
Andrew Flanagan
PE, LEED AP, GPD
Principal, Senior Plumbing Engineer
Andrew is a senior mechanical engineer with a focus on hydronic and plumbing system design. Drawing from his 12 years of experience, he delivers engineering solutions to create sustainable and efficient facilities, reducing dependence on natural resources. Andrew earned his Green Plumbing Designer certification through the American Society of Plumbing Engineers and serves as the Portland Chapter President.
Projects
News & Awards

On the Path to Leadership
Interface Engineering strives to create optimal environments for every space we design. To accomplish this, we have built a leadership team of high-performing individuals who have…
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Interface Milestone
Congratulations to Associate Principal Andrew Flannagan on his 5 year anniversary at Interface! Principal Adam Carlson shares: Andrew, Congratulations on reaching the 5 year…
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World Plumbing Day 2020
World Plumbing Day, initiated by the World Plumbing Council, highlights the essential role of plumbing in the health, safety and sustainability of our community. Members of our…
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On the Path to Leadership 2019
Interface Engineering strives to create optimal environments for every space we design. To accomplish this, we have built a leadership team of high-performing individuals who have…
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