Replacement Windows in Appleton, WI

When homeowners in Appleton, Wisconsin need reliable, energy-efficient replacement windows, they turn to AHT Wisconsin Windows. We specialize in installing high-performance windows designed to improve comfort, reduce energy loss, and enhance curb appeal for homes throughout Appleton and the surrounding Fox Valley.

Whether you’re upgrading aging windows or planning improvements for your current home, our team is here to answer your questions and guide you through your options. We install durable, customizable replacement windows and doors built to handle Wisconsin’s demanding climate.

Your Local Appleton Window Replacement Company

New replacement windows do more than improve how your home looks — they can significantly reduce heating and cooling costs. In fact, windows can account for up to 30% of a home’s energy loss. Upgrading to modern, energy-efficient replacement windows is one of the most effective ways to improve comfort year-round while lowering utility bills.

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

• Superior insulation for Wisconsin winters and summers

• Increased indoor comfort and reduced drafts

• Long-lasting durability and low maintenance

• Styles and finishes designed to complement your home

Entry Doors in Appleton

AHT Wisconsin Windows offers energy-efficient exterior doors that help keep your home warm, secure, and comfortable through harsh Midwest weather. We install a wide selection of fiberglass entry doors, front doors, storm doors, and exterior doors designed for long-term performance.

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

• Three-way compression gaskets on three sides for a tight, weather-resistant seal

• Reduced air infiltration and protection against water leaks

• Custom finishes and upgraded hardware options

• Exceptional durability in extreme temperature swings

Every entry door we install is backed by a 50-year transferable, non-prorated manufacturer’s warranty, giving you confidence long after installation.

Sliding Glass & Patio Doors in Appleton

Homeowners don’t have to sacrifice style for performance. Our replacement patio doors and sliding glass doors are engineered for energy efficiency, security, and smooth operation — all while enhancing the look of your home.

Our patio doors feature:

• Multi-point locking systems with single-lever operation

• Step locks for added security when closed or partially open

• Monorail sliding systems with top and bottom rollers for smooth operation

• Warm-edge insulation to improve energy efficiency

• Multiple color options to match your home

• Triple-pane clear glass available on all patio door models

Trusted Since 1967

Since 1967, AHT Wisconsin Windows has proudly served homeowners across Wisconsin, completing projects for more than 12,000 satisfied customers. Our reputation is built on quality craftsmanship, dependable service, and premium window and door 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

Serving Appleton & Nearby Communities

Contact AHT Wisconsin Windows today to learn more about replacement windows, entry doors, and sliding glass doors in Appleton and surrounding areas, including:

Appleton, Kaukauna, Neenah, Menasha, Little Chute, Grand Chute, Greenville, Freedom, Black Creek, Combined Locks, Kimberly, Seymour, Shiocton, Hortonville, Bear Creek, Sherwood, and nearby Wisconsin communities.

Proudly serving zip codes:
54106, 54113, 54130, 54131, 54136, 54140, 54165, 54170, 54169, 54911, 54913, 54914, 54915, 54922, 54942, 54944, 54952, 54956, 54957