Business Details
50+ Years
experience
Your Trusted Partner for Home Builders Solutions
AHT Wisconsin Windows has been a family-owned and -operated home improvement company since 1967, dedicated to enhancing Wisconsin homes with energy-efficient replacement windows and doors. Our commitment to quality materials and superior customer service has made us a trusted choice across Appleton, Green Bay, Madison, and surrounding areas. We specialize in solid-core composite frame windows and premium doors engineered to withstand Wisconsin's harsh climate. With decades of experience, we deliver products that combine durability, energy savings, and aesthetic appeal, backed by industry-leading warranties.Our team of trained installers ensures every project meets exacting standards, providing peace of mind through our 50-year workmanship warranty and 10-year glass breakage coverage. We prioritize customer satisfaction through personalized consultations, transparent pricing, and meticulous attention to detail in every installation.
Services
Replacement Windows
Entry Doors
Sliding Patio Doors
Storm Doors
Double Hung Windows
Casement Windows
Triple Pane Glass
Composite Frames
Energy Efficient
Custom Installation
Details
- Year established: 1967
Highlights and features
- 50-year transferable, non-prorated warranties on all products
- No subcontractors - factory-trained installation teams
- Solid-core composite frames 400% stronger than vinyl
- Triple-pane glass with 214% better insulation than vinyl
- Locally owned serving Wisconsin communities for 58 years
Associations and certifications
- ENERGY STAR
- National Fenestration Rating Council (NFRC)
- Qualified Remodeler Top 500
What people say
Energy savings
Professional installation
Durable products
50-year warranty
Local expertise
Services
Replacement Windows
Our composite frame windows offer 400% greater strength and 214% better insulation than vinyl. Triple-pane glass with low-E coatings and gas fills reduce heat transfer while requiring virtually no maintenance. ENERGY STAR certification ensures maximum energy savings for Wisconsin homeowners.
Entry Doors
Custom fiberglass or steel entry doors feature adjustable hinges and compression seals for superior energy efficiency. Available in 22-gauge steel or fiberglass construction with multiple design options. Reinforced frames provide enhanced security and durability against Wisconsin weather.
Sliding Patio Doors
Triple-pane sliding glass doors combine durability with thermal performance. Steel-reinforced frames and multi-point locking systems enhance security. Custom sizing options ensure perfect fit for unique Wisconsin home designs while maintaining energy efficiency.
Storm Doors
Heavy-duty aluminum storm doors with triple-seal weatherstripping improve energy efficiency. Features include self-storing glass panels and 16 color options. Welded frames provide lasting protection against Wisconsin's extreme weather conditions.
Triple Pane Glass
Our triple-pane technology includes two low-E coatings and proprietary gas fills. This system reduces heat transfer by 214% compared to vinyl windows while minimizing condensation and noise pollution for Wisconsin homeowners.
Questions
How long have you been in business?
We've served Wisconsin homeowners since 1967 with replacement windows and doors.
Do you offer energy-efficient windows?
Yes, our triple-pane windows are ENERGY STAR certified for maximum efficiency.
Are installation services included?
Yes, we provide professional installation with all window and door purchases.
What areas do you serve?
We serve Appleton, Green Bay, Madison, and surrounding Wisconsin communities.
Do you offer financing options?
Yes, we provide low payment financing options for qualified customers.
What warranties do you provide?
We offer 50-year non-prorated warranties on both products and installation workmanship.
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