Weatherization

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  • Webinar – Building Science Principles

    Building Performance Center 3406 Redwood Ave., Bellingham, WA

    ONLINE Building Science Principles (D956)   CEUs: 6.5 IMPORTANT: This course is NOT the prerequisite to taking BPI’s Building Analyst Technician (BA-T) Field Exam. If interested in the prerequisite (BPI Building Science Principles (BSP) […]

    $280

  • Webinar – Maximizing Performance with Unvented Attics

    Maximizing Performance with Unvented Attics | January 27, 2026 8:30 AM to 11:00 AM MST | 6:00 PM to 8:30 PM MST Learn actionable insights into insulation options, design strategies, energy code requirements, […]

    $70

  • Bozeman, MT – Healthy Housing Principles

    Healthy Housing Principles April 27 – 29, 2026 751 Osterman Dr, Bozeman, MT 59715, USA notes Course Description This in-person course is centered around the BPI Healthy Housing Principles certificate. […]

    $575