What’s the story?
A sale sticker is easy to understand. The electricity an appliance will use over the coming years is less obvious. Before buying, put both costs on the same shopping list.
In Canada, EnerGuide labels on covered major appliances show annual electricity consumption in kilowatt-hours, or kWh, and allow comparison with similar models. Lower annual kWh means less electricity consumed under the rating conditions. [1]
In the United States, yellow EnergyGuide labels on covered appliances disclose energy use or efficiency and, for many products, estimated annual operating cost. Their comparison range concerns similar models. [2]
The labels are tools for comparison. They are not personalised quotes for your electricity bill.
Why does it work this way?
First, compare appliances that do the same job at an appropriate size. A compact fridge and a large family model meet different needs. ENERGY STAR's refrigerator guidance recommends choosing an appropriate size and notes that larger refrigerators generally consume more energy. [3]
Next, look at annual kWh, not just a claim such as eco mode or an electrical wattage printed on a specification sheet. Watts measure power at a particular operating condition; kWh measure energy consumed over time. An appliance that cycles on and off cannot be priced accurately by assuming its rated wattage runs continuously.
ENERGY STAR certification is another useful filter for efficiency. It does not replace checking the model's annual consumption, capacity and suitability. Two efficient products can still use different amounts of electricity. [3]
Finally, remember that a U.S. label's dollar estimate uses standard assumptions. Your local electricity price and usage may differ. Compare the underlying consumption as well as the printed cost. [2]
What comes next?
Try this hypothetical refrigerator comparison. These are invented shopping figures, not actual products or a local rate forecast. Both models are assumed to provide the capacity you need.
Model A costs $800 and is rated at 600 kWh per year. Model B costs $1,000 and is rated at 400 kWh per year. At an assumed electricity cost of $0.20 per kWh, their estimated annual electricity costs are $120 and $80.
Calculation: annual kWh × dollars per kWh = estimated annual electricity cost.
Model B saves $40 per year on electricity in this example. Its $200 higher purchase price takes five years to recover through those savings alone. Over ten years, purchase plus electricity totals $2,000 for A and $1,800 for B.
This simplified calculation assumes unchanged prices and consumption. It excludes financing, repairs, installation, water use and resale value. Use either Canadian or U.S. dollars consistently. For your own estimate, use the applicable charges that vary with electricity consumption; a fixed monthly account charge normally remains even if the appliance uses less.
Why should you care?
Before you buy, use this checklist:
1. Confirm the capacity, dimensions and installation requirements you actually need.
2. Photograph the exact model number and energy label for each finalist.
3. Compare annual kWh among suitable models, then estimate running costs using your own rate.
4. Add delivery, installation, necessary accessories and old-appliance removal to the purchase price.
5. Compare warranty coverage, service availability and any rebate's eligibility before counting it as a saving.
6. Ask whether the extra purchase cost is justified by the savings over the time you expect to use it.
Petro.UNO's advice: do not replace a working appliance solely because another model has a lower energy number without doing the arithmetic. Buying something new has an immediate cost too.
A useful shopping habit is to record two prices: what it costs to take home, and what it could cost to run. The best choice is the appliance that meets your needs at a sensible total cost—not necessarily the cheapest sticker or the fanciest efficiency claim.