Event Details

Key Points:

  • Illustrate the impact of windows on the heat loss performance of a wall.
  • The use of the Passive House Planning Package (PHPP) design tool to better understand the window specification in building an energy model of the building before construction takes place.
  • Results of a comparison between windows at different sizes & frame types.
  • Minimum surface temperature and fRsi are critical measures of frame performance.


A look at the impact of different window frame materials and glass performance on the heat loss performance of a wall. The PHPP accurately accounts for the window frame, glass and installation of every window to understand at the design stage just what heat loss impact this might have. Having a window frame fRsi calculation ensures that the window will remain free of condensation. Furthermore, analysis of this level of window data allows designers to understand better the performance and value of different window frame specification in a building.

Join us for a 1-hour session where Tom Hughes discusses the importance of window selection in the design of your home.

  • Date: 19th June 2024
  • Time 12:30pm - 1:30pm (AEST)


  • Tom Hughes (Architect / Director / Certified Passive House Designer / GSAP / Educator of Build Balanced)

    Tom Hughes

    Architect / Director / Certified Passive House Designer / GSAP / Educator of Build Balanced

    Tom is a career Physiotherapist who has been privileged in working to help people at an individual level to then studying Building Design and Passivhaus to work to help many more at a societal level. Better buildings for the health of the people who use them and to decarbonise the construction and operation of buildings for the health of the planet is his motivation.

    Tom is a Certified Passive House Consultant, Building Designer and Physiotherapist who has been immersed in the world of building science for the last three years. He is particularly fascinated by the way in which windows impact the performance and experience of a building. Tom grew up near to Canberra and has now returned with his family after 14 years on the far south coast, he is determined to see more Passivhaus projects in Canberra.

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