count on AHT Wisconsin Windows to deliver peace of mind that lasts a lifetime.
Glass accounts for nearly 87% of a window’s surface area, that’s why our triple-pane glass systems make such a difference. These advanced units improve energy efficiency, reduce outside noise, and minimize condensation, keeping your home comfortable in every season.
According to the EPA, up to 30% of heating and cooling energy loss occurs through windows. AHT Wisconsin Windows’ triple-pane, ENERGY STAR “Most Efficient” certified models dramatically reduce that loss. Combined with our insulated doors, you’ll experience year-round savings, enhanced comfort, and the confidence that your home is built for Wisconsin’s future.
The windows arrived, were installed and are now fully enjoyed because they look great. They also function better than any window I have ever seen. They did not leave a mess when they were done installing. The time it took seemed very efficient. I am well pleased.
I love the new windows. I was not home when they installed them, but my dad was here and said the guys were very friendly and professional! Your guys did an excellent job inside and out. The windows not only look great, but I noticed the rooms they were put in are warmer! Thank you!
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