After your EnerGuide home evaluation

The results of your home evaluation will help you understand and improve the energy performance of your home. Most important is your home’s EnerGuide rating and the label, which you should affix to your home’s electrical panel.

How to interpret your EnerGuide rating

The EnerGuide program is changing its rating system to a new scale that measures energy efficiency in gigajoules (GJ) per year. Natural Resources Canada is working with partners during the transition from the previous 1–100 scale. (This older scale is still used by incentive programs in some provinces and territories.)

Learn more about updates to the EnerGuide rating system

The 1–100 EnerGuide scale

The previous 1–100 EnerGuide scale is used in

  • Quebec
EnerGuide 0-100 Label

EnerGuide Rating: 0-100 Scale

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1 = Address
2= Rating
3= least efficient to most efficient
4 = File Number
5 = Service Organization
6 = Name of Energy Advisor
7 = Date of Energy Report


This rating is a snapshot of your home’s efficiency at the time of the evaluation.

  • A 0 rating represents a house with major air leakage, no insulation and high fuel consumption.
  • A 100 rating represents an airtight, well-insulated house where energy purchased is equal to energy generated through renewable sources: a “net-zero” home.
  • The higher the number, the more efficient the house.
  • An energy-efficient, upgraded older home typically rates between 66 and 74; an energy-efficient new home rates between 81 and 85.
House Characteristics Typical ERS Rating
Existing house not upgraded 0 to 50
Upgraded existing house 51 to 65
Energy-efficient upgraded existing house 66 to 74
New house built to building code standards without energy requirements 70 to 76
New house built to building code standards containing energy requirements 77 to 80
Energy-efficient new house 81 to 85
High-performance, energy-efficient new house 86 to 99
Net zero house (energy purchased and energy generated, through renewable sources, is equal) 100

Reading your EnerGuide evaluation results

Your EnerGuide label and energy efficiency evaluation report show your home rating both as a number and a point on the 1–100 scale. The label shows

  • your home address and file number
  • the date of your evaluation
  • contact information for your energy advisor
  • the version code of the energy efficiency software
  • a checklist of recommended energy efficiency retrofits

If you make the recommended improvements and get a follow-up evaluation, you’ll receive a revised EnerGuide rating, label and report.

The gigajoules-per-year EnerGuide scale

The new GJ-per-year scale is in effect in

  • Yukon
  • Northwest Territories
  • Nunavut
  • Alberta
  • Manitoba
  • Ontario
  • British Columbia
  • Saskatchewan
  • New Brunswick
  • Prince Edward Island
  • Nova Scotia
  • Newfoundland and Labrador
EnerGuide Home Label

EnerGuide Rating: Gigajoules per Year Scale

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Learn more about your home’s energy through the “rating” (you will receive a rating of the homes’s energy consumption in gigajoules); Aim towards “zero” (the lower the number on the new EnerGuide scale, the better the energy performance of your home); Understand how you use “energy” (the label breaks down energy consumed by source); compare your home’s “performance” (the label shows how your homes’ performance compares to a benchmark home); find out where the most energy “consumed” (the label shows proportion of energy consumed by heating, cooling, ventilation, etc); and see your impact on the “environment” (the label shows your home’s Greenhouse Gas Emissions)

Learn how Natural Resources Canada’s EnerGuide makes homes more energy-efficient, more valuable, and more comfortable at


This new rating estimates the net amount of energy your house consumes in a year.

  • A 0 rating represents an airtight, well-insulated house where energy purchased is equal to energy generated through renewable sources: a “net-zero” home.
  • The “typical new house rating”of 146 represents a reference point – a version of your home if it were built to new energy performance standards.
  • The lower the number, the more energy-efficient the home.
How much is 1 gigajoule of energy?

How much is 1 gigajoule of energy?

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The energy used in one of these activities:

Surf the web for 5,500 hours; vacuum your house for 230 hours; run a typical refrigerator for 30 weeks; toast 3,000 bagels; watch an entire national Hockey League Season – all 1,230 games; wash over 100 loads of laundry; The average Canadian household uses 100 gigajoules of energy per year.


Reading your EnerGuide evaluation results

Your EnerGuide rating label and homeowner information sheet show your home’s rating both as a number and as a point on the GJ-per-year scale. It includes

  • information on how the rating is calculated
  • a breakdown of your rated annual energy consumption
  • details about your home’s building envelope and mechanical components
  • tips for improving your home’s energy performance.

Your renovation upgrade report

If applicable, your EnerGuide evaluation will include a renovation upgrade report. This personalized energy action roadmap includes

  • a breakdown of your energy usage
  • before and after charts showing heat loss by building component
  • a list of recommended upgrades and energy-saving results
  • your EnerGuide home rating before and after recommended upgrades
  • customized comments from your energy advisor

Standard operating conditions vs. household operating conditions

During your EnerGuide home evaluation, your energy advisor collects data on your specific household operating conditions to estimate your annual energy consumption and recommend upgrades.

Your EnerGuide rating applies to the house only. NRCan’s energy simulation software uses standard operating conditions – for thermostat temperatures, hot water consumption and number of occupants, among other factors – to compare your home to other homes in your region.

What does my EnerGuide rating mean for my utility bills?

You shouldn’t expect your home’s annual energy use, as reflected on your utility bills, to match your EnerGuide rating or the estimated household energy use reflected in your evaluation.

Your household will have normal fluctuations in energy use – EnerGuide’s energy simulation software doesn’t account for these. Changes in local weather patterns can also significantly affect your consumption and utility bills.

You may also have a pool, hot tub or other significant energy uses in your home that aren’t included in EnerGuide calculations. Your homeowner information sheet lists these under “House details” as atypical energy loads.