New Windows for Your New Glarus Home

AHT Wisconsin Windows is the go-to choice for families in New Glarus, WI who want insulated replacement windows built to handle everything from blizzards to heat waves. We specialize in installations that decrease energy bills and improve street presence.

If your home’s windows have seen better days, now is the time to invest in an upgrade. AHT Wisconsin Windows serves New Glarus with top-tier replacement windows and doors engineered to perform through long winters and seasonal temperature swings.

Better Windows for New Glarus Homes

New replacement windows go beyond improving how your home looks. They can significantly lower heating and cooling costs. An estimated 25-30%% of heating and cooling costs can be traced back to inefficient windows. Upgrading to insulated replacement windows is one of the smartest investments families in New Glarus can make.

We install some of the most advanced replacement windows available today, offering:

Custom sizing available for older and non-standard New Glarus homes
UV protection to shield your interior furnishings from fading
Noise reduction for a quieter living space
Superior insulation for Wisconsin winters and summers

New Glarus Patio Doors & Sliding Glass Doors

Property owners don’t have to sacrifice style for performance. Our replacement patio doors and sliding glass doors are engineered for energy efficiency, security, and gliding operation, all while enhancing the finish of your home.

Our patio doors feature:

Warm-edge insulation technology to maximize energy efficiency
Multiple color options and finishes to match your home’s design
Step locks for added security when doors are closed or partially open
Weather-stripping designed to block drafts and moisture
Triple-pane clear glass available on all patio door models

Upgrade Your New Glarus Entry Door

AHT Wisconsin Windows offers insulated exterior doors that help keep your New Glarus home warm, well-protected, and comfortable through brutal Midwest weather. We carry a wide selection of fiberglass entry doors, front doors, storm doors, and exterior doors designed for lasting performance.

Our Signature Series entry doors are built with high-performance materials and feature:

Custom finishes and upgraded hardware options to match your home’s style
Professional installation by experienced New Glarus-area technicians
Three-way compression gaskets on three sides for a tight, weather-resistant seal
Significantly minimized air infiltration and water leak protection

All of our entry doors come with a 50-year transferable, non-prorated warranty, one of the strongest in the industry.

Trusted Since 1967

For over five decades, AHT Wisconsin Windows has been a name local homeowners in New Glarus trust. With more than 12,000 completed projects statewide, we’ve earned our reputation through consistent superior work and quality products.

In addition to our industry-leading products, we offer:

A 50-year warranty on door seals
A 50-year transferable, non-prorated warranty on components and workmanship

Recent Window Replacement Projects Near New Glarus

A look at recent window and door replacements we've completed for homeowners in the area.

Wagner in Madison, WI

Madison May 2026

An entry door

Installed a new entry door in Madison WI. This door features a window inside of it that can be opened and closed for ventilation. During the install, we removed the old door…

2 photos

Titus in Sun Prairie

Sun Prairie June 2026

4 double-hung and picture windows

We were in Sun Prairie installing two double hungs and two picture windows. These window replacements were a standard installation, leaving the interior stops from the existing…

2 photos

Sattler in Oshkosh, WI

Oshkosh June 2026

1 double-hung window

We were in a home in Oshkosh, WI converting an existing entry door into a Double Hung window. We kept the existing width of the opening and made sure that the window was at the…