Upgrade Your New London Home with New Windows

Are your windows letting freezing air seep into your New London home? AHT Wisconsin Windows helps property owners throughout New London upgrade to insulated replacement windows that deliver real savings and lasting year-round comfort.

Our team works with local homeowners in New London to find the right fit, whether that means a full window replacement, a single entry door upgrade, or a combination of both. Every product we offer is designed to withstand the full range of Midwest weather extremes.

Your Local New London Window Replacement Company

There’s more to window replacement than curb appeal. Studies show that windows are one of the biggest sources of energy loss, contributing up to 30%%. For New London, WI, that means upgrading to modern, thermally efficient windows is one of the most cost-effective home improvements available.

Our replacement windows deliver measurable advantages:

A wide selection of styles and finishes to complement your New London home
Built to last construction with minimal maintenance requirements
Noise reduction for a quieter living space
First-rate insulation for Wisconsin winters and summers

Why New London Trusts AHT Wisconsin Windows

AHT Wisconsin Windows has been helping families since 1967. Over 12,000 satisfied customers later, our commitment to premium craftsmanship and proven service remains as strong as ever.

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

Entry Doors in New London

Your front door does more than welcome visitors. It’s your home’s first line of defense against the cold. AHT Wisconsin Windows provides New London high-efficiency entry doors, storm doors, and exterior doors that stand up to subzero windchills and sweltering July afternoons while keeping your New London home cozy and draft-free.

What makes our Signature Series entry doors stand out:

Exceptional durability in extreme temperature swings
Professional installation by experienced New London-area technicians
Multi-point locking hardware for enhanced home security
Energy-efficient cores that help maintain consistent indoor temperatures

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

Upgrade Your New London Patio Door

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 finish of your home.

Every patio door we install comes equipped with:

Step locks for added security when doors are closed or partially open
Multiple color options and finishes to match your home’s design
Warm-edge insulation technology to maximize energy efficiency
Multi-point locking systems with single-lever operation for easy, secure access
Triple-pane clear glass available on all patio door models

Recent Window Replacement Projects Near New London

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

2 photos

Aliota in Manawa, Wi

Manawa May 2026

2 double-hung windows as well as a patio door

We just completed an install in Manawa Wi. Here we took out 2 double hung windows and Installed a 6 foot patio door. Header work as well as removal of wall was required for this…

2 photos

Miller in Marion, WI

Marion May 2026

9 double-hung windows

Installed 9 double hung windows and 1 3 lite Slider at the Millers in Marion Wi. The Double Hungs were a standard installation and all went smoothly. No rotten wood or other…

Jacobson in Appleton, WI

Appleton May 2026

1 bay window

Installed a bay window today in Appleton WI. These windows featured our Dark Oak Woodgrain on the inside that brings the rich look of wood without the maintenance. It was…