Business Details
50+ Years
experience
Trusted Wisconsin Window & Door Replacement Experts
AHT Wisconsin Windows has been a trusted leader in home improvement since 1967, specializing in energy-efficient replacement windows and doors tailored to Wisconsin's climate. Our commitment to quality materials, superior craftsmanship, and exceptional customer service has earned us recognition as one of the nation's top 500 remodeling companies for over two decades. We pride ourselves on using advanced polymeric composite technology for windows that are 400% stronger than vinyl, ensuring durability and energy savings.With a 50-year non-prorated warranty and in-house installation teams, we guarantee precision and reliability. Our focus on innovation, community values, and personalized solutions has made us a preferred choice for homeowners seeking long-term value and comfort.
Services
Replacement Windows
Entry Doors
Sliding Doors
Storm Doors
Triple-Pane Glass
Composite Frames
Window Installation
Door Installation
Energy-Efficient Solutions
Custom Sizing
Details
- Year established: 1967
Highlights and features
- 50-year transferable, non-prorated warranties on products and workmanship
- In-house factory-trained installation teams with no subcontractors
- Solid-core composite frames 400% stronger than vinyl
- ENERGY STAR Most Efficient certified triple-pane windows
- Locally owned since 1967 with Wisconsin-specific climate expertise
Associations and certifications
- ENERGY STAR
- National Fenestration Rating Council (NFRC)
- Better Business Bureau (A+ Rating)
What people say
No post-installation mess
Improved home comfort
Noise reduction
Durable products
Professional installations
Services
Replacement Windows
Custom composite replacement windows engineered for Wisconsin's climate. Triple-pane glass with low-E coatings and krypton gas fills provide 214% better insulation than vinyl. Fusion-welded corners ensure structural integrity while tilt-in sashes simplify maintenance. Designed to withstand extreme temperature fluctuations without warping or cracking.
Entry Doors
Steel and fiberglass entry doors with composite jambs resist rot and corrosion. Adjustable ball-bearing hinges and 4-point door sweeps create airtight seals. Available in 22-gauge steel or fiberglass with customizable finishes and decorative glass options. Includes multi-point locking systems for enhanced security.
Sliding Glass Doors
Triple-pane sliding glass doors with steel reinforcement and monorail gliding systems. Step locks secure doors in open or closed positions. Custom sizing available for non-standard openings. Features warm-edge insulated glass packs to minimize heat transfer and condensation.
Storm Doors
Aluminum storm doors with triple-seal weatherstripping and self-storing glass panels. Mortised hardware and overlap strike plates enhance durability. Available with baked-on powder coat finishes in 16 colors. Improves energy efficiency by reducing air infiltration through primary entry doors.
Energy Efficiency
Advanced thermal technology solutions including low-E glass coatings, krypton gas fills, and composite framing materials. Reduces heat loss by up to 30% compared to standard windows. Meets ENERGY STAR Most Efficient criteria with U-values as low as 0.18 for improved indoor comfort and lower utility bills.
Questions
How long have you been in business?
Since 1967, originally established as Advanced Home Technologies and rebranded as AHT Wisconsin Windows in 2000.
Do your windows eliminate condensation?
While no window can eliminate condensation entirely, our warm-edge technology glazing systems significantly reduce it by minimizing thermal conductivity.
What makes your windows energy-efficient?
Triple-pane glass with two low-E coatings, krypton gas fills, and composite frames with 400% greater strength than vinyl create superior thermal performance.
Will new windows decrease outside noise?
Customers report approximately 50% noise reduction due to triple-pane construction and advanced glazing technology.
Do you use subcontractors for installations?
No, we employ factory-trained professionals directly to ensure quality control and accountability for every installation.
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