California’s New Energy Code Is Now in Effect: What Homeowners and Builders Need to Know

California's updated Energy Code officially took effect on January 1, 2026, bringing stricter energy-efficiency requirements for new construction and many renovation projects. The changes are part of the state's ongoing effort to reduce energy consumption, lower greenhouse gas emissions, and improve indoor comfort.

For the window and door industry, the biggest impact is the increased focus on high-performance glazing, improved insulation values, and stricter Title 24 compliance standards. Many projects now require windows and doors with lower U-Factors and enhanced solar heat gain performance than in previous years.

Why This Matters

Homeowners can benefit from lower heating and cooling costs.

Builders must ensure products meet current Title 24 requirements.

Energy-efficient windows and doors continue to be one of the most effective upgrades for improving home performance and resale value.

Anderson Moulding Tip: Before purchasing windows or doors for your next project, verify that the products meet current California Energy Code requirements to avoid costly permit delays and redesigns.