Washington State Residential Energy Code Calculator

Welcome to the WSU Energy Code Compliance Tool

This application helps homeowners, builders, and building officials determine whether residential construction projects meet the requirements of the Washington State Energy Code - Residential (WSEC-R 2021).

The tool provides an efficient way to evaluate building envelope components, mechanical systems, and overall energy performance to ensure compliance with current state regulations.

Key Features

• Calculate compliance for new residential construction
• Evaluate building envelope requirements
• Assess mechanical system specifications
• Generate compliance documentation
• Save and manage multiple projects