Education and Resources

We offer training and technical resources in support of the commercial provisions of the WSEC. Check this webpage periodically for updates.


In response to recommendations by the WA State Department of Public Health regarding the COVID-19 outbreak, we will be offering an all virtual training program in 2021. 


2018 WSEC Commercial Existing Building Alterations Training Series

Webinar series will summarize 2018 Washington State Energy Code (WSEC) commercial requirements for existing building alterations.

     November 18th, 2021 - Mechanical & Service Water Heating System Alterations

      Key topics will include:

  • DOAS and economizer requirements when replacing or adding cooling systems.
  • Like-for-like HVAC and SWH equipment replacement.
  • Projects that include a change of space conditioning, occupancy or space use.



      December 15th, 2021 - Lighting & Electrical System Alterations

      Registration available soon!



Fact Sheets

Commissioning Fact Sheet (PDF 2.6 MB)

Commissioning significantly increases the likelihood that technical details such as system configurations and flow rates, occupancy and temperature settings, and record drawings are correct and complete. Getting these technical details right can have a significant impact on the long-term performance of the building systems. Commissioning requirements in the WSEC elevate the priority for this important step in the construction process. This fact explains the basics of commissioning and when it is required per the WSEC.


Smart Service Water Heating Circulation Pumps Fact Sheet (PDF 2.5 MB)

Service water heating circulation systems are used in commercial buildings to maintain the design supply temperature in the primary piping loop. The WSEC requires this system to have a circulation pump with controls that manage the water temperature in the circulation system and turns off the pump when there is no demand for hot water. This strategy saves energy and reduces water use by minimizing the time required for hot water to reach a fixture.

Smart circulation pumps offer a better than code strategy that simplifies installation and operation with integrated sensors, programmable control logic and ECM motors. This fact sheet provides information about this strategy and links to helpful resources. 

Technical Resources

What is Total System Peformance Ratio (TSPR)?

This resource provides a general overview of the purpose of this new requirement and how this performance ratio is calculated.