CSA C813.1-14 (2019) – Standard Test Method for Measuring Energy Consumption of Household Appliances

Scope and Application

CSA C813.1-14 (2019) outlines standardized test methods for measuring the electrical energy consumption of mains-powered household appliances in both active and low-power modes (standby/off). It applies to products with a rated voltage not exceeding 250 V for single-phase and 480 V for three-phase systems. The standard is designed to deliver repeatable, reproducible results that support energy efficiency labeling programs (e.g., Energuide) and regulatory compliance under Canada’s Energy Efficiency Act. It harmonizes with international practice through its alignment with IEC 62301:2011, incorporating Canadian deviations for voltage, frequency, and ambient conditions.

Technical Requirements

Test Equipment

Power measurement instruments must meet strict accuracy classes. The table below summarizes key equipment requirements:

Parameter	Requirement
Voltage accuracy	±0.5% of reading
Current accuracy	±0.5% of reading
Active power accuracy (integration method)	±1.0% for energy, ±0.5% for power
Power factor range	0.1 to 1.0
Crest factor (current)	≥ 3.0
Frequency measurement uncertainty	±0.1% of nominal

Watt-hour meters must use the integration method over a minimum of 60 seconds, with a resolution of at least 0.01 Wh. For power levels below 10 W, a power analyzer with a lower measurement range and higher accuracy is recommended.

Test Conditions

The standard mandates controlled environmental and supply conditions:

Ambient temperature: 23 °C ± 2 °C
Relative humidity: 20 % to 80 %, non-condensing
Supply voltage: 120 V (nominal) within ±0.5 % for single-phase North American products; 230 V for European-style appliances
Frequency: 60 Hz ± 0.3 Hz (Canada) or 50 Hz ± 0.3 Hz as applicable
Total harmonic distortion (THD) of supply: ≤ 3 %

Tip: For standby power measurements, ensure the appliance reaches thermal and electrical stabilization (typically 15–30 minutes) before recording data. Use the integration method over at least 60 seconds to capture intermittent loads.

Measurement Procedure

The test sequence covers three operating states: active mode (on), standby mode (low-power), and off mode (disconnected from function but still connected to mains). Each state is measured for at least 60 seconds, and the average power is recorded. The standard also provides guidance on handling products with cyclic behavior (e.g., refrigerators) by specifying that the measurement period must cover an integer number of complete cycles.

Implementation and Compliance

Laboratory Accreditation

Testing to CSA C813.1-14 is typically performed by laboratories accredited to ISO/IEC 17025. Accreditation ensures that the lab’s quality management system, equipment calibration, and personnel competence meet international benchmarks. The accreditation scope must specifically include this standard.

Warning: Using non-calibrated equipment or failing to document the stabilization period may invalidate the test results. Always verify that the power analyzer is set to the correct measurement mode (RMS for voltage, true power) and that the crest factor rating covers expected current peaks.

Compliance Note: Products tested under CSA C813.1-14 are eligible for inclusion in the Energuide database and for certification marks such as CSA Energy Efficiency Verification. Many provincial regulations accept these test reports directly.

Non-Compliance Risk: A laboratory that deviates from the defined test conditions—such as using an unregulated voltage source or incorrect ambient temperature—risks producing non-representative results. This may lead to product mislabeling and penalties under the Energy Efficiency Act, including fines or removal from market.

Documentation and Reporting

The final test report must include:

Identification of the tested product (model, serial number, ratings)
Test equipment list with calibration dates
Environmental and supply conditions recorded during testing
Measured power (W) and energy (Wh) for each mode
Any deviations from the standard and their justification
Signature of the responsible test engineer and date

Integration with Regulatory Programs

Natural Resources Canada (NRCan) references CSA C813.1-14 in its energy efficiency regulations for a variety of products, including refrigerators, clothes washers, dishwashers, and room air conditioners. Manufacturers must ensure that their testing procedures conform to the latest edition of the standard (2019) to align with current regulatory requirements.

Frequently Asked Questions

Q: Is CSA C813.1-14 (2019) identical to IEC 62301?
A: The Canadian standard is technically equivalent to IEC 62301:2011, with national deviations for nominal voltage (120 V/60 Hz) and ambient temperature (23 °C instead of 25 °C). These adjustments ensure that the test reflects typical Canadian household conditions.

Q: Which appliance categories are covered by this standard?
A: It covers all mains-powered household appliances and similar equipment intended for residential use—including kitchen appliances, laundry equipment, HVAC controls, and electronic devices—that can be operated in standby or off modes. Products rated above 250 V single-phase or 480 V three-phase are excluded.

Q: How often must a product be retested?
A: The standard itself does not prescribe retesting frequency. However, regulatory programs usually require retesting when there is a significant design change that could affect energy consumption. Periodic testing every 2–5 years is a common industry practice to maintain certification.

Q: Can manufacturers self-declare compliance?
A: Self-declaration is possible but not recommended for regulatory acceptance. Most Canadian energy efficiency programs require testing by an ISO/IEC 17025 accredited laboratory to ensure credibility and traceability. Third-party verification also protects the manufacturer from liability.

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