Expert Window and Door Replacement in Custer

For homeowners in Custer, Wisconsin, AHT Wisconsin Windows is the trusted name in high-performance window and door replacement. Since 1967, we’ve provided durable, energy-efficient products designed specifically to handle Wisconsin’s weather—while improving comfort, reducing utility bills, and boosting your home’s curb appeal.

Durable, Energy-Efficient Windows

Our windows are built from a proprietary composite material that is four times stronger than standard vinyl, delivering exceptional strength and long-term performance. Each window features triple-pane glass filled with krypton gas and coated with Low-E technology to reduce heat transfer, improve insulation, and enhance indoor comfort all year long. These advanced features have earned our windows the “most efficient” rating from ENERGY STAR.

Choose from a wide range of customizable window styles to suit your Custer home:

  • Double Hung

  • Slider

  • Casement

  • Bay

  • Bow

  • Awning

  • Picture

  • Egress

  • Specialty Windows

Each window comes in a selection of finishes so you can tailor the look to match your home’s interior and exterior design.

High-Performance Entry and Patio Doors

Our Signature Series entry doors are engineered with premium materials and triple-seal compression gaskets to provide a tight, energy-saving seal against the elements. Available in a variety of colors, finishes, and hardware styles, these doors combine function and style for your Custer home.

We also install durable, energy-efficient patio and sliding glass doors with features like:

  • Multi-point locking systems for added security

  • Step locks for partial-door safety

  • Smooth-gliding monorail track systems

  • Warm-edge spacer systems to improve thermal efficiency

Our triple-pane patio doors help seal in comfort and keep energy costs under control throughout the seasons.

Precision Installation and 50-Year Warranty

Every window and door we install is handled by trained professionals who take pride in quality workmanship. We back your investment with a 50-year transferable, non-prorated manufacturer’s warranty and a 50-year workmanship guarantee—providing you peace of mind for decades to come.

Why Replace Your Windows and Doors?

Replacing outdated windows and doors can significantly improve your home’s:

  • Energy Efficiency – Reduce up to 60% of energy loss from older units.

  • Indoor Comfort – Keep out drafts, hot spots, and cold air.

  • Appearance and Value – Refresh your home’s look and increase resale appeal.

Get a Free Quote in Custer

If you’re ready to upgrade your windows and doors in Custer, WI, contact AHT Wisconsin Windows today. Our team will walk you through your options and provide a free, no-obligation quote. See why Custer homeowners rely on us for expert window and door replacement that lasts.