Energy-Efficient Window Replacement & Rehabilitation

Upgrade to ENERGY STAR® Windows for Comfort, Efficiency, and Safety

Windows are the least insulated part of most homes—a tradeoff we make for beautiful, natural light. But drafty, outdated windows can cost you big on your energy bills and even pose serious health risks if lead paint is involved.

At Green Homeowners United, we deliver and install high-efficiency ENERGY STAR® windows across Southeastern Wisconsin. Whether you’re looking to reduce your energy costs, boost curb appeal, or address lead paint hazards in homes built before 1978, we have the expertise and certifications to help.

Why Replace Your Windows?

Save Energy: Modern vinyl windows come in double-pane and triple-pane options, complete with:

Low-E film coatings that reflect heat
Argon gas fills for better insulation
Durable frames that reduce heat transfer and air leaks

Stay Comfortable in Wisconsin Weather: From bitter winters to humid summers, high-performance windows help regulate indoor temperatures and keep your home comfortable year-round.

Improve Safety with Lead-Safe Renovations: Older windows, especially in homes built before 1978, can be surrounded by dangerous lead paint. Our team is fully lead abatement trained and certified, offering lead-safe window replacements and spot testing to protect your family’s health.

Window Replacement vs. Window Rehabilitation

While new windows offer many benefits, they can be one of the more expensive energy efficiency upgrades. That’s why we often recommend:

Start with air sealing and insulation first (especially in your attic and basement) to make the biggest impact on energy savings. Then, upgrade your windows for long-term comfort and aesthetic improvements.

Not all old windows need to go. In fact, rehabbing your existing windows may be better for the environment and your budget.

We offer sustainable window repair services including:

Fixing locks and sashes
Improving or adding weatherstripping
Air sealing rough-in areas behind window trim using spray foam insulation (a major upgrade over leaky fiberglass)
Sealing outdated weight and pulley systems

Maximize Rebates with Strategic Window Upgrades

Thanks to the Inflation Reduction Act, homeowners can now qualify for rebates on window replacements. Because these benefits reset each year, you can maximize savings by spreading replacements across multiple tax years.

Get Started with a Window Assessment Today

Whether you're ready to replace your windows or want to explore energy-efficient window rehab options, Green Homeowners United is here to help with local expertise, certified lead-safe services, and honest recommendations.