Business Details
50+ Years
experience
Energy-Efficient Replacement Windows in Milwaukee
Founded in 1957, Wasco Windows has evolved from a local aluminum supply company into a leader in energy-efficient window manufacturing and installation. Our family-owned business combines decades of craftsmanship with cutting-edge technology to deliver products engineered for Wisconsin's climate. We pioneered vinyl replacement windows in the region and introduced the first American-made European Passivhaus-standard window system. Our team of certified professionals brings unparalleled expertise, with over 25 years of industry experience and advanced engineering credentials.We maintain full control over quality from production to installation, ensuring every project meets our exacting standards. Our commitment to innovation is reflected in our patented processes and PHIUS-certified products that exceed Energy Star requirements. We prioritize customer satisfaction through transparent communication, durable lifetime-warranty products, and personalized service tailored to each homeowner's needs. Our local focus extends to supporting Wisconsin communities through volunteer initiatives and sustainable manufacturing practices.
Services
Replacement Windows
European Windows
Premium Windows
Door Installations
Custom Window Solutions
Details
- Year established: 1957
Highlights and features
- Family-owned since 1957 with third-generation engineering expertise
- First to introduce Passivhaus-standard windows in North America
- In-house installation team with 25+ years average experience
- Lifetime warranty on all window products
- Custom manufacturing for Wisconsin's unique climate challenges
Associations and certifications
- PHIUS (Passive House Institute U.S.)
What people say
Excellent energy savings
Professional installation team
Durable lifetime warranty products
Custom solutions available
Knowledgeable staff
Services
Replacement Windows
Upgrade your home with energy-efficient replacement windows designed for Wisconsin's climate. Our windows reduce energy bills by minimizing heat loss in winter and heat gain in summer. Features include double-strength Cardinal LoE glass, SuperSpacer foam technology, and multi-chambered vinyl frames that enhance insulation while maintaining structural integrity.
European Windows
Import German-engineered Tilt & Turn windows that combine security with ventilation efficiency. These windows feature Roto-Frank hardware for dual-function operation and mullionless French window options. The design allows easy cleaning and maximizes natural light while maintaining thermal performance through insulated RAU-FIPRO profiles.
Premium Windows
Durable vinyl windows with multi-chambered profiles reinforced for long-term performance. Includes System 700 Double Hung and 1400 Casement models that exceed 2014 EnergyStar requirements. Features Cardinal glass packages and warm-edge spacers to prevent condensation in cold climates.
Door Installations
Install energy-efficient entry and patio doors that enhance home security and aesthetics. Our GENEO series doors use six-chamber RAU-FIPRO profiles for passive homes, while the 4500 Series offers cost-effective solutions for retrofits. Both options include reinforced steel components and premium weatherstripping.
Custom Window Solutions
Order custom-manufactured windows for self-installation projects. Available in white or almond vinyl with multiple grid and glass options. Includes technical support and delivery options for orders within 200 miles of Milwaukee, with minimum order requirements applying for delivery services.
People
Dave Paulus
Owner
Marquette University business graduate and Certified Public Accountant with 40+ years in window manufacturing. Transformed Wasco Windows into a regional leader in energy-efficient windows since acquiring the company in 1983.
David Paulus, Jr.
Engineer
Mechanical engineering PhD with experience at Siemens Power and Technische Universitt Berlin. Developed innovative window systems including the Geneo RAU-FIPRO model. Oversees product development and manufacturing improvements at Wasco Windows.
David R.
Installation Manager
27-year Wasco Windows veteran leading installation teams. Emphasizes quality control and customer satisfaction, ensuring every project meets the company's high standards through hands-on management of installation processes.
Rick V.
Manager
26-year employee with expertise in balancing energy efficiency and aesthetic appeal. Advocates for transparent pricing and quality products that deliver measurable utility bill savings for Wisconsin homeowners.
Aaron W.
Installation Carpenter
13-year team member specializing in window replacement challenges. Focuses on maintaining Wasco Windows's reputation for quality through precise installations and adherence to the company's lifetime warranty standards.
Questions
What makes WASCO windows suitable for Wisconsin's climate?
Our windows feature double-strength Cardinal LoE glass to minimize heat loss, SuperSpacer foam technology to prevent condensation, and multi-chambered vinyl frames that maintain structural integrity in extreme temperatures.
Do you offer European-style windows?
Yes, our Tilt & Turn windows use German-engineered Roto-Frank hardware and RAU-FIPRO profiles that meet Passivhaus standards while providing superior ventilation and security features.
Are installation services included?
All installations are performed by our bonded employees using in-house crews, ensuring quality control from manufacturing to final installation with lifetime warranty support for all components.
Can I purchase windows for self-installation?
We offer custom-manufactured windows for DIY projects with technical support available. Delivery options exist for orders within 200 miles of Milwaukee, subject to minimum order requirements.
What warranty coverage do you provide?
We offer a lifetime warranty covering glass seal failure, cracks, and necessary replacement parts. Unlike national manufacturers, we maintain inventory of replacement components for all window models.
How do your windows compare to national brands?
Our handcrafted windows exceed Energy Star standards using premium materials like Cardinal glass and Roto-Frank hardware, priced competitively against mass-produced national brands without compromising quality.
