HVAC for Retrofits (Galen Staengl)

4 Hour Afternoon Workshop • 1:00 PM – 5:00 PM • Wednesday, Oct. 17


This workshop will explore how multifamily Passive House projects can leverage the building envelope in order to deliver comfort and indoor air quality at minimal system cost. Engineer Galen Staengl will dive into examples of multifamily building retrofits and Passive House HVAC opportunities and challenges discovered along the way. He will share the Dutch Energiesprong approach, which provides a pathway to "retrofits-in-place" that perform at or near Passive House standards. He will explore how we can use equipment available in the US to emulate this approach and provide proof of concept for cost-effective deep energy retrofits at scale.


Galen Staengl has 20 years of experience designing cutting-edge energy-efficient mechanical systems for green building projects and industrial facilities. Throughout his career, Galen has worked to bring energy-efficient and sustainable principles into his designs for award-winning schools, institutional buildings, multi-family residential projects, and office buildings. As President of Staengl Engineering, Galen has provided design and energy analysis for buildings certified as LEED Platinum and Gold, Passive House, Net Zero energy, Net Positive energy, and Living Building Challenge.

As a leader in low-energy building system design, Galen regularly presents and moderates at national and regional green building conferences. He is also involved in advancing the technical and regulatory aspects of green building design in the U.S.; he is currently a member of the national Technical Committee of Passive House Institute U.S. and is working with the Green Focus Group to assist the Virginia Housing Development Agency propose sustainable design guidelines for future developments.