*According to the standards for Net Zero Ready as adopted by the Canadian Home Builders’ Association. 

†Compared to a minimum Ontario Building Code home. 

‡The above projections are the result of modelling exercises by a third-party engineering consultant comparing a CHBA Net Zero Ready home heated and cooled primarily by an air source heat pump and supplemented by a natural gas furnace, to a minimum Ontario Building Code home using a typical natural gas furnace and electric air conditioning operating under similar conditions.