We are the official NABCEP PVA training partner of the

2022 NABCEP CE Conference!

Multifamily Central Ventilation: A Tale of Two Cities - Self Study


Authors: Thomas Holmes, Doug Kumph, John Twomey

Subjects: Green Building: Building Science, Green Building: Building Science, Green Building: Ventilation IAQ

28 students are interested in this course


This course was originally presented at BuildingEnergy Boston 2020, a conference presented by the Northeast Sustainable Energy Association (NESEA)

Central ventilation systems in multifamily buildings are a vital building system with significant implications for energy, sustainability and occupant health and safety. In this session, we compare and contrast the building stock in Boston and NYC and explore a variety of techniques for restoring and improving these systems. We consider how to evaluate candidates and how to structure the project from commissioning back through design to achieve results based on optimizing energy savings, complying with finance-related and building owner requirements, and how to get these things to just plain work. We build on lessons learned from 10 years’ experience and offer practical recommendations for designing and constructing both new and retrofit systems.

Professional credits (or CEUs, "continuing education units") are not available at this time; check back later for options to earn credits.

Learning Objectives

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Flexible Online Training for Industry Professionals

This is a self-study, self-paced online course. You can begin instantly upon enrollment and complete the course materials at your own pace.

Access Information and Build Your Training Library

After enrolling, the course materials will remain in your account and be accessible 12 months (1 year) after enrollment. Access can be extended beyond 1 year with a monthly membership. Rewatch videos and review assignments as many times as you want. View updates the instructor makes to the course as the industry advances. Return to your course anytime with online access from anywhere in the world.

Certificates of Completion Available for Members Only

Certificates of completion are only provided to HeatSpring Membership subscribers. This course has not been approved by any credentialing organizations (NABCEP, AIA, USGBC etc) for Continuing Education Credits (CEUs). This course is for self education purposes only and completion does not indicate a level of professional expertise or credential.


Thomas Holmes

Senior Project Manager, Aspen Environmental Services, LLC

Tom is Senior Project Manager with Aspen Environmental Services in Methuen, MA. He specializes in ventilation related building performance work, including turnkey retrofits of multifamily central ventilation systems. Before coming to the Greater Boston area in 2015, Tom worked extensively in the NYC market implementing ventilation retrofits and as a Senior Energy...[more]

Doug Kumph

Senior Manager, Operations, Petersen Engineering

Doug Kumph is a senior manager at Petersen Engineering, Inc. Doug worked as an industrial hygienist and chemical engineer before starting his career in the MEP/FP industry at Petersen Engineering from 1999-2006. Prior to rejoining Petersen Engineering (2018), he was the Director of Operations for Cornerstone Commissioning, Director of Operations for Air Solutions and...[more]

John Twomey

CEO/Co-Founder, IAQ Champs

John is the Founder & CEO of Indoor Air Quality (IAQ) Champs. Serving NYC’s mid to high-rise multi-family building stock with holistic performance-based ventilation retrofits, IAQ Champs continues to implement new technology and methods to restore exhaust/supply shafts. We love any and all ventilation problems and have made it our mission to provide healthy IAQ for as...[more]

Course Outline

Multifamily Central Ventilation: A Tale of Two Cities

  • Multifamily Central Ventilation: A Tale of Two Cities (Video - 01:24:42 hours)
  • Presentation Materials (Download .pdf)
  • OPTIONAL: Subscribe to NESEA Communications (Resource)

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