Washington State Residential Energy Code Calculator
This is a DEVELOPMENT/TESTING environment. Please access the live WA State Residential Energy Code Calculator for your official projects. This site will be unavailable after 9/21/2026. Thanks for helping us test and prepare to go live!
Need Assistance?
For questions about energy code compliance or this tool email:
ep.energycode@wsu.edu
For assistance with your account email:
ep.support@wsu.edu
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
Keeping the Lights On (and the Codes Compliant!)
Love the WSECR Tool? Saved time using our code resources? Found an answer that kept your project moving?
Considering donating to the Energy Program to help our team continue to make energy code compliance easier, clearer, and more accessible for everyone. Your donation helps us improve the WSECR tool, create new educational resources, and provide valuable code support to the community.
