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This paper investigates the potential benefits of deep retrofit scenarios on the energy consumption of houses in Waterloo Region. The building envelop is the primary focus, especially upgrading wall, attic, and foundation insulation. The sample houses are divided into six categories based on their construction date. A deep retrofit upgrade scenario is applied to a typical house of each category and the potential energy savings and CO2 emissions reduction of each typical house are estimated after completing the corresponding retrofit scenario. One of the six retrofitted houses achieves the Passive House energy intensity standard. Finally, the total potential savings for Waterloo Region are obtained based on the Regional housing census. According to the above analysis, it can be concluded that applying deep retrofit scenarios to in the residential sector of Waterloo Region can make significant contributions to reducing 14.16×10 9 MJ/yr energy consumption and 7.83×10 8 kg/yr CO2 emissions.

Estimating Benefits of Deep Retrofit Scenarios Based on Passivhaus Standards in the Residential Sector of Waterloo Region