The National Energy Code of Canada for Buildings (NECB) sets out technical requirements for the energy efficient design and construction of new buildings. It is published by National Research Council (NRC) and developed by the Canadian Commission on Building and Fire Codes in collaboration with Natural Resources Canada (NRCan).
The NECB has three main versions 2011, 2015 and 2017. The 2015 edition broadens the scope to address all service water and introduces requirements for pressure-sensing controls which reduce the short-cycling of booster pumps when the demand for water is low. Overall there are 90 changes to improve energy performance of buildings included in 2015 version when compared to 2011 version.
The 2017 edition is an important step toward Canada’s goal for new buildings, as presented in the Pan-Canadian Framework, of achieving ‘Net Zero Energy Ready (NZER)’ buildings by 2030. The NECB 2017 supports this goal by reducing the overall thermal transmittance of roofs, fenestration and doors; reducing losses through thermal bridging in building assemblies; and, reducing the allowable percentage of skylight area. This new edition also introduces more stringent requirements for energy recovery systems and interior and exterior lighting requirements.
The platform supports all of these NECB versions i.e 2011, 2015 and 2017. It also takes care of selecting default version of NECB accepted by different states in Canada when you input the location of the project.
Learn more about NECB here: