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Courses/Engineering/Technology & Science

Low-E, High Heat: Window Models vs Real Performance

Uncover the discrepancy between manufacturer energy models and real-world thermal behavior to confidently select Low-E glazing that actually performs in high-heat conditions.

Created byAdrian Edge
BeginnerUpdated Jun 17, 2026
Low-E, High Heat: Window Models vs Real Performance

What You'll Learn

check_circleExplain what CSA A440.2 whole-window ratings (U-factor, SHGC, VT, and Energy Rating) do—and do not—represent for a specific project.
check_circleTranslate Canadian energy code drivers (NECB and NBCC-based provincial requirements) into realistic fenestration performance targets by climate zone and facade orientation.
check_circleIdentify the main sources of model-to-reality divergence, including installation quality, interface thermal bridging, air leakage, shading and operation, and moisture effects.
check_circleChoose an appropriate modeling approach (from simplified U/SHGC inputs to detailed frame, spacer, and window-wall interface analysis) and apply appropriate sensitivity checks.
check_circleDefine practical verification steps (submittal review, mock-ups, airtightness and thermal imaging testing, and commissioning) that reduce risk and support engineering sign-off.

About This Course

Building performance modelling does not always reflect real-world occupant experience. As buildings become more airtight, highly insulated and energy efficient, design decisions around glazing, solar control, ventilation and cooling strategies can create unintended performance issues if they are not assessed in the context of actual climate conditions and building use. For architects and engineers, understanding the relationship between modelling assumptions and operational outcomes is critical to delivering buildings that are both energy efficient and comfortable.

This course examines the gap between theoretical window performance modelling and real-world building behaviour through the lens of overheating risk in high-performance buildings. Using a passive house townhouse development in Vancouver as a case study, the session explores how value engineering decisions, glazing selection, solar heat gain assumptions and changing climate conditions can influence indoor comfort, occupant health and long-term building performance. Participants will explore practical approaches for evaluating solar control strategies, improving design decisions and balancing energy performance with resilience and occupant wellbeing.

Key Topics Discussed:

  • Solar heat gain modeling and standard-sized vs. custom-sized window performance
  • The "free energy" misconception in energy modeling for airtight buildings
  • Case study of a Vancouver townhouse complex and the impact of value engineering
  • The overheating crisis in Canada, outdated climate data, and health and safety risks
  • Regulatory changes and indoor temperature limits in building codes
  • Cost-effectiveness of upgrading low-E coatings to prevent heat buildup
  • Market adoption barriers for European-style exterior blinds in North America
  • The limitations of AI in regional energy and code compliance modeling
  • The development of size-specific calculators and regional climate-zone standards

Your Instructor

Adrian Edge
Adrian Edge

Director, Codes & Regulatory Affairs | Fenestration Canada

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Adrian Edge is a building products and regulatory affairs professional with a diverse background spanning fenestration, construction project management, and commercial sales. He currently serves as Director of Codes and Regulatory Affairs at Fenestration Canada, where he focuses on advancing industry standards, navigating regulatory frameworks, and supporting compliance initiatives across the Canadian window and door sector. Prior to this role, Adrian held multiple positions at Innotech Windows + Doors, progressing from Product Representative to Project Manager and ultimately Commercial Sales Manager. In these roles, he developed deep expertise in product applications, project delivery, and client engagement, while bridging technical requirements with commercial outcomes. His earlier experience as Project Director at Starline Windows saw him lead the establishment of a vinyl installation division, including building processes, assessing market viability, and scaling operations. Adrian’s career began in business development and operations, including a key role at Amavida Coffee and Tea, where he helped expand the company from a local operation toward national growth, doubling wholesale revenue and implementing structured sales strategies and systems. His early career also includes experience in operations management, financial analysis, and administrative coordination, providing him with a well-rounded foundation in business and organizational development. With a strong blend of technical knowledge, regulatory insight, and commercial acumen, Adrian brings a practical, solutions-focused approach to advancing industry standards and supporting sustainable growth within the building products sector.

Credit Information

Do these courses count toward my professional development requirements?

This portal is provided as a training and development resource for City of Markham employees. Every course is delivered by a qualified subject matter expert or learning organization, is quantifiable in hours, and is verifiable — you receive a documented certificate of completion for every course you finish, stored on LearnFormula indefinitely.

If you hold a professional designation (for example in engineering, accounting, human resources, or law), courses may be counted as professionally relevant, verifiable learning activities toward your continuing professional development. Individual practitioners are responsible for confirming that an activity meets the requirements of their professional body. For questions about the City of Markham's training and development policies, please speak with your people leader or Human Resources.

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We are a registered provider with 327+ associations and regulatory bodies worldwide. We operate across 29 global markets including Canada, the US, Australia, and the UK. Every course page clearly displays its specific accreditations. Upon completion, you receive a professional certificate that can be validated online. Our certificates include all necessary accreditation details, credit hours, and completion dates, and are formatted specifically to meet the submission requirements of most global regulatory bodies.