Older windows leak conditioned air year-round! The resulting spike in heating and cooling costs is the single most common reason homeowners start shopping for replacements. Koalaty Windows connects homeowners with licensed, vetted local contractors who install windows engineered to meet 2026 Energy Star 7.0 performance thresholds, not just the minimum code requirement.
Air Leakage (AL) ratings quantify how much outside air passes through the frame and sash under pressure; a tighter rating protects the U-factor performance the glass was rated for. Condensation Resistance (CR) indicates how well the interior glass surface resists fogging in cold weather.
One frequent complaint Koalaty Windows hears homeowners report is that even after installing “energy-efficient” windows that were never verified against this rating. With our vetted contractors, you can always count on having that extra verification and assurance.
The U-factor measures how much heat escapes through the window assembly including essential parts like the frame, glass, and spacer combined. Lower numbers mean less heat loss.
Energy Star 7.0 sets a U-factor ceiling of 0.22 or lower for Northern and North-Central climate zones. This threshold is hard to reach by most standard double-pane windows without added glazing layers or gas fill.
SHGC measures how much solar radiation passes through the glass as heat. Southern climate zones prioritize a low SHGC, generally below 0.20, to keep summer cooling loads down. Northern homeowners often want the opposite trade-off which is enough solar gain to offset heating costs without sacrificing the U-factor target.
Koalaty Windows matches homeowners with vetted local contractors nationwide, so these performance standards apply whether the project is in a Northern heating-dominated climate or a Southern cooling-dominated one.
Homeowners who want the full breakdown of installation methods — full-frame versus pocket installation — can review Koalaty’s window replacement and installation standards before requesting a quote. Contractors matched through Koalaty are licensed, insured, and vetted for both technical accuracy and fair pricing.
Section 25C requires windows to meet the “Energy Star Most Efficient” criteria for the year of installation, which is generally a stricter threshold than baseline Energy Star 7.0 certification. The window contractors that work with Koalaty confirm the exact rating requirement against the current year’s criteria before the project is quoted.
Not automatically. A krypton-filled double-pane unit can reach the same 0.22 U-factor threshold as some triple-pane assemblies, depending on the spacer system and coating package. The right choice depends on the specific window’s size, frame material, and climate zone.
High Condensation Resistance ratings reduce interior fogging significantly, but indoor humidity levels also play a role. A reputable contractor can flag when a home’s humidity, not the window itself, is the primary driver of persistent condensation.
Material costs are typically higher due to additional glazing layers, gas fill, and coating packages. Koalaty’s Fair Price Algorithm itemizes these costs separately from labor so homeowners can see exactly what the performance upgrade is paying for.
Yes. Northern and North-Central zones are evaluated primarily on U-factor, while Southern zones are evaluated primarily on SHGC. Koalaty’s vetted pros select glazing packages matched to the home’s specific zone rather than applying a single national specification.
Ready to improve your home’s curb appeal and energy efficiency with beautiful new windows? Koalaty Windows is here to help you find the perfect contractor for your window replacement project. With the Koalaty trusted network of vetted professionals, you can be confident that you’re getting quality workmanship at a competitive price and can enjoy the benefits of energy efficiency.
Take advantage of our free quotes and connect with local window professionals. The first step towards a more comfortable and energy-efficient home is here. Get your free quotes now and connect with top-rated local window professionals who can help you replace your windows and achieve your home improvement goals.
Don’t wait—start your journey to new windows and save money on your energy bills today!
Ready to improve your home’s curb appeal and energy efficiency with beautiful new windows? Koalaty Windows is here to help you find the perfect contractor for your window replacement project. With the Koalaty trusted network of vetted professionals, you can be confident that you’re getting quality workmanship at a competitive price and can enjoy the benefits of energy efficiency.