Energy-Efficient Windows
Consumer guide to energy-efficient windows.
Editorial note: This guide is educational. Pricing, programs, eligibility and rules can change. Verify important details with current official sources and qualified professionals.
Overview
Energy-efficient windows use design, glazing and coatings intended to reduce unwanted heat transfer and improve indoor comfort.
What to Consider
Review climate-specific ratings, orientation, shading, air leakage, installation quality and the whole-home impact before choosing a product.
Questions to Ask
- Which U-factor and solar heat gain ratings fit the home?
- How is air leakage tested?
- Will installation address surrounding air and water sealing?