An analysis of deep energy retrofit strategies in the existing Canadian residential market

This paper presents a techno-economic analysis of deep energy retrofit strategies aimed at improving a typical existing home to a Net Zero Ready (NZR) level. Three distinct pathways are selected to examine the impact of modifying the mechanical system and building envelope. Each pathway is analyzed in TRNSYS for both the Montreal and Vancouver regions using a validated housing model. A techno-economic analysis methodology then combines the calculated annual energy costs with the associated material and labour costs for each option. Results show that high performance heat pump systems are the preferred option in both cities, highlighting the potential of these technologies in reducing residential energy use in Canada.