Energy Efficient Windows

High-Performance Window Replacement Built for Wisconsin Weather

Wisconsin winters demand more from your windows than most climates do. Drafts, cold glass, air leakage, and heat loss become impossible to ignore when temperatures drop for months at a time.

At Frey Construction, we install energy-efficient ProVia windows designed specifically for cold-weather performance. Since 1995, homeowners across the Madison area have trusted our team for professional installation, consistent project management, and long-term workmanship support.

Why Frey Installs ProVia Windows

We exclusively install ProVia windows because we believe the product quality and long-term performance align with the level of installation work we want attached to our name.

ProVia windows are ENERGY STAR® certified and built with features designed to help homes stay more comfortable during Wisconsin’s long winters, including:

• Low-E glass coatings

• Argon gas fills

• Foam-insulated frames and sashes

• Triple-pane glass construction

Together, these features help reduce heat transfer, improve indoor comfort, and enhance overall energy performance year-round.

ProVia Window Series We Install

Aeris Series

The ProVia Aeris line combines a durable vinyl exterior with the look of real wood inside the home. It’s a popular option for homeowners who want a warmer interior appearance without taking on the maintenance demands of traditional wood windows.

Foam-filled sashes and triple-pane glass help improve insulation and year-round comfort.

Endure Series

The ProVia Endure line is a fully vinyl window system designed for durability, energy efficiency, and low maintenance. Like the Aeris series, it includes foam-filled construction and triple-pane glass for strong thermal performance in cold climates.

What Makes a Window Energy Efficient?

Not all “energy-efficient” windows perform at the same level. Several components work together to determine how well a window reduces heat loss and improves comfort inside the home.

Low-E Glass

Low-E coatings help reflect heat and reduce heat transfer through the glass. During winter, this helps keep interior heat inside the home. During summer, it helps reduce solar heat gain.

Argon Gas Fill

Argon gas is placed between the panes instead of standard air because it transfers heat more slowly, improving insulation performance.

Foam-Filled Frames and Sashes

Foam insulation inside the frame helps reduce heat transfer through areas where heat loss is common.

Triple-Pane Glass

Triple-pane windows include three layers of glass with insulated spaces between them, helping reduce heat loss, outside noise, and cold drafts during Wisconsin winters.

ENERGY STAR Certification

ENERGY STAR-certified windows must meet performance standards for the climate region they’re installed in, including requirements related to air leakage, solar heat gain, and overall thermal performance.

Installation Quality Matters Just as Much as the Window

A high-quality window can still underperform if it's installed incorrectly. Improper sealing, poor alignment, or installation gaps can reduce efficiency and create long-term issues with drafts and moisture.

That’s why every Frey Construction window project includes a dedicated project manager overseeing the installation process from beginning to end. Our team focuses on proper fit, sealing, and finishing so the window performs the way it was designed to. We also back our work with a 15-year workmanship warranty covering the installation itself.

Warranty Protection for Long-Term Peace of Mind

Your window replacement project includes two layers of warranty protection:

• Frey’s 15-year workmanship warranty covering installation quality

• ProVia’s manufacturer warranty covering the product itself

Together, they help protect homeowners against the two most common concerns after window replacement: installation issues and product defects. Frey Construction also maintains an A+ rating with the Better Business Bureau.

Financing Options for Window Replacement

Window replacement is a major investment, especially for full-home projects. Financing options are available for qualified homeowners, and we’re happy to discuss available plans during your proposal appointment.

Areas We Serve Across South Central Wisconsin

Frey Construction serves homeowners throughout Madison and surrounding South Central Wisconsin communities, including:

• Middleton

• Waunakee

• Verona

• Sun Prairie

• Sauk City

• Prairie du Sac

• Cross Plains

• Baraboo

• Fitchburg

We also work in many surrounding communities within approximately 25 miles of Madison. For a full list, visit our service area page.