An energy code is a set of regulations that establish minimum energy efficiency requirements for buildings and construction systems.

An energy code is a building regulation that sets minimum standards for energy efficiency in new construction and major renovations. It governs how buildings are designed and built to reduce energy consumption for heating, cooling, lighting, and other systems while maintaining occupant comfort and safety.

In construction, energy codes address components such as insulation levels, window performance, air sealing, HVAC efficiency, lighting controls, and renewable energy readiness. Commonly adopted energy codes include the International Energy Conservation Code (IECC) and ASHRAE standards, which are enforced by local authorities having jurisdiction.

Compliance with energy codes is a critical part of the permitting and inspection process. Builders, designers, and contractors must demonstrate compliance through documentation, testing, or inspections. Meeting or exceeding energy code requirements helps reduce operating costs, improve building performance, and support sustainability goals.

Energy codes are updated regularly, and newer versions can reduce building energy use by 30% or more compared to older standards.

• Energy Audit
• ICC (International Code Council)
• NEC (National Electrical Code)