Natural Resources Canada
Symbol of the Government of Canada

Office of Energy Efficiency Links


Personal: Residential


How does the EnerGuide Rating Service work?

  1. The builder contacts an EnerGuide Rating System Service Organization to get a list of certified energy advisors in their area.

  2. The builder then works with an energy advisor to enroll and label houses in the program.

  3. The energy advisor undertakes an analysis of the new house plans, noting components that will affect the energy efficiency of the house (i.e. mechanical equipment, windows, building envelope, insulation levels, etc.)

    House blueprint
  4. The energy advisor inputs this information into NRCan's energy simulation software to determine the estimated annual energy usage and EnerGuide Rating for the house as per the plans.

  5. The energy advisor also provides variations of the simulation that include energy efficient upgrades which improve the energy performance of the home. The energy advisor ensures that good Building Science principles are maintained.

  6. The "as per plans" rating and the optional energy efficient upgrades are provided to the builder for costing analysis.

  7. The builder meets with the homeowner to agree on the house specs and energy efficient components that their house will have, and at what cost.

  8. When construction is complete, the builder calls the energy advisor to come back to the house to verify the energy efficient upgrades and performs a blower door test.

  9. After the data has been collected, the homeowner is provided with the evaluation report and official label that shows the EnerGuide rating of the home. This label should then be affixed to the electrical panel.