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  • Beyond the Blower Door: Demystifying Whole Building Airtightness Testing for Massachusetts Multifamily

    Join RDH Building Science’s David Stanton (Senior Engineer) and John Mann (CPHC, Phius Verifier, HERS Rater) as they present the essentials of airtightness testing—what it is, why it matters, and how to succeed.  Massachusetts’ updated energy code and passive building verification requirements mandate whole building airtightness testing. For multifamily projects, these tests can prove complex. […]

  • Annual Passive House Symposium

    Artists for Humanity EpiCenter 100 W 2nd Street, South Boston, MA, United States

    The Annual Passive House Symposium is the premier Massachusetts event focused on the world’s leading high-performance building standard. It brings together people from across the industry—developers, architects, consultants, engineers, builders, […]

  • Winthrop Center: Next Generation Passive House Office Tower

    BSA Space 290 Congress St Suite 200, Boston, MA, United States

    Register Here Join PHMass on Tuesday, January 13th from 5:30–7:30 PM for a free evening of learning, networking, and great conversation! Did you know that the tallest building in Boston’s […]

  • Virtual Focus Group: Stretch and Specialized Codes

    The Department of Energy Resources (DOER) is seeking input about user experience navigating the stretch and specialized stretch codes. They would like to hear about any challenges code users are experiencing and any suggested improvements that could be made. There will be a brief framing presentation from DOER followed by a discussion of code user […]

  • Electrification of Domestic Hot Water is a Tough Nut to Crack

    BSA Space 290 Congress St Suite 200, Boston, MA, United States

    Electrifying domestic hot water (DHW) in multifamily buildings is a tough nut to crack—and one of the most critical challenges on the path to low- and zero-carbon buildings. Join James Petersen, P.E., Founder & Principal at Petersen Engineering and President of the PHMass Board to explore the current landscape of electric DHW solutions for large […]

  • PHN Conference Call for Papers

    The Passive House Network is now accepting submissions for their 2026 Conference. Learn more details about submission here.

  • Affordable Infill at Scale

    BSA Space 290 Congress St Suite 200, Boston, MA, United States

    High-performance sustainable design is entirely doable on an affordable budget, and the team behind the Norwell Street infill project in Dorchester—developed as part of the City’s Welcome Home Boston initiative—is […]

  • Reimagine Buildings: Multifamily

    From Passive House Accelerator: Reimagine Buildings: Multifamily brings together the practitioners, owners, and researchers pushing comfortable, resilient, climate-ready housing from vision to reality. This is not a hypothetical conversation—it’s grounded […]

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  • Project Tour: Winthrop Center

    Winthrop Center 115 Federal St, Boston, MA, United States

    Following up on our last Monthly Meeting, PHMass and Millenium Partners will be offering a tour of their ground-breaking Winthrop Center project, currently the largest Passive House office building in […]

  • MassEnergize Community Climate Leaders Conference

    “Join climate leaders from across Massachusetts at the MassEnergize Community Climate Leaders Conference on April 8, 2026 at Bentley University. The day features plenary speakers Senator Mike Barrett, DOER Commissioner […]

  • Measuring Residential Ventilation Air Flows

    BSA Space 290 Congress St Suite 200, Boston, MA, United States

    ⚡⚡ This is a hybrid in-person and virtual event ⚡⚡ Airtight construction is a hallmark of high performance construction, but requires a comprehensive ventilation system as the foundation of good indoor air […]

  • Ventilation Summit

    BSA Space 290 Congress St Suite 200, Boston, MA, United States

    Every passive building depends on continuous, balanced ventilation. It’s a critical part of all Passive House standards. But designing, installing, and balancing these systems can present challenges, especially in larger multifamily buildings with complex needs. This workshop is intended to bring together stakeholders from across the Passive House Massachusetts community to have a frank, technical, […]

  • Power Perspectives: From Grid to Building

    Building Evolution Corporatio 138 Green Street, Suite 203, Worcester, United States

    Join BEC’s two-part discussion on the future of electrical infrastructure and energy demand—strategies, challenges & opportunities.

  • Western Mass Passive House Forum

    The Roosevelt Room at Union Station 125A Pleasant St, Northampton, MA, United States

    ⚡⚡ This is a free, in-person event in Northampton, MA ⚡⚡ Register Here Join Passive House Massachusetts for an afternoon of professional learning and community connection. This forum is designed […]