Life-cycle analysis of improvements to an existing energy-efficient house in montreal

This paper evaluates several design alternatives, applied to an existing energy-efficient house, that have been developed using both parametric and non-parametric approaches. The performance of the selected alternatives has been evaluated using the multi-attribute life-cycle analysis, with three objective functions: (1) the total energy consumption, including the embodied energy and operating energy; (2) the life-cycle cost, including the initial and energy operating costs and (3) the environmental impacts, calculated in terms of equivalent CO₂ emissions. Results show that the energy performance of this existing energy-efficient house can still be improved.