Notification Window


31CE - Turning Cold Climate Design Assumptions Upside Down

24 May 2018 2:00 PM - 3:30 PM

This session is available on Friday, May 25, 2018 at 2:00 PM - 3:30 PM.

1.5 ConEd Learning Hours

The Passive House (PH) program brings advanced residential design to the foreground with special attention to the building enclosure focused on lowering heating energy and cost. However, when this same program is applied to multi-unit residences, many of those heating-based rules of thumb are flipped on their heads. Part of this phenomenon is connected to neutralizing the impact of exterior ambient temperature on the building interior. Another part is the weak ability in multi-unit residences to night-flush or control temperatures with cross-ventilation.

Accomplishing cooling in buildings that don’t readily shed heat, and have air flow volumes tightly shaped around ventilation requirements, becomes a challenge. Trade-offs are required that diverge from the Passive House conventions of thermal insulation and thermal-bridge-free construction.

Architects Anthony Leaning and Stephen Pope will walk participants through implementation details of Passive House construction for multi-unit buildings. Participants will learn strategies for preserving the thermal performance of walls using 2D heat flow analysis, and calculating window performance with the Passive House formulas outside the Passive House Planning Package (PHPP). Exploring the impacts of ventilation approaches using the PHPP will also be featured.

Learning Objectives

  1. Know what PH requires for your town.
  2. Avoid overheating in small boxes.
  3. Understand how renewable energy helps avoid excessive electricity use.
  4. Learn PHPP and 2D heat flow analysis: basic strategies to preserve enclosure performance.


Anthony Leaning, OAA, FRAIC, LEED AP BD+C, GGP, and Stephen Pope, OAA, FRAIC, ASHRAE

Anthony Leaning is a founding principal of CSV Architects. He is a multiple-award-winning architect who has been engaged in sustainable design for much of his 30 years of architectural practice, and has a design approach that has long been informed by principles of responsible environmental stewardship, collaborative pursuit of architectural excellence and a commitment to social equity. His professional experience includes affordable housing, public recreation facilities and heritage architecture. His recent work has included one completed and two in-progress buildings designed to the Passive House Standard.

Stephen Pope has a comprehensive understanding of whole building performance arising from his work at Natural Resources Canada. As a researcher in sustainability for buildings, his tasks included operations energy modelling, embodied effects modelling, the development of green building assessment tools and design facilitation for high-performance buildings. Stephen is a vital member of the architectural and sustainability community. As chair of the board of directors at ATHENA, a member of the American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE) Technical Committee and a Fellow of the Royal Architectural Institute of Canada (RAIC), Stephen’s experience is key to the success of this project. 

 This session is sponsored by Dorken.