Business Details
50+ Years
experience
Trusted Replacement Windows & Doors in Wisconsin
AHT Wisconsin Windows has been a trusted name in home improvement since 1967, specializing in energy-efficient replacement windows and doors designed to withstand Wisconsin's harsh climate. Our proprietary composite material frames offer 400% greater strength and 214% better insulation than vinyl, earning us recognition as ENERGY STAR's most efficient windows. With a commitment to quality, we provide 50-year non-prorated warranties and maintain an in-house team of factory-trained installers to ensure flawless execution.Our family-owned operation serves Appleton, Green Bay, Madison, and surrounding areas, combining decades of local expertise with nationally recognized standards. We prioritize customer satisfaction through transparent consultations, meticulous installations, and ongoing support that extends beyond project completion.
Services
Replacement Windows
Entry Doors
Patio Doors
Storm Doors
Composite Frames
Triple-Pane Glass
Window Installation
Door Installation
Financing Options
Warranty Service
Details
- Year established: 1967
Highlights and features
- We offer 50-year non-prorated warranties on all products and installations
- Our proprietary composite frames outperform vinyl in strength and insulation
- Factory-trained installers ensure precision with no subcontractors used
- Recognized among Qualified Remodeler's Top 500 companies since 1998
- Triple-pane windows reduce energy transfer by combining low-E coatings and gas chambers
Associations and certifications
- ENERGY STAR
What people say
Energy savings
Professional installation
Durable construction
Lifetime warranties
Local expertise
Services
Replacement Windows
Our composite-frame replacement windows combine 400% greater strength than vinyl with triple-pane glass technology. Two low-E coatings and gas chambers minimize heat transfer while requiring no maintenance. ENERGY STAR-certified for superior efficiency in Wisconsin's climate.
Entry Doors
Custom entry doors feature 22-gauge steel or fiberglass construction with adjustable hinges and compression seals. Designed for maximum energy efficiency while enhancing home security and curb appeal through durable, weather-resistant materials.
Patio Doors
Triple-pane patio doors provide exceptional insulation and structural integrity. Heavy-duty frames withstand Wisconsin winters while allowing natural light transmission without compromising interior comfort or energy costs.
Storm Doors
Commercial-grade storm doors offer enhanced protection against extreme weather. Thicker metal construction with reinforced frames creates an additional barrier against air infiltration while preserving exterior aesthetics.
Window Installation
Factory-trained technicians ensure precise window fitting using proprietary installation methods. Each project includes comprehensive cleanup and operational training, with warranties voided for self-installation attempts to guarantee performance standards.
Questions
Do you install vinyl replacement windows?
No, we exclusively use advanced polymeric composite frames that outperform vinyl in durability and insulation.
Are triple-pane windows available?
Yes, all our windows feature triple-pane glass with dual low-E coatings and gas chambers for maximum efficiency.
What warranties do you offer?
We provide a 50-year non-prorated workmanship warranty and a 10-year glass breakage warranty on all installations.
Do you service my area?
We serve Appleton, Green Bay, Madison, Clintonville, and surrounding Wisconsin communities within 75 miles of our offices.
Can I install windows myself?
No, professional installation is required to maintain warranties and ensure proper energy efficiency performance.
Are financing options available?
Yes, we offer low-payment financing plans with approved credit for qualified homeowners.
Videos
Reviews (7)
Julie Zwiers
May 18, 2022
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Very pushy salesperson. He would not take no for an answer! He was at our home from 6 pm- until 10:45 pm. I am sure the windows are nice, but the are not at all affordable!
Kaleb Ramsden
Feb 27, 2022
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AJ was extremely professional, friendly, and a pleasure to work with. He took his time to go over examples and costs of other windows and other companies warranties. The windows that AHT offer are much more efficient and a higher quality overall, including a 50 YEAR WARRANTY! Great company to work with. I highly recommend for windows and doors.
Amanda Sadler
Jan 16, 2022
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We worked with Craig who was amazing and friendly. He had so much knowledge on windows that helped us make the decision to make the switch to a new sliding door that was secure and energy efficient. If you're looking for new windows and sliding doors that will last a life time, i would highly recommend this company. Services: General door installation, Custom doors
C. Zeinert
Sep 30, 2021
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Anissa was very friendly and infomative! She did a good job with her sales tactic as we will be getting a new patio door! Service: Door installation
Josephine Holman
Jun 05, 2021
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Craig was amazing at his presentation! Very professional and very kind! We love the time he spent explaining their processes! We absolutely excited about our purchase! Service: Door installation
Donna Macleish
May 31, 2021
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Energy efficient, warranty salesman with great personality and informative. Service: Window installation
Chris O'Neal
May 26, 2021
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Really like the ease of operation, energy efficiency and they look good Services: General door installation, Window installation
